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Teufelsbauer M, Stickler S, Eggerstorfer MT, Hammond DC, Hamilton G. BET-directed PROTACs in triple negative breast cancer cell lines MDA-MB-231 and MDA-MB-436. Breast Cancer Res Treat 2024:10.1007/s10549-024-07403-w. [PMID: 38896334 DOI: 10.1007/s10549-024-07403-w] [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: 05/17/2024] [Accepted: 06/09/2024] [Indexed: 06/21/2024]
Abstract
PURPOSE This study aims to find whether the proliferation and migration of triple negative breast cancer (TNBC) cell lines can be reduced by treatment with bromodomain and extra-terminal domain (BET) inhibitor JQ1 and BET protein targeting chimeras (PROTACs) ARV-771 and MZ1. METHODS Cytotoxicity tests, scratch migration assays and western blot proteome profiler arrays for protein expression of cancer-related proteins were used to evaluate the impact of a BET-inhibitor and two BET-directed PROTACs on cell viability, migration and on protein expression. RESULTS JQ1 and the PROTACs MZ1 and ARV-771 significantly inhibited the growth and migration of the KRAS G13D-mutated MDA-MB-231 cells. In this cell line, the PROTACs suppressed the residual expression of ERBB2/HER2, 3 and 4 that are essential for the proliferation of breast cancer cells and this cell line proved sensitive to HER2 inhibitors. In contrast, the effects of the PROTACs on the protein expression of MDA-MB-436 cells mostly affected cytokines and their cognate receptors. CONCLUSION The degradation of BET-protein by PROTACs demonstrated significant anti-proliferative effects. The KRAS-mutated MDA-MB-231 cells belong to the low-HER2 expressing tumors that have a poorer prognosis compared to HER2-null patients. Since first oral PROTACs against tumor hormone receptors are in clinical trials, this mode of tumor therapy is expected to become an important therapeutic strategy in the future treatment of TNBC.
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Affiliation(s)
- Maryana Teufelsbauer
- Clinics of Plastic and Reconstructive Surgery, Medical University of Vienna, Vienna, Austria
| | - Sandra Stickler
- Institute of Pharmacology, Medical University of Vienna, Vienna, Austria
| | | | | | - Gerhard Hamilton
- Institute of Pharmacology, Medical University of Vienna, Vienna, Austria.
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2
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Shah MA, Altorki N, Patel P, Harrison S, Bass A, Abrams JA. Improving outcomes in patients with oesophageal cancer. Nat Rev Clin Oncol 2023; 20:390-407. [PMID: 37085570 DOI: 10.1038/s41571-023-00757-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2023] [Indexed: 04/23/2023]
Abstract
The care of patients with oesophageal cancer or of individuals who have an elevated risk of oesophageal cancer has changed dramatically. The epidemiology of squamous cell and adenocarcinoma of the oesophagus has diverged over the past several decades, with a marked increase in incidence only for oesophageal adenocarcinoma. Only in the past decade, however, have molecular features that distinguish these two forms of the disease been identified. This advance has the potential to improve screening for oesophageal cancers through the development of novel minimally invasive diagnostic technologies predicated on cancer-specific genomic or epigenetic alterations. Surgical techniques have also evolved towards less invasive approaches associated with less morbidity, without compromising oncological outcomes. With improvements in multidisciplinary care, advances in radiotherapy and new tools to detect minimal residual disease, certain patients may no longer even require surgical tumour resection. However, perhaps the most anticipated advance in the treatment of patients with oesophageal cancer is the advent of immune-checkpoint inhibitors, which harness and enhance the host immune response against cancer. In this Review, we discuss all these advances in the management of oesophageal cancer, representing only the beginning of a transformation in our quest to improve patient outcomes.
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Affiliation(s)
- Manish A Shah
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA.
| | - Nasser Altorki
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Pretish Patel
- Department of Radiation Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Sebron Harrison
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Adam Bass
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Julian A Abrams
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
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3
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Spanov B, Olaleye O, Mesurado T, Govorukhina N, Jungbauer A, van de Merbel NC, Lingg N, Bischoff R. Pertuzumab Charge Variant Analysis and Complementarity-Determining Region Stability Assessment to Deamidation. Anal Chem 2023; 95:3951-3958. [PMID: 36795375 PMCID: PMC9979147 DOI: 10.1021/acs.analchem.2c03275] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Pertuzumab is a monoclonal antibody used for the treatment of HER2-positive breast cancer in combination with trastuzumab. Charge variants of trastuzumab have been extensively described in the literature; however, little is known about the charge heterogeneity of pertuzumab. Here, changes in the ion-exchange profile of pertuzumab were evaluated by pH gradient cation-exchange chromatography after stressing it for up to 3 weeks at physiological and elevated pH and 37 °C. Isolated charge variants arising under stress conditions were characterized by peptide mapping. The results of peptide mapping showed that deamidation in the Fc domain and N-terminal pyroglutamate formation in the heavy chain are the main contributors to charge heterogeneity. The heavy chain CDR2, which is the only CDR containing asparagine residues, was quite resistant to deamidation under stress conditions according to peptide mapping results. Using surface plasmon resonance, it was shown that the affinity of pertuzumab for the HER2 target receptor does not change under stress conditions. Peptide mapping analysis of clinical samples showed an average of 2-3% deamidation in the heavy chain CDR2, 20-25% deamidation in the Fc domain, and 10-15% N-terminal pyroglutamate formation in the heavy chain. These findings suggest that in vitro stress studies are able to predict in vivo modifications.
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Affiliation(s)
- Baubek Spanov
- Department
of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, A Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Oladapo Olaleye
- Department
of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, A Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Tomés Mesurado
- Department
of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences,
Vienna, Muthgasse 18, Vienna 1190, Austria
| | - Natalia Govorukhina
- Department
of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, A Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Alois Jungbauer
- Department
of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences,
Vienna, Muthgasse 18, Vienna 1190, Austria
| | - Nico C. van de Merbel
- Department
of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, A Deusinglaan 1, 9713 AV Groningen, The Netherlands,Bioanalytical
Laboratory, ICON, Amerikaweg 18, 9407 TK Assen, The Netherlands
| | - Nico Lingg
- Department
of Biotechnology, Institute of Bioprocess Science and Engineering, University of Natural Resources and Life Sciences,
Vienna, Muthgasse 18, Vienna 1190, Austria
| | - Rainer Bischoff
- Department
of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, A Deusinglaan 1, 9713 AV Groningen, The Netherlands,
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4
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Fu Z, Lin Z, Yang M, Li C. Cardiac Toxicity From Adjuvant Targeting Treatment for Breast Cancer Post-Surgery. Front Oncol 2022; 12:706861. [PMID: 35402243 PMCID: PMC8988147 DOI: 10.3389/fonc.2022.706861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 02/24/2022] [Indexed: 12/14/2022] Open
Abstract
Breast cancer is one of the most prevalent types of cancers worldwide, especially for females. Surgery is the preferred treatment for breast cancer, and various postoperative adjuvant therapies can be reasonably used according to different pathological characteristics, especially traditional radiotherapy, chemotherapy, and endocrine therapy. In recent years, targeting agent therapy has also become one of the selective breast cancer treatment strategies, including anti-HER-2 drugs, CDK4/6 inhibitor, poly ADP-ribose polymerase inhibitor, PI3K/AKT/mTOR pathway inhibitor, ER targeting drugs, and aromatase inhibitor. Because of the different pathologic mechanisms of these adjuvant therapies, each of the strategies may cause cardiotoxicity in clinic. The cardiac adverse events of traditional endocrine therapy, radiotherapy, and chemotherapy for breast cancer have been widely detected in clinic; however, the targeting therapy agents have been paid more attention with the extension of application. This review will summarize the cardiac toxicity of various adjuvant therapies for breast cancer, especially for targeting drug therapy.
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Affiliation(s)
- Zhenkun Fu
- Department of Immunology & Wu Lien-Teh Institute & Heilongjiang Provincial Key Laboratory for Infection and Immunity, Harbin Medical University & Heilongjiang Academy of Medical Science, Harbin, China
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
- Basic Medical College, Harbin Medical University, Harbin, China
| | - Zhoujun Lin
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
| | - Mao Yang
- Basic Medical College, Harbin Medical University, Harbin, China
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Yang Mao, ; Li Chenggang,
| | - Chenggang Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
- *Correspondence: Yang Mao, ; Li Chenggang,
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5
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Jain S, Kumar S. Cancer immunotherapy: dawn of the death of cancer? Int Rev Immunol 2020; 39:1-18. [PMID: 32530336 DOI: 10.1080/08830185.2020.1775827] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 05/11/2020] [Accepted: 05/16/2020] [Indexed: 02/08/2023]
Abstract
Cancer is one of the proficient evaders of the immune system which claims millions of lives every year. Developing therapeutics against cancer is extremely challenging as cancer involves aberrations in self, most of which are not detected by the immune system. Conventional therapeutics like chemotherapy, radiotherapy are not only toxic but they significantly lower the quality of life. Immunotherapy, which gained momentum in the 20th century, is emerging as one of the alternatives to the conventional therapies and is relatively less harmful but more costly. This review explores the modern advances in an array of such therapies and try to compare them along with a limited analysis of concerns associated with them.
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Affiliation(s)
- Sidhant Jain
- Department of Zoology, University of Delhi, Delhi, India
| | - Sahil Kumar
- Department of Pharmacology, Maulana Azad Medical College and Lok Nayak Hospital, New Delhi, India
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6
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Lynce F, Barac A, Geng X, Dang C, Yu AF, Smith KL, Gallagher C, Pohlmann PR, Nunes R, Herbolsheimer P, Warren R, Srichai MB, Hofmeyer M, Cunningham A, Timothee P, Asch FM, Shajahan-Haq A, Tan MT, Isaacs C, Swain SM. Prospective evaluation of the cardiac safety of HER2-targeted therapies in patients with HER2-positive breast cancer and compromised heart function: the SAFE-HEaRt study. Breast Cancer Res Treat 2019; 175:595-603. [PMID: 30852761 PMCID: PMC6534513 DOI: 10.1007/s10549-019-05191-2] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/01/2019] [Indexed: 01/03/2023]
Abstract
Purpose HER2-targeted therapies have substantially improved the outcome of patients with breast cancer, however, they can be associated with cardiac toxicity. Guidelines recommend holding HER2-targeted therapies until resolution of cardiac dysfunction. SAFE-HEaRt is the first trial that prospectively tests whether these therapies can be safely administered without interruptions in patients with cardiac dysfunction. Methods Patients with stage I–IV HER2-positive breast cancer candidates for trastuzumab, pertuzumab or ado-trastuzumab emtansine (TDM-1), with left ventricular ejection fraction (LVEF) 40–49% and no symptoms of heart failure (HF) were enrolled. All patients underwent cardiology visits, serial echocardiograms and received beta blockers and ACE inhibitors unless contraindicated. The primary endpoint was completion of the planned HER2-targeted therapies without developing either a cardiac event (CE) defined as HF, myocardial infarction, arrhythmia or cardiac death or significant asymptomatic worsening of LVEF. The study was considered successful if planned oncology therapy completion rate was at least 30%. Results Of 31 enrolled patients, 30 were evaluable. Fifteen patients were treated with trastuzumab, 14 with trastuzumab and pertuzumab, and 2 with TDM-1. Mean LVEF was 45% at baseline and 46% at the end of treatment. Twenty-seven patients (90%) completed the planned HER2-targeted therapies. Two patients experienced a CE and 1 had an asymptomatic worsening of LVEF to ≤ 35%. Conclusion This study provides safety data of HER2-targeted therapies in patients with breast cancer and reduced LVEF while receiving cardioprotective medications and close cardiac monitoring. Our results demonstrate the importance of collaboration between cardiology and oncology providers to allow for delivery of optimal oncologic care to this unique population. Electronic supplementary material The online version of this article (10.1007/s10549-019-05191-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- F Lynce
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA
| | - A Barac
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA
- MedStar Heart & Vascular Institute, Washington, DC, USA
| | - X Geng
- Department of Biostatistics, Bioinformatics & Biomathematics, Georgetown University Medical Center, Washington, DC, USA
| | - C Dang
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - A F Yu
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - K L Smith
- The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- The Johns Hopkins University Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD, USA
| | - C Gallagher
- Washington Cancer Institute, MedStar Washington Hospital Center, Washington, DC, USA
| | - P R Pohlmann
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA
| | - R Nunes
- The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- The Johns Hopkins University Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD, USA
| | | | - R Warren
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA
| | - M B Srichai
- MedStar Heart & Vascular Institute, Washington, DC, USA
- Department of Cardiology, MedStar Georgetown University Hospital, Washington, DC, USA
| | - M Hofmeyer
- MedStar Heart & Vascular Institute, Washington, DC, USA
| | - A Cunningham
- MedStar Health Research Institute, Hyattsville, MD, USA
| | - P Timothee
- MedStar Health Research Institute, Hyattsville, MD, USA
| | - F M Asch
- MedStar Heart & Vascular Institute, Washington, DC, USA
- MedStar Health Research Institute, Hyattsville, MD, USA
| | - A Shajahan-Haq
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA
| | - M T Tan
- Department of Biostatistics, Bioinformatics & Biomathematics, Georgetown University Medical Center, Washington, DC, USA
| | - C Isaacs
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA
| | - S M Swain
- Georgetown Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 4000 Reservoir Road NW, 120 Building D, Washington, DC, 20057-1400, USA.
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7
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Furuta T, Sabit H, Dong Y, Miyashita K, Kinoshita M, Uchiyama N, Hayashi Y, Hayashi Y, Minamoto T, Nakada M. Biological basis and clinical study of glycogen synthase kinase- 3β-targeted therapy by drug repositioning for glioblastoma. Oncotarget 2017; 8:22811-22824. [PMID: 28423558 PMCID: PMC5410264 DOI: 10.18632/oncotarget.15206] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 01/25/2017] [Indexed: 11/25/2022] Open
Abstract
Background Glycogen synthase kinase (GSK)-3β has emerged as an appealing therapeutic target for glioblastoma (GBM). Here, we investigated the therapeutic effect of the current approved drugs against GBM via inhibition of GSK3β activity both, in experimental setting and in a clinical study for recurrent GBM patients by repositioning existent drugs in combination with temozolomide (TMZ). Materials and Methods Progression-free and overall survival rates were compared between patients with low or high expression of active GSK3β in the primary tumor. GBM cells and a mouse model were examined for the effects of GSK3β-inhibitory drugs, cimetidine, lithium, olanzapine, and valproate. The safety and efficacy of the cocktail of these drugs (CLOVA cocktail) in combination with TMZ were tested in the mouse model and in a clinical study for recurrent GBM patients. Results Activation of GSK3β in the tumor inversely correlated with patient survival as an independent prognostic factor. CLOVA cocktail significantly inhibited cell invasion and proliferation. The patients treated with CLOVA cocktail in combination with TMZ showed increased survival compared to the control group treated with TMZ alone. Conclusions Repositioning of the GSK3β-inhibitory drugs improved the prognosis of refractory GBM patients with active GSK3β in tumors. Combination of CLOVA cocktail and TMZ is a promising approach for recurrent GBM.
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Affiliation(s)
- Takuya Furuta
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Hemragul Sabit
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yu Dong
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Katsuyoshi Miyashita
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masashi Kinoshita
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Naoyuki Uchiyama
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yasuhiko Hayashi
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yutaka Hayashi
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Toshinari Minamoto
- Division of Translational and Clinical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Mitsutoshi Nakada
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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8
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Cardiac toxicity of trastuzumab in elderly patients with breast cancer. JOURNAL OF GERIATRIC CARDIOLOGY : JGC 2016; 13:355-63. [PMID: 27403145 PMCID: PMC4921548 DOI: 10.11909/j.issn.1671-5411.2016.04.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Breast cancer (BC) is diagnosed in ≥ 65 year old women in about half of cases. Experts currently recommend that systemic therapy is offered to elderly patients with BC, if, based on their overall conditions and life expectancy, it can be reasonably anticipated that the benefits will outweigh the risks of treatment. Like for young subjects, the monoclonal antibody against human epidermal growth factor receptor-2 (HER-2), trastuzumab, represents a valid therapeutic option when BC over-expresses this receptor. Unfortunately, administration of trastuzumab is associated with the occurrence of left ventricular dysfunction and chronic heart failure (CHF), possibly because of interference with the homeostatic functions of HER-2 in the heart. Registry-based, retrospective analyses have reported an incidence of CHF around 25% in elderly women receiving trastuzumab compared with 10%-15% in those not given any therapy for BC, and the risk of CHF has been estimated to be two-fold higher in > 60-65 year old trastuzumab users vs. non-users. Extremely advanced age and preexisting cardiac disease have been shown to predispose to trastuzumab cardiotoxicity. Therefore, selection of older patients for treatment with trastuzumab should be primarily based on their general status and the presence of comorbidities; previous chemotherapy, especially with anthracyclines, should be also taken into account. Once therapy has started, efforts should be made to ensure regular cardiac surveillance. The role of selected biomarkers, such as cardiac troponin, or new imaging techniques (three-dimension, tissue Doppler echocardiography, magnetic resonance imaging) is promising, but must be further investigated especially in the elderly. Moreover, additional studies are needed in order to better understand the mechanisms by which trastuzumab affects the old heart.
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Zhang N, Chang Y, Rios A, An Z. HER3/ErbB3, an emerging cancer therapeutic target. Acta Biochim Biophys Sin (Shanghai) 2016; 48:39-48. [PMID: 26496898 DOI: 10.1093/abbs/gmv103] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 08/10/2015] [Indexed: 01/24/2023] Open
Abstract
HER3 is a member of the HER (EGFR/ErbB) receptor family consisting of four closely related type 1 transmembrane receptors (EGFR, HER2, HER3, and HER4). HER receptors are part of a complex signaling network intertwined with the Ras/Raf/MAPK, PI3K/AKT, JAK/STAT, and PKC signaling pathways. Aberrant activation of the HER receptors and downstream signaling molecules tips the balance on cellular events, leading to various types of cancers. Monoclonal antibodies (mAbs) and small molecule inhibitors targeting EGFR and HER2 tyrosine kinase activities exhibit clinical benefits in the treatment of several types of cancers, but their clinical efficacy is limited by the occurrence of drug resistance. HER3 is the preferred dimerization partner of HER2 and it is well established that HER3 plays an important role in drug resistance to EGFR- and HER2-targeting therapies. Since HER3 has limited kinase activity, mAbs are being explored to target HER3 for cancer therapy. Currently, approximately a dozen of anti-HER3 mAbs are at different stages of clinical development. However, the lack of established biomarkers has made it more challenging to stratify cancer patients to whom HER3-targeting therapies can be more effective. In this review, we focus on the validation of HER3 as a cancer drug target, the recent development in biomarker discovery for anti-HER3 therapies, and the progress made in the clinical development of HER3-targeting mAbs.
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Affiliation(s)
- Ningyan Zhang
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | | | - Adan Rios
- Division of Oncology, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Zhiqiang An
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
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Schramm A, De Gregorio N, Widschwendter P, Fink V, Huober J. Targeted Therapies in HER2-Positive Breast Cancer - a Systematic Review. Breast Care (Basel) 2015; 10:173-8. [PMID: 26557822 DOI: 10.1159/000431029] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
About 20% of all breast cancer patients have a human epidermal growth factor receptor 2 (HER2)-positive breast tumor. This entity underwent an impressive change in prognosis, with notable improvement of progression-free survival and overall survival. Due to more aggressive tumors and no specific therapy, HER2 overexpression was historically seen as a negative prognostic marker, with worse prognosis and increased risk of recurrent disease. Trastuzumab, the first anti-HER2 antibody, revolutionized the systemic therapy options in HER2-positive breast cancer and initiated several targeted therapies and more personalized treatment strategies. Over the years, multiple HER2-targeting drugs stepped into clinical practice, for the curative as well as the metastatic situation. This review summarizes the targeted treatment options in HER2-positive breast cancer and their current impact in the clinical routine. Results of the most outstanding trials in HER2-targeted therapies and important ongoing trials are subsequently described for an up-to-date overview.
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Affiliation(s)
- Amelie Schramm
- Department of Gynecology and Obstetrics, University Hospital Ulm, Germany
| | | | | | - Visnja Fink
- Department of Gynecology and Obstetrics, University Hospital Ulm, Germany
| | - Jens Huober
- Department of Gynecology and Obstetrics, University Hospital Ulm, Germany
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11
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Abstract
Cancers of the stomach and esophagus are among the most challenging cancers of the GI tract to treat, associated with poor median survivals for metastatic disease and significant, sometimes prolonged, deteriorations in patient performance status as the diseases progress. However, in the past decade, we have begun to better understand disease biology and carcinogenesis, leading to the identification of subtypes of these diseases. There is also an increasing awareness of the global heterogeneity of disease and its impact on drug development. Our improved understanding of the molecular underpinnings of gastric and esophageal cancers has been accompanied with the development of novel therapeutic strategies. Recent actively investigated targets in this disease include human epidermal growth factor receptor 2, angiogenesis, MET, and immune checkpoint inhibition, with approvals of two new targeted agents, trastuzumab and ramucirumab. Improvements in our ability to deliver cytotoxic therapy, which is better tolerated and allows patients an opportunity to benefit from second- and more advanced lines of therapy, have also been observed. In this review, the current state-of-the-art management of advanced and metastatic gastric and esophageal adenocarcinomas, specifically highlighting the development of targeted therapies in these diseases, is described.
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Affiliation(s)
- Manish A Shah
- From Weill Cornell Medical College of Cornell University, New York-Presbyterian Hospital, New York, NY.
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