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Mo C, Sterpi M, Jeon H, Bteich F. Resistance to Anti-HER2 Therapies in Gastrointestinal Malignancies. Cancers (Basel) 2024; 16:2854. [PMID: 39199625 PMCID: PMC11352490 DOI: 10.3390/cancers16162854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 09/01/2024] Open
Abstract
Human epidermal growth factor 2 (HER2) is a tyrosine kinase receptor that interacts with multiple signaling pathways related to cellular growth and proliferation. Overexpression or amplification of HER2 is linked to various malignancies, and there have been decades of research dedicated to targeting HER2. Despite the landmark ToGA trial, progress in HER2-positive gastrointestinal malignancies has been hampered by drug resistance. This review examines current HER2 expression patterns and therapies for gastroesophageal, colorectal, biliary tract, and small bowel cancers, while dissecting potential resistance mechanisms that limit treatment effectiveness.
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Affiliation(s)
- Christiana Mo
- Department of Medical Oncology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (C.M.); (M.S.); (H.J.)
- Department of Medical Oncology, Montefiore Medical Center, Bronx, NY 10467, USA
| | - Michelle Sterpi
- Department of Medical Oncology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (C.M.); (M.S.); (H.J.)
- Department of Medical Oncology, Montefiore Medical Center, Bronx, NY 10467, USA
| | - Hyein Jeon
- Department of Medical Oncology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (C.M.); (M.S.); (H.J.)
- Department of Medical Oncology, Montefiore Medical Center, Bronx, NY 10467, USA
| | - Fernand Bteich
- Department of Medical Oncology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (C.M.); (M.S.); (H.J.)
- Department of Medical Oncology, Montefiore Medical Center, Bronx, NY 10467, USA
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2
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Scandurra G, Lombardo V, Scibilia G, Sambataro D, Gebbia V, Scollo P, Pecorino B, Valerio MR. New Frontiers in the Treatment of Patients with HER2+ Cancer and Brain Metastases: Is Radiotherapy Always Useful? Cancers (Basel) 2024; 16:2466. [PMID: 39001528 PMCID: PMC11240652 DOI: 10.3390/cancers16132466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/16/2024] Open
Abstract
Brain metastases (BM) pose a significant challenge in the management of HER2+ breast cancer since almost 50% of patients with HER2+ breast cancer develop brain tumors. The complex process of brain metastases involves genetic mutations, adaptations and mechanisms to overcome the blood-brain barrier. While radiotherapy is still fundamental in local therapy, its use is associated with cognitive adverse effects and limited long-term control, necessitating the exploration of alternative treatments. Targeted therapies, including tyrosine kinase inhibitors, monoclonal antibodies, and antibody-drug conjugates, offer promising options for HER2+ breast cancer patients with BM. Clinical trials have demonstrated the efficacy of these agents in controlling tumor growth and improving patient outcomes, posing the question of whether radiotherapy is always the unique choice in treating this cancer. Ongoing research into novel anti-HER2 antibodies and innovative combination therapies holds promise for advancing treatment outcomes and enhancing patient care in this clinical scenario. This narrative review provides a comprehensive overview of traditional medical treatments, molecularly targeted therapy and investigational agents in the management of HER2+ breast cancer with BM, highlighting the evolving landscape and potential future directions in treatment strategies to improve patient survival and quality of life.
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Affiliation(s)
- Giuseppa Scandurra
- Medical Oncology Unit, Cannizzaro Hospital, 95126 Catania, Italy
- Department of the Medicine and Surgery, Kore University, 94100 Enna, Italy
| | | | - Giuseppe Scibilia
- Department of the Medicine and Surgery, Kore University, 94100 Enna, Italy
- Gynecology Unit, Giovanni Paolo II Hospital, 97100 Ragusa, Italy
| | - Daniela Sambataro
- Department of the Medicine and Surgery, Kore University, 94100 Enna, Italy
- Medical Oncology Unit, Umberto I Hospital, 94100 Enna, Italy
| | - Vittorio Gebbia
- Department of the Medicine and Surgery, Kore University, 94100 Enna, Italy
- Medical Oncology Unit, CdC Torina, 90145 Palermo, Italy
| | - Paolo Scollo
- Department of the Medicine and Surgery, Kore University, 94100 Enna, Italy
- Gynecology and Obstetrics Unit, Cannizzaro Hospital, 95126 Catania, Italy
| | - Basilio Pecorino
- Department of the Medicine and Surgery, Kore University, 94100 Enna, Italy
- Gynecology and Obstetrics Unit, Umberto I Hospital, 94100 Enna, Italy
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Bonomi M, Spada D, Baiocchi GL, Celotti A, Brighenti M, Grizzi G. Targeting HER2 in Gastroesophageal Adenocarcinoma: Molecular Features and Updates in Clinical Practice. Int J Mol Sci 2024; 25:3876. [PMID: 38612688 PMCID: PMC11011631 DOI: 10.3390/ijms25073876] [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: 02/17/2024] [Revised: 03/23/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024] Open
Abstract
Gastroesophageal adenocarcinoma (GEA) is one of the principal causes of death related to cancer globally. Human epidermal growth factor receptor 2 (HER2) is a tyrosine kinase receptor which is found to be overexpressed or amplified in approximately 20% of GEA cases. In GEA, the identification of HER2-positive status is crucial to activate a specific anti-HER2 targeted therapy. The landmark ToGA trial demonstrated the superiority of adding trastuzumab to platinum-based chemotherapy, becoming the first-line standard of treatment. However, unlike breast cancer, the efficacy of other anti-HER2 drugs, such as lapatinib, pertuzumab, and T-DM1, has failed to improve outcomes in advanced and locally advanced resectable GEA. Recently, the combination of trastuzumab with pembrolizumab, along with chemotherapy, and the development of trastuzumab deruxtecan, with its specific bystander activity, demonstrated improved outcomes, renewing attention in the treatment of this disease. This review will summarise historical and emerging therapies for the treatment of HER2-positive GEA, with a section dedicated to the HER2 molecular pathway and the use of novel blood biomarkers, such as circulating tumour DNA and circulating tumour cells, which may be helpful in the future to guide treatment decisions.
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Affiliation(s)
- Maria Bonomi
- Oncology Unit, ASST Cremona, 26100 Cremona, Italy; (M.B.); (D.S.); (M.B.)
| | - Daniele Spada
- Oncology Unit, ASST Cremona, 26100 Cremona, Italy; (M.B.); (D.S.); (M.B.)
| | - Gian Luca Baiocchi
- Department of Surgery, ASST Cremona, 26100 Cremona, Italy; (G.L.B.); (A.C.)
| | - Andrea Celotti
- Department of Surgery, ASST Cremona, 26100 Cremona, Italy; (G.L.B.); (A.C.)
| | - Matteo Brighenti
- Oncology Unit, ASST Cremona, 26100 Cremona, Italy; (M.B.); (D.S.); (M.B.)
| | - Giulia Grizzi
- Oncology Unit, ASST Cremona, 26100 Cremona, Italy; (M.B.); (D.S.); (M.B.)
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Zhu K, Yang X, Tai H, Zhong X, Luo T, Zheng H. HER2-targeted therapies in cancer: a systematic review. Biomark Res 2024; 12:16. [PMID: 38308374 PMCID: PMC10835834 DOI: 10.1186/s40364-024-00565-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 01/15/2024] [Indexed: 02/04/2024] Open
Abstract
Abnormal alterations in human epidermal growth factor receptor 2 (HER2, neu, and erbB2) are associated with the development of many tumors. It is currently a crucial treatment for multiple cancers. Advanced in molecular biology and further exploration of the HER2-mediated pathway have promoted the development of medicine design and combination drug regimens. An increasing number of HER2-targeted drugs including specific monoclonal antibodies, tyrosine kinase inhibitors (TKIs), and antibody-drug conjugates (ADCs) have been approved by the U.S. Food and Drug Administration. The emergence of ADCs, has significantly transformed the treatment landscape for various tumors, such as breast, gastric, and bladder cancer. Classic monoclonal antibodies and novel TKIs have not only demonstrated remarkable efficacy, but also expanded their indications, with ADCs in particular exhibiting profound clinical applications. Moreover the concept of low HER2 expression signifies a breakthrough in HER2-targeted therapy, indicating that an increasing number of tumors and patients will benefit from this approach. This article, provides a comprehensive review of the underlying mechanism of action, representative drugs, corresponding clinical trials, recent advancements, and future research directions pertaining to HER2-targeted therapy.
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Affiliation(s)
- Kunrui Zhu
- Institute for Breast Health Medicine, Cance Center, Breast Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Xinyi Yang
- College of Clinical Medical, Guizhou Medical University, Guiyang, 550000, Guizhou Province, China
| | - Hebei Tai
- College of Clinical Medical, Guizhou Medical University, Guiyang, 550000, Guizhou Province, China
| | - Xiaorong Zhong
- Institute for Breast Health Medicine, Cance Center, Breast Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ting Luo
- Institute for Breast Health Medicine, Cance Center, Breast Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Hong Zheng
- Institute for Breast Health Medicine, Cance Center, Breast Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
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Guerra E, Trerotola M, Relli V, Lattanzio R, Ceci M, Boujnah K, Pantalone L, Di Pietro R, Iezzi M, Tinari N, Alberti S. The 2EF Antibody Targets a Unique N-Terminal Epitope of Trop-2 and Enhances the In Vivo Activity of the Cancer-Selective 2G10 Antibody. Cancers (Basel) 2023; 15:3721. [PMID: 37509383 PMCID: PMC10378344 DOI: 10.3390/cancers15143721] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Trop-2 proteolytic processing in cancer cells exposes epitopes that were specifically targeted by the 2G10 antibody. We sought additional recognition of Trop-2 within difficult-to-reach, densely packed tumor sites. Trop-2 deletion mutants were employed in immunization and screening procedures, and these led to the recognition of a novel epitope in the N-terminal region of Trop-2, by the 2EF antibody. The 2EF mAb was shown to bind Trop-2 at cell-cell junctions in MCF-7 breast cancer cells, and in deeply seated sites in prostate cancer, that were inaccessible to benchmark anti-Trop-2 antibodies. The 2EF antibody was shown to inhibit the growth of HT29 colon tumor cells in vitro, with the highest activity at high cell density. In vivo, 2EF showed anticancer activity against SKOv3 ovarian, Colo205, HT29, HCT116 colon and DU-145 prostate tumors, with the highest impact on densely packed tumor sites, whereby 2EF outcompeted benchmark anti-Trop-2 antibodies. Given the different recognition modes of Trop-2 by 2EF and 2G10, we hypothesized the effective interaction of the two mAb in vivo. The 2EF mAb was indeed demonstrated to enhance the activity of 2G10 against tumor xenotransplants, opening novel avenues for Trop-2-targeted therapy. We humanized 2EF by state-of-the-art CDR grafting/re-modeling, yielding the Hu2EF for therapy of Trop-2-expressing tumors in patients.
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Affiliation(s)
- Emanuela Guerra
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Marco Trerotola
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Valeria Relli
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Rossano Lattanzio
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Martina Ceci
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Khouloud Boujnah
- Unit of Medical Genetics, Department of Biomedical Sciences-BIOMORF, University of Messina, 98125 Messina, Italy
| | - Ludovica Pantalone
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Roberta Di Pietro
- Department of Medicine and Aging Sciences, Section of Biomorphology, G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
| | - Manuela Iezzi
- Department of Neurosciences, Imaging and Clinical Sciences, Center for Advanced Studies and Technnology (CAST), G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Nicola Tinari
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Saverio Alberti
- Unit of Medical Genetics, Department of Biomedical Sciences-BIOMORF, University of Messina, 98125 Messina, Italy
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Ariga S. History and Future of HER2-Targeted Therapy for Advanced Gastric Cancer. J Clin Med 2023; 12:3391. [PMID: 37240498 PMCID: PMC10219249 DOI: 10.3390/jcm12103391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Human epidermal growth factor receptor 2 (HER2) is a receptor tyrosine kinase that belongs to the human epidermal growth factor receptor family. It is overexpressed/amplified in approximately 20% of gastric or gastroesophageal junction cancers. HER2 is being developed as a therapeutic target in a variety of cancers, and several agents have been shown to be effective in breast cancer. The development of HER2-targeted therapy for gastric cancer successfully began with trastuzumab. However, while effective in breast cancer, the successive anti-HER2 agents lapatinib, T-DM1, and pertuzumab failed to demonstrate benefits regarding survival in gastric cancer compared with the existing standard therapies. Intrinsic differences lie between gastric and breast cancer in terms of HER2-positive tumor biology, which may make development difficult. Recently, a novel anti-HER2 agent, trastuzumab deruxtecan, was introduced, and the development of HER2-positive gastric cancer agents has been moving to the next stage. This review summarizes the current HER2-targeted therapy for gastric or gastroesophageal cancer in chronological order and describes the promising future of HER2-targeted therapy.
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Affiliation(s)
- Shin Ariga
- Department of Medical Oncology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
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7
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Sukov WR, Zhou J, Geiersbach KB, Keeney GL, Carter JM, Schoolmeester JK. Frequency of HER2 protein overexpression and HER2 gene amplification in endometrial clear cell carcinoma. Hum Pathol 2023:S0046-8177(23)00095-3. [PMID: 37094656 DOI: 10.1016/j.humpath.2023.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/09/2023] [Accepted: 04/17/2023] [Indexed: 04/26/2023]
Abstract
HER2 (ERBB2) overexpression and/or HER2 gene amplification has been well established in several tumors types and when present HER2 directed therapy may be to be efficacious. While recent findings suggests that HER2 overexpression and HER2 amplification are a relatively common in serous endometrial carcinoma, similar data regarding clear cell endometrial carcinoma (CCC) is difficult to interpret due to issues such as diagnostic criteria, sample type and HER2 interpretation criteria. Our goals were to study HER2 expression and HER2 copy number status in hysterectomy specimens from a large series of patients with pure CCC to determine the frequency of HER2 overexpression and HER2 amplification and evaluate applicability of current HER2 interpretation criteria. Pure CCC specimens derived from hysterectomy specimens from 26 patients were identified. All diagnoses were confirmed by two gynecologic pathologists. Immunohistochemistry for HER2 protein and fluorescence in situ hybridization (FISH) studies for HER2 were performed on whole-slide sections from all cases. Results were interpreted according to the 2018 ASO/CAP HER2 guidelines for breast cancer and International Society of Gynecologic Pathologists (ISGyP) HER2 guidelines for serous endometrial carcinoma. Additional testing was performed when indicated by the guidelines. HER2 expression by immunohistochemistry was 3+ in 4% and 0% of cases, and 2+ in 46% and 52% of cases, by 2018 ASCO/CAP and ISGyP criteria, respectively, while the remaining cases were negative. HER2 testing by FISH showed a positive result in 27% of tumors with 2018 ASCO/CAP guidelines, while 23% were positive with the ISGyP criteria. Our findings indicate that HER2 overexpression and HER2 amplification occur in a subset of CCC. Therefore, additional study into the potential benefit of HER2 targeted therapy in patients with CCC is warranted.
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Affiliation(s)
- William R Sukov
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, U.S.A..
| | - Jain Zhou
- Department of Pathology, University of New Mexico Health Sciences Cancer Center, Albuquerque, NM, U.S.A
| | | | - Gary L Keeney
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, U.S.A
| | - Jodi M Carter
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, U.S.A
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Swain SM, Shastry M, Hamilton E. Targeting HER2-positive breast cancer: advances and future directions. Nat Rev Drug Discov 2023; 22:101-126. [PMID: 36344672 PMCID: PMC9640784 DOI: 10.1038/s41573-022-00579-0] [Citation(s) in RCA: 253] [Impact Index Per Article: 253.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2022] [Indexed: 11/09/2022]
Abstract
The long-sought discovery of HER2 as an actionable and highly sensitive therapeutic target was a major breakthrough for the treatment of highly aggressive HER2-positive breast cancer, leading to approval of the first HER2-targeted drug - the monoclonal antibody trastuzumab - almost 25 years ago. Since then, progress has been swift and the impressive clinical activity across multiple trials with monoclonal antibodies, tyrosine kinase inhibitors and antibody-drug conjugates that target HER2 has spawned extensive efforts to develop newer platforms and more targeted therapies. This Review discusses the current standards of care for HER2-positive breast cancer, mechanisms of resistance to HER2-targeted therapy and new therapeutic approaches and agents, including strategies to harness the immune system.
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Affiliation(s)
- Sandra M. Swain
- grid.516085.f0000 0004 0606 3221Department of Medicine, Georgetown Lombardi Comprehensive Cancer Center and MedStar Health, Washington, DC USA
| | - Mythili Shastry
- grid.419513.b0000 0004 0459 5478Sarah Cannon Research Institute, Nashville, TN USA
| | - Erika Hamilton
- grid.419513.b0000 0004 0459 5478Sarah Cannon Research Institute, Nashville, TN USA ,grid.492963.30000 0004 0480 9560Tennessee Oncology, Nashville, TN USA
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Sterling C, Márquez-Garbán D, Vadgama JV, Pietras RJ. Squalamines in Blockade of Tumor-Associated Angiogenesis and Cancer Progression. Cancers (Basel) 2022; 14:5154. [PMID: 36291938 PMCID: PMC9601113 DOI: 10.3390/cancers14205154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 12/30/2022] Open
Abstract
Mechanisms of action of squalamine in human vascular endothelial cells indicate that this compound attaches to cell membranes, potentially interacting with calmodulin, Na+/H+ exchanger isoform NHE3 and other signaling pathways involved in the angiogenic process. Thus, squalamine elicits blockade of VEGF-induced endothelial tube-like formation in vitro. Further, squalamine reduces growth of several preclinical models of human cancers in vivo and acts to stop metastatic tumor spread, actions due largely to blockade of angiogenesis induced by the tumor and tumor microenvironment. Squalamine in Phase I/II trials, alone or combined with standard care, shows promising antitumor activity with limited side-effects in patients with advanced solid cancers. Increased attention on squalamine regulation of signaling pathways with or without combination treatments in solid malignancies deserves further study.
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Affiliation(s)
- Colin Sterling
- Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA
| | - Diana Márquez-Garbán
- Division of Hematology-Oncology, Department of Medicine, UCLA David Geffen School of Medicine and UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA 90095, USA
| | - Jaydutt V. Vadgama
- Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA
- Division of Hematology-Oncology, Department of Medicine, UCLA David Geffen School of Medicine and UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA 90095, USA
| | - Richard J. Pietras
- Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA
- Division of Hematology-Oncology, Department of Medicine, UCLA David Geffen School of Medicine and UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA 90095, USA
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Resistance to Trastuzumab. Cancers (Basel) 2022; 14:cancers14205115. [PMID: 36291900 PMCID: PMC9600208 DOI: 10.3390/cancers14205115] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Trastuzumab is a humanized antibody that has significantly improved the management and treatment outcomes of patients with cancers that overexpress HER2. Many research groups, both in academia and industry, have contributed towards understanding the various mechanisms engaged by trastuzumab to mediate its anti-tumor effects. Nevertheless, data from several clinical studies have indicated that a significant proportion of patients exhibit primary or acquired resistance to trastuzumab therapy. In this article, we discuss underlying mechanisms that contribute towards to resistance. Furthermore, we discuss the potential strategies to overcome some of the mechanisms of resistance to enhance the therapeutic efficacy of trastuzumab and other therapies based on it. Abstract One of the most impactful biologics for the treatment of breast cancer is the humanized monoclonal antibody, trastuzumab, which specifically recognizes the HER2/neu (HER2) protein encoded by the ERBB2 gene. Useful for both advanced and early breast cancers, trastuzumab has multiple mechanisms of action. Classical mechanisms attributed to trastuzumab action include cell cycle arrest, induction of apoptosis, and antibody-dependent cell-mediated cytotoxicity (ADCC). Recent studies have identified the role of the adaptive immune system in the clinical actions of trastuzumab. Despite the multiple mechanisms of action, many patients demonstrate resistance, primary or adaptive. Newly identified molecular and cellular mechanisms of trastuzumab resistance include induction of immune suppression, vascular mimicry, generation of breast cancer stem cells, deregulation of long non-coding RNAs, and metabolic escape. These newly identified mechanisms of resistance are discussed in detail in this review, particularly considering how they may lead to the development of well-rationalized, patient-tailored combinations that improve patient survival.
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Nicolini A, Ferrari P, Carpi A. Immune Checkpoint Inhibitors and Other Immune Therapies in Breast Cancer: A New Paradigm for Prolonged Adjuvant Immunotherapy. Biomedicines 2022; 10:biomedicines10102511. [PMID: 36289773 PMCID: PMC9599105 DOI: 10.3390/biomedicines10102511] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/25/2022] [Accepted: 10/02/2022] [Indexed: 02/05/2023] Open
Abstract
Background: Breast cancer is the most common form of cancer in women worldwide. Advances in the early diagnosis and treatment of cancer in the last decade have progressively decreased the cancer mortality rate, and in recent years, immunotherapy has emerged as a relevant tool against cancer. HER2+ and triple-negative breast cancers (TNBCs) are considered more immunogenic and suitable for this kind of treatment due to the higher rate of tumor-infiltrating lymphocytes (TILs) and programmed death ligand 1 (PD-L1) expression. In TNBC, genetic aberrations further favor immunogenicity due to more neo-antigens in cancer cells. Methods: This review summarizes the principal ongoing conventional and investigational immunotherapies in breast cancer. Particularly, immune checkpoint inhibitors (ICIs) and their use alone or combined with DNA damage repair inhibitors (DDRis) are described. Then, the issue on immunotherapy with monoclonal antibodies against HER-2 family receptors is updated. Other investigational immunotherapies include a new schedule based on the interferon beta-interleukin-2 sequence that was given in ER+ metastatic breast cancer patients concomitant with anti-estrogen therapy, which surprisingly showed promising results. Results: Based on the scientific literature and our own findings, the current evaluation of tumor immunogenicity and the conventional model of adjuvant chemotherapy (CT) are questioned. Conclusions: A novel strategy based on additional prolonged adjuvant immunotherapy combined with hormone therapy or alternated with CT is proposed.
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Affiliation(s)
- Andrea Nicolini
- Department of Oncology, Transplantations and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy
- Correspondence:
| | - Paola Ferrari
- Unit of Oncology, Department of Medical and Oncological Area, Azienda Ospedaliera-Universitaria Pisana, 56125 Pisa, Italy
| | - Angelo Carpi
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
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Fujita K, Yao T. Discordance of positive immunohistochemical results among different primary HER2 antibodies used in breast cancer: A comparison between Histofine® HER2 Kit (MONO) SV2-61γ antibody and Ventana I-VIEW PATHWAY™ HER2 4B5 antibody. REVISTA ESPANOLA DE PATOLOGIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE ANATOMIA PATOLOGICA Y DE LA SOCIEDAD ESPANOLA DE CITOLOGIA 2022; 55:222-229. [PMID: 36154727 DOI: 10.1016/j.patol.2022.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/25/2022] [Accepted: 04/01/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Immunohistochemical (IHC) testing for human epidermal growth factor receptor 2 (HER2) expression status renders variable scores among different primary antibodies. MATERIALS AND METHODS We assessed HER2 expression status by IHC score using two types of kits, i.e., Roche Ventana I-VIEW PATHWAY™ HER2 using the 4B5 antibody that recognizes the intracellular domain (ICD) and Nichirei Biosciences Histofine® HER2 Kit (MONO) using the SV2-61γ antibody that recognizes the extracellular domain (ECD). In addition, we determined the presence or absence of the ECD in samples by Western blotting (WB) and examined its relationship with the IHC score. RESULTS Of 101 samples, 44 and 9 samples received a score of 2+/3+ by IHC with 4B5 and SV2-61γ, respectively. A verification by WB in samples with a discrepancy of IHC scores found that samples with the score of 2+/3+ with SV2-61γ showed a significantly higher protein intensity of p185HER2 with the ECD, whereas samples with a score of 2+/3+ with 4B5 but as 0/1+ with SV2-61γ showed a significantly higher protein intensity of p95HER2 without the ECD. CONCLUSION The nature of primary antibodies used for IHC and the presence or absence of the ECD in samples may contribute to different positive rates between 4B5 and SV2-61γ.
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Affiliation(s)
- Kei Fujita
- Juntendo University Graduate School of Medicine, Department of Human Pathology, Tokyo, Japan.
| | - Takashi Yao
- Juntendo University Graduate School of Medicine, Department of Human Pathology, Tokyo, Japan
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13
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Wu X, Yang H, Yu X, Qin JJ. Drug-resistant HER2-positive breast cancer: Molecular mechanisms and overcoming strategies. Front Pharmacol 2022; 13:1012552. [PMID: 36210846 PMCID: PMC9540370 DOI: 10.3389/fphar.2022.1012552] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/05/2022] [Indexed: 11/24/2022] Open
Abstract
Breast cancer is one of the most common malignancies and the leading cause of cancer-related death in women. HER2 overexpression is a factor for poor prognosis in breast cancer, and anti-HER2 therapy improves survival in these patients. A dual-targeted combination of pertuzumab and trastuzumab, alongside cytotoxic chemotherapy, constitutes the primary treatment option for individuals with early-stage, HER2-positive breast cancer. Antibody-drug conjugate (ADC) and tyrosine kinase inhibitors (TKI) also increase the prognosis for patients with metastatic breast cancer. However, resistance to targeted therapy eventually occurs. Therefore, it is critical to investigate how HER2-positive breast cancer is resistant to targeted therapy and to develop novel drugs or strategies to overcome the resistance simultaneously. This review aims to provide a comprehensive discussion of the HER2-targeted agents currently in clinical practice, the molecular mechanisms of resistance to these drugs, and the potential strategies for overcoming resistance.
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Affiliation(s)
| | | | - Xingfei Yu
- *Correspondence: Xingfei Yu, ; Jiang-Jiang Qin,
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14
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Huh YJ, Cho SY, Cho MS, Lee KE, Lee JH. Comparative analysis of cancer gene mutations using targeted sequencing in matched primary and recurrent gastric cancers after chemotherapy. Genes Genomics 2022; 44:1425-1435. [PMID: 35622232 DOI: 10.1007/s13258-022-01248-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 03/17/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Investigation of responsiveness-associated genes using longitudinal mutation analyses after standard treatments in recurrent gastric cancer (GC) is limited. OBJECTIVE To evaluate the somatic mutations associated with resistance to combined treatment involving fluorouracil (FU) or platinum (PL) in advanced GC. METHODS Samples from patients with advanced GC treated with FU or PL alone, or surgery plus FU/PL, were studied. GC patients who relapsed after standard chemotherapy (FU/PL) and with presence of tumor samples from initial diagnosis and recurrence were included. Targeted sequencing analysis of 143 cancer-related genes was performed using an Oncomine Comprehensive Cancer Panel. RESULTS Matched samples of primary and recurrent lesions were analyzed in sixteen patients with GC. When genes with recurrent mutations in two or more patients were used as specific findings, a total of 26 genes were found. TP53 was the most predominantly increased allele frequency (AF) in recurrent GCs after standard treatment. The mutational AF of ERBB2, PTEN, and BRCA2 also commonly increased, suggesting the role of these mutations in treatment resistance, whereas the mutational AF of VLH, NF1, and STK11 frequently decreased in recurrent tumors, suggesting the role of these mutations in increasing sensitivity to treatment. TCGA gastric cancer data (n = 436) were analyzed, and mutation sites detected in 16 GC patients in this study were in agreement with TCGA cohort with some exceptions. Overall survival according to gene expression associated with chemotherapy responsiveness exhibited compatible patterns with gain or loss-of-function mutations of each gene. CONCLUSIONS Mutations in TP53, ERBB2, PTEN, BRCA2, VHL, NF1, and STK11 are candidate somatic alterations related to chemoresistance in GC.
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Affiliation(s)
- Yeon-Ju Huh
- Department of Surgery, Ewha Womans University School of Medicine, Anyangcheon-ro, Yangcheon-gu, 1071, Seoul, Korea.,Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sung-Yup Cho
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Medical Research Center, Genomic Medicine Institute (GMI), Seoul National University, Seoul, Korea
| | - Min-Sun Cho
- Department of pathology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kyoung-Eun Lee
- Department of oncology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Joo-Ho Lee
- Department of Surgery, Ewha Womans University School of Medicine, Anyangcheon-ro, Yangcheon-gu, 1071, Seoul, Korea. .,Department of Surgery, Nowon Eulji Medical Center, Eulji University School of Medicine, 68, Hangeulbiseok-ro, Nowon-gu, Seoul, Korea.
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15
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Li D, Tu Y, Jin K, Duan L, Hong Y, Xu J, Chen N, Zhang Z, Zuo H, Gong W, Zhang J, Wang Q, Qian H, Wang X, Ke Y, Xia G. Discovery of SPH5030, a Selective, Potent, and Irreversible Tyrosine Kinase Inhibitor for HER2-Amplified and HER2-Mutant Cancer Treatment. J Med Chem 2022; 65:5334-5354. [PMID: 35319895 DOI: 10.1021/acs.jmedchem.1c00710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Small-molecule irreversible tyrosine kinase inhibitors as high potent agents have led to improvements in disease-free and overall survival in patients with HER2-amplified cancer. The approved irreversible HER2 inhibitors, neratinib and pyrotinib, both lack HER2 selectivity, leading to off-target adverse events in patients. The development of HER2 mutation during treatment also hampers the progress of the treatment. We used a molecular hybridization strategy for structural optimizations, in conjunction with in vitro and in vivo drug-like property screening, to obtain a clinical candidate SPH5030. Overall, SPH5030 showed excellent activities against four frequent kinds of HER2 mutants and high relative HER2 selectivity compared with neratinib and pyrotinib, good pharmacokinetic characteristics with desirable bioavailabilities, and significant in vivo antitumor efficacy in xenograft mouse models, especially in a HER2 mutation A775_G776insYVMA xenograft mouse model with its potency much higher than those of neratinib and pyrotinib.
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Affiliation(s)
- Di Li
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Yuanxiang Tu
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Kaijun Jin
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Lingjun Duan
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Yuan Hong
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Jia Xu
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Na Chen
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Zhihui Zhang
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Hongjian Zuo
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Wanchun Gong
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Jing Zhang
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Qian Wang
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Hai Qian
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China.,Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Xuenan Wang
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ying Ke
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
| | - Guangxin Xia
- Central Research Institute, Shanghai Pharmaceuticals Holding Company Limited, Building 4, No. 898 Halei Road, Zhangjiang Hi-tech Park, Pudong New Area, Shanghai 201203, P. R. China
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16
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Kawamoto Y, Yuki S, Meguro T, Hatanaka K, Uebayashi M, Nakamura M, Okuda H, Iwanaga I, Kato T, Nakano S, Sato A, Harada K, Oba K, Sakata Y, Sakamoto N, Komatsu Y. Phase II Study of Continued Trastuzumab Plus Irinotecan in Patients with HER2-positive Gastric Cancer Previously Treated with Trastuzumab (HGCSG 1201). Oncologist 2022; 27:340-e374. [PMID: 35303078 PMCID: PMC9075004 DOI: 10.1093/oncolo/oyab062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/28/2021] [Indexed: 11/26/2022] Open
Abstract
Background The efficacy of irinotecan plus continuous trastuzumab beyond progression in patients with gastric cancer previously treated with trastuzumab plus standard first-line chemotherapy has not been reported. Methods Patients with human epidermal growth factor receptor 2 (HER2)-positive advanced gastric cancer who were previously treated with trastuzumab received trastuzumab every 3 weeks and irinotecan every 2 weeks. The primary endpoint was the overall response rate (ORR), and the secondary endpoints included progression-free survival (PFS), 6-month survival rates, safety, and subgroup analysis by HER2 status. Results Sixteen patients were enrolled in a 3-year pre-planned registration period. This study was prematurely closed due to poor patient accrual. The ORR and disease control rate were 6.7% (95% CI, 0.2-32.0) and 53.3% (95% CI, 26.6-78.7). The median PFS and overall survival (OS) were 2.4 months (95% CI, 0.0-5.2) and 9.7 months (95% CI, 8.2-11.2), respectively. The most frequently reported grades 3-4 adverse events were neutropenia (40%), anemia (27%), anorexia (33%), and fatigue (33%). Conclusion With only 16 patients enrolled, the present study has very low power to detect any clinical benefit of trastuzumab plus irinotecan beyond disease progression in patients with HER2-positive advanced gastric cancer who previously received trastuzumab. Trial Identifier: UMIN000007636.
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Affiliation(s)
- Yasuyuki Kawamoto
- Division of Cancer Center, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Yuki
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - Takashi Meguro
- Department of Internal Medicine, Hokkaido Gastroenterology Hospital, Sapporo, Japan
| | - Kazuteru Hatanaka
- Department of Gastroenterology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Minoru Uebayashi
- Department of Gastroenterology, Japanese Red Cross Kitami Hospital, Kitami, Japan
| | - Michio Nakamura
- Department of Gastroenterology, Sapporo City General Hospital, Sapporo, Japan
| | - Hiroyuki Okuda
- Department of Medical Oncology, Keiyukai Sapporo Hospital, Sapporo, Japan
| | - Ichiro Iwanaga
- Department of Medical Oncology, Sapporo-Kosei General Hospital, Sapporo, Japan
| | - Takashi Kato
- Department of Gastroenterology, Tomakomai City Hospital, Tomakomai, Japan
| | - Shintaro Nakano
- Department of Gastroenterology, Iwamizawa Municipal General Hospital, Iwamizawa, Japan
| | - Atsushi Sato
- Department of Medical Oncology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kazuaki Harada
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - Koji Oba
- Department of Biostatistics, School of Public Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuh Sakata
- Department of Internal Medicine, Misawa City Hospital, Misawa, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - Yoshito Komatsu
- Division of Cancer Center, Hokkaido University Hospital, Sapporo, Japan
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17
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Fang Z, Ying Y, Jin W, Xu H. Quantitative analysis of effects of salvianic acid a combined with hydroxy safflower yellow a on rat endothelial cells after hypoxic injury using the combination index method. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e201134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Zheyu Fang
- Zhejiang Chinese Medical University, China
| | - Yuqi Ying
- Zhejiang Chinese Medical University, China
| | | | - Huaping Xu
- Zhejiang Chinese Medical University, China
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18
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Gao C, Wang F, Suki D, Strom E, Li J, Sawaya R, Hsu L, Raghavendra A, Tripathy D, Ibrahim NK. Effects of systemic therapy and local therapy on outcomes of 873 breast cancer patients with metastatic breast cancer to brain: MD Anderson Cancer Center experience. Int J Cancer 2021; 148:961-970. [PMID: 32748402 DOI: 10.1002/ijc.33243] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 12/14/2022]
Abstract
Outcomes of treatments for patients with breast cancer brain metastasis (BCBM) remain suboptimal, especially for systemic therapy. To evaluate the effectiveness of systemic and local therapy (surgery [S], stereotactic radiosurgery [SRS] and whole brain radiotherapy [WBRT]) in BCBM patients, we analyzed the data of 873 BCBM patients from 1999 to 2012. The median overall survival (OS) and time to progression in the brain (TTP-b) after diagnosis of brain metastases (BM) were 9.1 and 7.1 months, respectively. WBRT prolonged OS in patients with multiple BM (hazard ratio [HR], 0.68; 95% CI, 0.52-0.88; P = .004). SRS alone, and surgery or SRS followed by WBRT (S/SRS + WBRT), were equivalent in OS and TTP-b (median OS, 14.9 vs 17.2 months; median TTP-b, 8.2 vs 8.6 months). Continued chemotherapy prolonged OS (HR, 0.35; 95% CI, 0.30-0.41; P < .001) and TTP-b (HR, 0.48; 95% CI, 0.33-0.70; P < .001), however, with no advantage of capecitabine over other chemotherapy agents used (median OS, 11.8 vs 12.4 months; median TTP-b, 7.2 vs 7.4 months). Patients receiving trastuzumab at diagnosis of BM, continuation of anti-HER2 therapy increased OS (HR, 0.53; 95% CI, 0.34-0.83; P = .005) and TTP-b (HR, 0.41; 95% CI, 0.23-0.74; P = .003); no additional benefit was seen with switching over between trastuzumab and lapatinib (median OS, 18.4 vs 22.7 months; median TTP-b: 7.4 vs 8.7 months). In conclusion, SRS or S/SRS + WBRT were equivalent for patients' OS and local control. Continuation systemic chemotherapy including anti-HER2 therapy improved OS and TTP-b with no demonstrable advantage of capecitabine and lapatinib over other agents of physicians' choice was observed.
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Affiliation(s)
- Chao Gao
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
- Department of Radiation Oncology, The Fourth Hospital of Hebei Medical University, Hebei Medical University, Shijiazhuang, China
| | - Fuchenchu Wang
- Department of Biostatistics, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Dima Suki
- Department of Neurosurgery, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Eric Strom
- Department of Radiation Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Jing Li
- Department of Radiation Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Raymond Sawaya
- Department of Neurosurgery, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Limin Hsu
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Akshara Raghavendra
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Debu Tripathy
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
| | - Nuhad K Ibrahim
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, Texas, USA
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19
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Nguy S, Wu SP, Oh C, Gerber NK. Outcomes of HER2-positive non-metastatic breast cancer patients treated with anti-HER2 therapy without chemotherapy. Breast Cancer Res Treat 2021; 187:815-830. [PMID: 33590386 DOI: 10.1007/s10549-021-06115-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/21/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE Anti-HER2 therapy delivered in the adjuvant setting for breast cancer is given in conjunction with cytotoxic chemotherapy. For HER2-positive (HER2+) patients who cannot tolerate chemotherapy, there is no randomized data regarding the role of anti-HER2 therapy without chemotherapy. METHODS The National Cancer Database (NCDB) was queried for non-metastatic breast cancer patients with estrogen receptor-positive (ER+) and HER2+ breast cancer who received surgery and endocrine therapy, without chemotherapy from 2013 to 2016. Outcomes were compared between endocrine therapy alone (ET) or endocrine therapy with anti-HER2 therapy (ET + aHER2). Univariate and multivariate Cox-proportional hazards models were used to analyze the association between clinical characteristics and survival outcomes between groups. Propensity score matching (PSM) was performed to account for differences between the two groups. RESULTS Of all patients with non-metastatic ER+/HER2+ breast cancer, we identified 9458 (20.5%) who did not receive chemotherapy. Of the 6741 patients who received ET, 17.2% also received aHER2 therapy. Median follow-up was 31.7 months (IQR 21.1-42.1). In the aHER2 group (vs. ET), there were more patients with older age, higher stage, node positivity, poorly or undifferentiated disease, lymphovascular invasion, lobular cancer, and Medicare insurance. Compared to the ET cohort, ET + aHER2 was not significantly associated with improved OS on multivariate analysis (HR 0.88 95% CI 0.68-1.15) or after propensity score matching (HR 0.80 95% CI 0.57-1.11). CONCLUSIONS There is no significant difference in survival with the addition of HER2 therapy to endocrine therapy in ER+/HER2+ non-metastatic breast cancer patients who do not receive chemotherapy. To our knowledge, this is the largest series investigating this question.
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Affiliation(s)
- Susanna Nguy
- Department of Radiation Oncology, NYU Langone Health, New York, NY, USA
| | - S Peter Wu
- Division of Biostastistics, NYU Langone Health, New York, NY, USA
| | | | - Naamit K Gerber
- Department of Radiation Oncology, NYU Langone Health, New York, NY, USA.
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Tarantino P, Prat A, Cortes J, Cardoso F, Curigliano G. Third-line treatment of HER2-positive advanced breast cancer: From no standard to a Pandora's box. Biochim Biophys Acta Rev Cancer 2020; 1875:188487. [PMID: 33259892 DOI: 10.1016/j.bbcan.2020.188487] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/10/2020] [Accepted: 11/21/2020] [Indexed: 12/22/2022]
Abstract
Human epidermal growth factor receptor 2 positive (HER2+) advanced breast cancer (ABC) accounts for about 15-20% of all ABC cases. Large randomized trials have determined the standard first- and second-line treatments for this subgroup of patients, namely dual blockade plus chemotherapy and TDM1. However, no standard treatment is specifically recommended after TDM1, and most of the subsequent therapeutic choices commonly rely on old trials not optimally reflecting the current patient population. The recent FDA-approval of three novel anti-HER2 compounds is revolutionizing the field. In particular, trastuzumab deruxtecan was approved after showing unprecedented activity in a phase 2 trial for highly pretreated HER2+ ABC patients; tucatinib and neratinib were approved based on the results of the randomized HER2CLIMB and NALA trial, respectively. With an increasing arsenal of treatment options, clinical decision-making will need to take into account a variety of aspects, including differences in clinical trial designs, outcomes and toxicity profile of each drug, patient's characteristics and preferences.
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Affiliation(s)
- Paolo Tarantino
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, Milan, Italy; Department of Oncology and Hematology, University of Milan, Milan, Italy
| | - Aleix Prat
- Translational Genomics and Targeted Therapies, IDIBAPS, Barcelona, Spain; University of Barcelona, Barcelona, Spain; Department of Medical Oncology, Hospital Clinic, Barcelona, Spain
| | - Javier Cortes
- IOB Institute of Oncology, Quiron group, Madrid, Barcelona, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Fatima Cardoso
- Breast Unit Champalimaud Clinical Center/Champalimaud Foundation, Lisbon, Portugal
| | - Giuseppe Curigliano
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, Milan, Italy; Department of Oncology and Hematology, University of Milan, Milan, Italy.
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21
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Ethier SP, Guest ST, Garrett-Mayer E, Armeson K, Wilson RC, Duchinski K, Couch D, Gray JW, Kappler C. Development and implementation of the SUM breast cancer cell line functional genomics knowledge base. NPJ Breast Cancer 2020; 6:30. [PMID: 32715085 PMCID: PMC7374090 DOI: 10.1038/s41523-020-0173-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 06/23/2020] [Indexed: 12/24/2022] Open
Abstract
Several years ago, the SUM panel of human breast cancer cell lines was developed, and these cell lines have been distributed to hundreds of labs worldwide. Our lab and others have developed extensive omics data sets from these cells. More recently, we performed genome-scale shRNA essentiality screens on the entire SUM line panel, as well as on MCF10A cells, MCF-7 cells, and MCF-7LTED cells. These gene essentiality data sets allowed us to perform orthogonal analyses that functionalize the otherwise descriptive genomic data obtained from traditional genomics platforms. To make these omics data sets available to users of the SUM lines, and to allow users to mine these data sets, we developed the SUM Breast Cancer Cell Line Knowledge Base. This knowledge base provides information on the derivation of each cell line, provides protocols for the proper maintenance of the cells, and provides a series of data mining tools that allow rapid identification of the oncogene signatures for each line, the enrichment of KEGG pathways with screen hit and gene expression data, an analysis of protein and phospho-protein expression for the cell lines, as well as a gene search tool and a functional-druggable signature tool. Recently, we expanded our database to include genomic data for an additional 27 commonly used breast cancer cell lines. Thus, the SLKBase provides users with deep insights into the biology of human breast cancer cell lines that can be used to develop strategies for the reverse engineering of individual breast cancer cell lines.
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Affiliation(s)
- Stephen P Ethier
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC USA
| | - Stephen T Guest
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC USA
- Present Address: Department of Biomedical Informatics, University of Michigan Medical School, Ann Arbor, MI USA
| | - Elizabeth Garrett-Mayer
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC USA
- Present Address: American Society for Clinical Oncology, Charleston, SC USA
| | - Kent Armeson
- Biostatistics Core, Hollings Cancer Center, Charleston, SC USA
| | - Robert C Wilson
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC USA
| | - Kathryn Duchinski
- Department of Computer Science, The College of Charleston, Charleston, SC USA
- Present Address: Program in Bioinformatics and Integrative Genomics, Harvard University, Cambridge, MA USA
| | - Daniel Couch
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC USA
| | - Joe W Gray
- Department of Biomedical Engineering, Oregon Health and Sciences University, Portland, OR USA
| | - Christiana Kappler
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC USA
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22
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Alghafar DA, Younos I, Baimani KA, Al-Salhi D, Al-Riyami A, Rizvi S, Buckley NE. Trastuzumab cardiotoxicity in HER2-positive breast cancer patients in tertiary health care center, sultanate of Oman. J Oncol Pharm Pract 2020; 27:312-321. [PMID: 32340535 DOI: 10.1177/1078155220919888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Trastuzumab, a monoclonal antibody targeting the human epidermal growth factor receptor 2 (HER2), is used to treat breast cancers harboring amplification of the HER2 locus. Cardiotoxicity is a common side effect of trastuzumab that leads to discontinuation of treatment in a significant proportion of cancer patients. In our retrospective study, we evaluate the prevalence and identify the risk factors for cardiotoxicity associated with trastuzumab in HER2-positive breast cancer patients attending to Sultan Qaboos University Hospital between 10/2012 and 10/2017. Using patient records, we collected patients' characteristics (age, menopausal status, lymph nodal status, distant metastasis at presentation, grade of tumor, comorbidities (diabetes mellitus, hypertension, coronary artery disease diseases)), chemotherapy received and total dose of trastuzumab as well as cardiotoxicity (including timing). Cardiotoxicity was defined based on the ejection fraction dropping by 10% of the original value or a drop in the ejection fraction below the normal value. Among the 146 patients included in the study, 35 showed trastuzumab-induced cardiotoxicity (24%). Twenty-nine (83%) of those patients stopped trastuzumab temporarily. Risk of trastuzumab-induced cardiotoxicity was not altered by common cardiac risk factors such as history of coronary artery disease, hypertension and diabetes. Previous anthracyclines therapy exposure increased the risk of trastuzumab-induced cardiotoxicity significantly (p = 0.009). None of the other covariates influenced the incidence of trastuzumab-induced cardiotoxicity, which may be related to the relatively small sample size. Further studies are warranted to establish ways to predict, prevent, and treat trastuzumab-induced cardiotoxicity to provide patients with maximal therapeutic benefit.
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Affiliation(s)
- Doaa Abd Alghafar
- Pharmacy Department, Sultan Qaboos University Hospital, Seeb, Oman.,School of Pharmacy, Queens University, Belfast, Northern Ireland
| | - Ibrahim Younos
- Department of Clinical Pharmacology, College of Medicine, Menoufia University, Shibin Al Kawm, Egypt.,Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, Seeb, Oman
| | - Khalid Al Baimani
- Department of Medicine (Oncology Unit), Sultan Qaboos University Hospital, Seeb, Oman
| | - Dawood Al-Salhi
- Pharmacy Department, Sultan Qaboos University Hospital, Seeb, Oman
| | - Adil Al-Riyami
- Department of Medicine (Cardiology Unit), Sultan Qaboos University Hospital, Seeb, Oman
| | - Syed Rizvi
- Department of Family Medicine & Public Health, College of Medicine and Health Sciences, Sultan Qaboos University, Seeb, Oman
| | - Niamh E Buckley
- School of Pharmacy, Queens University, Belfast, Northern Ireland
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23
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Arab A, Yazdian-Robati R, Behravan J. HER2-Positive Breast Cancer Immunotherapy: A Focus on Vaccine Development. Arch Immunol Ther Exp (Warsz) 2020; 68:2. [PMID: 31915932 PMCID: PMC7223380 DOI: 10.1007/s00005-019-00566-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 12/16/2019] [Indexed: 02/07/2023]
Abstract
Clinical progress in the field of HER2-positive breast cancer therapy has been dramatically improved by understanding of the immune regulatory mechanisms of tumor microenvironment. Passive immunotherapy utilizing recombinant monoclonal antibodies (mAbs), particularly trastuzumab and pertuzumab has proved to be an effective strategy in HER2-positive breast cancer treatment. However, resistance to mAb therapy and relapse of disease are still considered important challenges in clinical practice. There are increasing reports on the induction of cellular and humoral immune responses in HER2-positive breast cancer patients. More recently, increasing efforts are focused on using HER2-derived peptide vaccines for active immunotherapy. Here, we discuss the development of various HER2-derived vaccines tested in animal models and human clinical trials. Different formulations and strategies to improve immunogenicity of the antigens in animal studies are also discussed. Furthermore, other immunotherapeutic approaches to HER2 breast cancer including, CTLA-4 inhibitors, immune checkpoint inhibitors, anti PD-1/PD-L1 antibodies are presented.
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Affiliation(s)
- Atefeh Arab
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Rezvan Yazdian-Robati
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Javad Behravan
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. .,School of Pharmacy, University of Waterloo, Waterloo, ON, Canada. .,Theraphage Inc., Kitchener, ON, Canada.
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24
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Coyne CP, Narayanan L. Carnosic Acid, Tangeretin, and Ginkgolide-B Anti-neoplastic Cytotoxicity in Dual Combination with Dexamethasone-[anti-EGFR] in Pulmonary Adenocarcinoma (A549). Anticancer Agents Med Chem 2019; 19:802-819. [DOI: 10.2174/1871520619666181204100226] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 06/06/2018] [Accepted: 10/08/2018] [Indexed: 12/18/2022]
Abstract
Background:Traditional chemotherapeutics of low-molecular weight diffuse passively across intact membrane structures of normal healthy cells found in tissues and organ systems in a non-specific unrestricted manner which largely accounts for the induction of most sequelae which restrict dosage, administration frequency, and duration of therapeutic intervention. Molecular strategies that offer enhanced levels of potency, greater efficacy and broader margins-of-safety include the discovery of alternative candidate therapeutics and development of methodologies capable of mediating properties of selective “targeted” delivery.Materials and Methods:The covalent immunopharmaceutical, dexamethasone-(C21-phosphoramidate)-[anti- EGFR] was synthesized utilizing organic chemistry reactions that comprised a multi-stage synthesis regimen. Multiple forms of analysis were implemented to vadliate the successful synthesis (UV spectrophotometric absorbance), purity and molar-incorporation-index (UV spectrophotometric absorbance, chemical-based protein determination), absence of fragmentation/polymerization (SDS-PAGE/chemiluminescent autoradiography), retained selective binding-avidity of IgG-immunoglobulin (cell-ELISA); and selectively “targeted” antineoplastic cytotoxicity (biochemistry-based cell vitality/viability assay).Results:The botanicals carnosic acid, ginkgolide-B and tangeretin, each individually exerted maximum antineoplastic cytotoxicity levels of 58.1%, 5.3%, and 41.1% respectively against pulmonary adenocarcinoma (A549) populations. Dexamethasone-(C21-phosphoramidate)-[anti-EGFR] formulated at corticosteroid/ glucocorticoid equivalent concentrations produced anti-neoplastic cytotoxicity at levels of 7.7% (10-9 M), 26.9% (10-8 M), 64.9% (10-7 M), 69.9% (10-6 M) and 73.0% (10-5 M). Ccarnosic acid, ginkgolide-B and tangeretin in simultaneous dual-combination with dexamethasone-(C21-phosphoramidate)-[anti-EGFR] exerted maximum anti-neoplastic cytotoxicity levels of 70.5%, 58.6%, and 69.7% respectively.Discussion:Carnosic acid, ginkgolide-B and tangeretin botanicals exerted anti-neoplastic cytotoxicity against pulmonary adenocarcinoma (A549) which additively contributed to the anti-neoplastic cytotoxic potency of the covalent immunopharmaceutical, dexamethasone-(C21-phosphoramidate)-[anti-EGFR]. Carnosic acid and tangeretin were most potent in this regard both individually and in dual-combination with dexamethasone-(C21- phosphoramidate)-[anti-EGFR]. Advantages and attributes of carnosic acid and tangeretin as potential monotherapeutics are a wider margin-of-safety of conventional chemotherapeutics which would readily complement the selective “targeted” delivery properties of dexamethasone-(C21-phosphoramidate)-[anti-EGFR] and possibly other covalent immunopharmaceuticals in addition to providing opportunities for the discovery of combination therapies that provide heightened levels of anti-neoplastic efficacy.
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Affiliation(s)
- Cody P. Coyne
- Department of Basic Sciences, College of Veterinary Medicine at Wise Center, Mississippi State University, Mississippi 39762, United States
| | - Lakshmi Narayanan
- Department of Basic Sciences, College of Veterinary Medicine at Wise Center, Mississippi State University, Mississippi 39762, United States
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25
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Migliavacca Zucchetti B, Nicolò E, Curigliano G. Biosimilars for breast cancer. Expert Opin Biol Ther 2019; 19:1015-1021. [DOI: 10.1080/14712598.2019.1638362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Bruna Migliavacca Zucchetti
- Division of Early Drug Development for Innovative Therapy, European Institute of Oncology IRCCS, Milan, Italy
- Hospital Sirio-Libanes, Sao Paulo, Brazil
| | - Eleonora Nicolò
- Division of Early Drug Development for Innovative Therapy, European Institute of Oncology IRCCS, Milan, Italy
- Department of Oncology and Hematology, University of Milano, Milan, Italy
| | - Giuseppe Curigliano
- Division of Early Drug Development for Innovative Therapy, European Institute of Oncology IRCCS, Milan, Italy
- Department of Oncology and Hematology, University of Milano, Milan, Italy
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26
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Miller D, Ingersoll MA, Lin MF. ErbB-2 signaling in advanced prostate cancer progression and potential therapy. Endocr Relat Cancer 2019; 26:R195-R209. [PMID: 31294537 PMCID: PMC6628717 DOI: 10.1530/erc-19-0009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Currently, prostate cancer (PCa) remains the most commonly diagnosed solid tumor and the second leading cause of cancer-related deaths in US men. Most of these deaths are attributed to the development of castration-resistant (CR) PCa. ErbB-2 and ErbB family members have been demonstrated to contribute to the progression of this lethal disease. In this review, we focus on updating the role of ErbB-2 in advanced PCa progression and its regulation, including its regulation via ligand activation, miRNAs and protein phosphorylation. We also discuss its downstream signaling pathways, including AKT, ERK1/2 and STATs, involved in advanced PCa progression. Additionally, we evaluate the potential of ErbB-2, focusing on its protein hyper-phosphorylation status, as a biomarker for aggressive PCa as well as the effectiveness of ErbB-2 as a target for the treatment of CR PCa via a multitude of approaches, including orally available inhibitors, intratumoral expression of cPAcP, vaccination and immunotherapy.
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Affiliation(s)
- Dannah Miller
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Matthew A. Ingersoll
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Ming-Fong Lin
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- Section of Urology, Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Corresponding Author: Ming-Fong Lin, Ph. D., Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA, TEL: (402) 559-6658, FAX: (402) 559-6650, (MFL)
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27
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Márquez-Garbán DC, Gorrín-Rivas M, Chen HW, Sterling C, Elashoff D, Hamilton N, Pietras RJ. Squalamine blocks tumor-associated angiogenesis and growth of human breast cancer cells with or without HER-2/neu overexpression. Cancer Lett 2019; 449:66-75. [PMID: 30771431 DOI: 10.1016/j.canlet.2019.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 01/07/2019] [Accepted: 02/10/2019] [Indexed: 12/22/2022]
Abstract
Angiogenesis is critical for breast cancer progression. Overexpression of HER-2/neu receptors occur in 25-30% of breast cancers, and treatment with trastuzumab inhibits HER-2-overexpressing tumor growth. Notably, HER-2-mediated signaling enhances vascular endothelial growth factor (VEGF) secretion to increase tumor-associated angiogenesis. Squalamine (aminosterol compound) suppresses VEGF-induced activation of kinases in vascular endothelial cells and inhibits tumor-associated angiogenesis. We assessed antitumor effects of squalamine either alone or with trastuzumab in nude mice bearing breast tumor xenografts without (MCF-7) or with HER2-overexpression (MCF-7/HER-2). Squalamine alone inhibited progression of MCF-7 tumors lacking HER2 overexpression, and squalamine combined with trastuzumab elicited marked inhibition of MCF-7/HER2 growth exceeding that of trastuzumab alone. MCF-7/HER-2 cells secrete higher levels of VEGF than MCF-7 cells, but squalamine elicited no growth inhibition of either MCF-7/HER-2 or MCF-7 cells in vitro. However, squalamine did stop growth of human umbilical vein endothelial cells (HUVECs) and reduced VEGF-induced endothelial tube-like formations in vitro. These effects correlated with blockade of focal adhesion kinase phosphorylation and stress fiber assembly in HUVECs. Thus, squalamine effectively inhibits growth of breast cancers with or without HER-2-overexpression, an effect due in part to blockade of tumor-associated angiogenesis.
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Affiliation(s)
- Diana C Márquez-Garbán
- Department of Medicine, Division of Hematology-Oncology, UCLA David Geffen School of Medicine, Los Angeles, CA, 90095, USA; UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA.
| | - Manuel Gorrín-Rivas
- Department of Medicine, Division of Hematology-Oncology, UCLA David Geffen School of Medicine, Los Angeles, CA, 90095, USA; UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA.
| | - Hsiao-Wang Chen
- Department of Medicine, Division of Hematology-Oncology, UCLA David Geffen School of Medicine, Los Angeles, CA, 90095, USA; UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA.
| | - Colin Sterling
- Department of Medicine, Division of Hematology-Oncology, UCLA David Geffen School of Medicine, Los Angeles, CA, 90095, USA; UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA
| | - David Elashoff
- UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA; Department of Medicine, Division of General Internal Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA 90095, USA.
| | - Nalo Hamilton
- UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA; UCLA School of Nursing, Los Angeles, CA, 90095, USA.
| | - Richard J Pietras
- Department of Medicine, Division of Hematology-Oncology, UCLA David Geffen School of Medicine, Los Angeles, CA, 90095, USA; UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, 90095, USA.
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28
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Nami B, Maadi H, Wang Z. Mechanisms Underlying the Action and Synergism of Trastuzumab and Pertuzumab in Targeting HER2-Positive Breast Cancer. Cancers (Basel) 2018; 10:cancers10100342. [PMID: 30241301 PMCID: PMC6210751 DOI: 10.3390/cancers10100342] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/13/2018] [Accepted: 09/18/2018] [Indexed: 02/08/2023] Open
Abstract
Human epidermal growth factor receptor (HER) 2 (HER2) is overexpressed in 20⁻30% of breast cancers. HER2 is a preferred target for treating HER2-positive breast cancer. Trastuzumab and pertuzumab are two HER2-targeted monoclonal antibodies approved by the Food and Drug Administration (FDA) to use as adjuvant therapy in combination with docetaxel to treat metastatic HER2-positive breast cancer. Adding the monoclonal antibodies to treatment regimen has changed the paradigm for treatment of HER2-positive breast cancer. Despite improving outcomes, the percentage of the patients who benefit from the treatment is still low. Continued research and development of novel agents and strategies of drug combinations is needed. A thorough understanding of the molecular mechanisms underlying the action and synergism of trastuzumab and pertuzumab is essential for moving forward to achieve high efficacy in treating HER2-positive breast cancer. This review examined and analyzed findings and hypotheses regarding the action and synergism of trastuzumab and pertuzumab and proposed a model of synergism based on available information.
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Affiliation(s)
- Babak Nami
- Signal Transduction Research Group, Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada.
| | - Hamid Maadi
- Signal Transduction Research Group, Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada.
| | - Zhixiang Wang
- Signal Transduction Research Group, Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada.
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29
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Coyne CP, Narayanan L. Anti-neoplastic cytotoxicity by complementary simultaneous selective “targeted” delivery for pulmonary adenocarcinoma: fludarabine-(5′-phosphoramidate)-[anti-IGF-1R] in dual-combination with dexamethasone-(C21-phosphoramidate)-[anti-EGFR]. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2018. [DOI: 10.1007/s40005-018-0401-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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30
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Farhadihosseinabadi B, Hosseini F, Larki P, Bagheri N, Abbaszadeh-Goudarzi K, Sinehsepehr K, Johari B, Abdollahpour-Alitappeh M. Breast Cancer: Risk Factors, Diagnosis and Management. MEDICAL LABORATORY JOURNAL 2018. [DOI: 10.29252/mlj.12.5.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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31
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Affiliation(s)
- Flavia Longo
- Oncologia Medica Policlinico “Umberto I”, Roma Giovanni Mansueto, UOC Oncologia Medica, ASL Frosinone
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32
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Collovà E, Ferzi A, Scandurra G, Aurilio G, Torri V, Porcu L, Sanò MV, Taibi E, Foglietta J, Generali D, Andreis D, Dazzani MC, Bramati A, Marcon I, Atzori F, Cinieri S, Tondulli L, Grasso D, Nolè F, Petrella MC, Gori S, La Verde N. Efficacy of Trastuzumab in Unselected Patients with HER2-Positive Metastatic Breast Cancer: A Retrospective Analysis. TUMORI JOURNAL 2018. [DOI: 10.1177/1636.17902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Elena Collovà
- Ospedale Civile di Legnano, Department of Oncology, Legnano, Milan
| | - Antonella Ferzi
- Ospedale Civile di Legnano, Department of Oncology, Legnano, Milan
| | | | - Gaetano Aurilio
- European Institute of Oncology, Department of Oncology, Milan
| | - Valter Torri
- “Mario Negri” Institute, Laboratory of Methodology for Biomedical Research, Milan
| | - Luca Porcu
- “Mario Negri” Institute, Laboratory of Methodology for Biomedical Research, Milan
| | - Maria Vita Sanò
- Humanitas Centro Catanese di Oncologia, Department of Oncology, Catania
| | - Eleonora Taibi
- Humanitas Centro Catanese di Oncologia, Department of Oncology, Catania
| | - Jennifer Foglietta
- Azienda Ospedaliera Perugia, Department of Oncology, S. Andrea delle Fratte, Perugia
| | - Daniele Generali
- Istituti Ospitalieri di Cremona, Department of Mammarian Pathology, Cremona
| | - Daniele Andreis
- Istituti Ospitalieri di Cremona, Department of Mammarian Pathology, Cremona
| | | | - Annalisa Bramati
- Azienda Ospedaliera Fatebenefratelli e Oftalmico, Department of Oncology, Milan
| | - Ilaria Marcon
- Azienda Ospedaliera di Circolo e Fondazione Macchi, Department of Oncology, Varese
| | - Francesco Atzori
- University Hospital, Department of Oncology, bivio Sestu, Monserrato, Cagliari
| | - Saverio Cinieri
- Ospedale “A Perrino”, Department of Medical Oncology, Division & Breast Unit, Brindisi
| | | | - Donatella Grasso
- IRCC Policlinico San Matteo, Department of Hematology and Oncology, Pavia
| | - Franco Nolè
- European Institute of Oncology, Department of Oncology, Milan
| | | | - Stefania Gori
- Ospedale Sacro Cuore Don Calabria, Department of Oncology, Negrar (VR), Italy
| | - Nicla La Verde
- Azienda Ospedaliera Fatebenefratelli e Oftalmico, Department of Oncology, Milan
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33
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Maadi H, Nami B, Tong J, Li G, Wang Z. The effects of trastuzumab on HER2-mediated cell signaling in CHO cells expressing human HER2. BMC Cancer 2018; 18:238. [PMID: 29490608 PMCID: PMC5831215 DOI: 10.1186/s12885-018-4143-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 02/19/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Targeted therapy with trastuzumab has become a mainstay for HER2-positive breast cancer without a clear understanding of the mechanism of its action. While many mechanisms have been suggested for the action of trastuzumab, most of them are not substantiated by experimental data. It has been suggested that trastuzumab functions by inhibiting intracellular signaling initiated by HER2, however, the data are very controversial. A major issue is the different cellular background of various breast cancer cells lines used in these studies. Each breast cancer cell line has a unique expression profile of various HER receptors, which could significantly affect the effects of trastuzumab. METHODS To overcome this problem, in this research we adopted a cell model that allow us to specifically examine the effects of trastuzumab on a single HER receptor without the influence of other HER receptors. Three CHO cell lines stably expressing only human EGFR (CHO-EGFR), HER2 (CHO-K6), or HER3 (CHO-HER3) were used. Various methods including cytotoxicity assay, immunoblotting, indirect immunofluorescence, cross linking, and antibody-dependent cellular cytotoxicity (ADCC) were employed in this research. RESULTS We showed that trastuzumab did not bind EGFR and HER3, and thus did not affect the homodimerization and phosphorylation of EGFR and HER3. However, overexpression of HER2 in CHO cells, in the absence of other HER receptors, resulted in the homodimerization of HER2 and the phosphorylation of HER2 at all major pY residues. Trastuzumab bound to HER2 specifically and with high affinity. Trastuzumab inhibited neither the homodimerization of HER2, nor the phosphorylation of HER2 at most phosphotyrosine residues. Moreover, trastuzumab did not inhibit the phosphorylation of ERK and AKT in CHO-K6 cells, and did not inhibit the proliferation of CHO-K6 cells. However, trastuzumab induced strong ADCC in CHO-K6 cells. CONCLUSION We concluded that, in the absence of other HER receptors, trastuzumab exerts its antitumor activity through the induction of ADCC, rather than the inhibition of HER2-homodimerization and phosphorylation.
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Affiliation(s)
- Hamid Maadi
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Babak Nami
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Junfeng Tong
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Gina Li
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Zhixiang Wang
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada.
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34
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Zhou D, Ren K, Wang J, Ren H, Yang W, Wang W, Li Q, Liu X, Tang F. Erythropoietin-producing hepatocellular A6 overexpression is a novel biomarker of poor prognosis in patients with breast cancer. Oncol Lett 2018; 15:5257-5263. [PMID: 29552165 DOI: 10.3892/ol.2018.7919] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 12/15/2017] [Indexed: 01/09/2023] Open
Abstract
Erythropoietin-producing hepatocellular A6 (EphA6) is a member of the Eph receptor tyrosine kinase family, which has been implicated in tumorigenesis. However, little is known about the expression and function of EphA6 in breast cancer. The aim of the present study was to investigate the expression of EphA6 and the possible association between EphA6 and clinicopathological characteristics in breast cancer. In the present study, EphA6 mRNA expression was measured in 26 paired breast cancer tissues and adjacent non-cancerous tissues by reverse transcription-quantitative polymerase chain reaction. Additionally, the protein expression of EphA6 in breast cancer tissues from 116 patients was examined by immunohistochemistry, and the prognostic value for patients with breast cancer was evaluated. The results of the present study indicated that EphA6 mRNA and protein expression in breast cancer was significantly higher than that in adjacent non-cancerous tissues (P<0.001). EphA6 overexpression was significantly associated with a high histological grade (P<0.001), overexpression of human epidermal growth factor 2 (HER-2; P=0.0106), low estrogen receptor expression (P=0.0247) and low progesterone receptor expression (P=0.0015). Furthermore, the increased expression of EphA6 was demonstrated to be associated with breast cancer subtypes (P=0.0164). Kaplan-Meier curves demonstrated that high EphA6 expression was associated with lower overall survival rates in patients with breast cancer (P=0.015). Univariate and multivariate analysis revealed that high EphA6 expression, Tumor-Node-Metastasis classification and subtype were independent prognostic factors for patients with breast cancer (all P<0.05). In conclusion, EphA6 may serve an important role in breast carcinogenesis and may pose as a novel prognostic indicator and therapeutic target for breast cancer, particularly in patients with steroid receptor negative expression and HER-2 overexpression.
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Affiliation(s)
- Danmei Zhou
- Department of Pathology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Kehan Ren
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200030, P.R. China
| | - Jigang Wang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200030, P.R. China
| | - Hong Ren
- Department of Pathology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Wenlin Yang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200030, P.R. China
| | - Wenjuan Wang
- Department of Pathology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Qiong Li
- Department of Pathology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Xiuping Liu
- Department of Pathology, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai 200240, P.R. China
| | - Feng Tang
- Department of Pathology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
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35
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Udagawa C, Nakamura H, Ohnishi H, Tamura K, Shimoi T, Yoshida M, Yoshida T, Totoki Y, Shibata T, Zembutsu H. Whole exome sequencing to identify genetic markers for trastuzumab-induced cardiotoxicity. Cancer Sci 2018; 109:446-452. [PMID: 29247589 PMCID: PMC5797809 DOI: 10.1111/cas.13471] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/29/2017] [Accepted: 12/13/2017] [Indexed: 01/03/2023] Open
Abstract
Although trastuzumab‐induced cardiotoxicity is an important determinant to limit the use of this drug, the molecular mechanism of risk for this toxicity is not well understood. To identify genetic variants determining the risk of trastuzumab‐induced cardiotoxicity, we carried out whole exome sequencing of germline DNA samples from 9 patients with trastuzumab‐induced cardiotoxicity, and conducted a case‐control association study of 2258 genetic variants between 9 cases (with trastuzumab‐induced cardiotoxicity) and general Japanese population controls registered in the Human Genetic Variation Database (HGVD). The top variant which showed the lowest P‐value in the screening study was rs139503277 in PHD Finger Protein 3 (Pmin = .00012, odds ratio [OR] = 51.23). To further validate the result of screening study, we carried out a replication study of 10 variants showing Pmin < .001 in the screening study using 234 independent patients treated with trastuzumab, including 10 cases and 224 controls (without trastuzumab‐induced cardiotoxicity). In the replication study, we observed that three variants had an effect in the same direction as in the screening study (rs78272919 in exon 2 of Keratin 15, rs5762940 in exon 2 of zinc and ring finger 3, and rs139944387 in exon 44 of Eyes shut homologs [EYS]). A combined result of the screening and the replication studies suggested an association of a locus on chromosome 6q12 with trastuzumab‐induced cardiotoxicity (rs139944387 in EYS, combined Pmin = .00056, OR = 13.73). This finding provides new insights into personalized trastuzumab therapy for patients with human epidermal growth factor receptor 2 (HER2)‐positive cancer.
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Affiliation(s)
- Chihiro Udagawa
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan.,Pharmacogenomics Group, Project for Development of Liquid Biopsy Diagnosis, Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Hiromi Nakamura
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroshi Ohnishi
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan.,Pharmacogenomics Group, Project for Development of Liquid Biopsy Diagnosis, Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Kenji Tamura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Tatsunori Shimoi
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Masayuki Yoshida
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan
| | - Teruhiko Yoshida
- Fundamental Innovative Oncology Core, National Cancer Center Research Institute, Tokyo, Japan
| | - Yasushi Totoki
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Tatsuhiro Shibata
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Hitoshi Zembutsu
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan.,Pharmacogenomics Group, Project for Development of Liquid Biopsy Diagnosis, Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo, Japan
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Cavaco M, Goncalves J. Interactions Between Therapeutic Proteins and Small Molecules: The Shared Role of Perpetrators and Victims. Clin Pharmacol Ther 2017; 102:649-661. [PMID: 28002637 DOI: 10.1002/cpt.605] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 11/21/2016] [Accepted: 12/12/2016] [Indexed: 12/19/2022]
Abstract
Therapeutic proteins (TPs) are becoming increasingly important as therapeutic agents. A consequence of expanding their clinical indications is coadministration with well-established small-molecule drugs (sMDs), which could lead to unpredictable effects. According to the existing regulatory guidance, the development of an sMD includes the evaluation of potential drug-drug interactions (DDIs). For TPs, only a few drug interaction studies have been published. Limited clinically relevant models, long half-lives, and complex elimination pathways are among the associated difficulties.
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Affiliation(s)
- M Cavaco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - J Goncalves
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
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Coyne CP, Narayanan L. Gemcitabine-(5'-phosphoramidate)-[anti-IGF-1R]: molecular design, synthetic organic chemistry reactions, and antineoplastic cytotoxic potency in populations of pulmonary adenocarcinoma (A549). Chem Biol Drug Des 2017; 89:379-399. [PMID: 27561602 PMCID: PMC5396302 DOI: 10.1111/cbdd.12845] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 08/12/2016] [Accepted: 08/19/2016] [Indexed: 02/06/2023]
Abstract
One molecular-based approach that increases potency and reduces dose-limited sequela is the implementation of selective 'targeted' delivery strategies for conventional small molecular weight chemotherapeutic agents. Descriptions of the molecular design and organic chemistry reactions that are applicable for synthesis of covalent gemcitabine-monophosphate immunochemotherapeutics have to date not been reported. The covalent immunopharmaceutical, gemcitabine-(5'-phosphoramidate)-[anti-IGF-1R] was synthesized by reacting gemcitabine with a carbodiimide reagent to form a gemcitabine carbodiimide phosphate ester intermediate which was subsequently reacted with imidazole to create amine-reactive gemcitabine-(5'-phosphorylimidazolide) intermediate. Monoclonal anti-IGF-1R immunoglobulin was combined with gemcitabine-(5'-phosphorylimidazolide) resulting in the synthetic formation of gemcitabine-(5'-phosphoramidate)-[anti-IGF-1R]. The gemcitabine molar incorporation index for gemcitabine-(5'-phosphoramidate)-[anti-IGF-R1] was 2.67:1. Cytotoxicity Analysis - dramatic increases in antineoplastic cytotoxicity were observed at and between the gemcitabine-equivalent concentrations of 10-9 M and 10-7 M where lethal cancer cell death increased from 0.0% to a 93.1% maximum (100.% to 6.93% residual survival), respectively. Advantages of the organic chemistry reactions in the multistage synthesis scheme for gemcitabine-(5'-phosphoramidate)-[anti-IGF-1R] include their capacity to achieve high chemotherapeutic molar incorporation ratios; option of producing an amine-reactive chemotherapeutic intermediate that can be preserved for future synthesis applications; and non-dedicated organic chemistry reaction scheme that allows substitutions of either or both therapeutic moieties, and molecular delivery platforms.
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Affiliation(s)
- Cody P. Coyne
- Department of Basic SciencesCollege of Veterinary MedicineWise CenterMississippi State UniversityMississippi StateMSUSA
- College of Veterinary MedicineWise CenterMississippi State UniversityMississippi StateMSUSA
| | - Lakshmi Narayanan
- Department of Basic SciencesCollege of Veterinary MedicineWise CenterMississippi State UniversityMississippi StateMSUSA
- College of Veterinary MedicineWise CenterMississippi State UniversityMississippi StateMSUSA
- Present address: Fishery and Wildlife Research CenterMississippi State UniversityLocksley Way 201Mississippi StateMSUSA
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Chitgupi U, Qin Y, Lovell JF. Targeted Nanomaterials for Phototherapy. Nanotheranostics 2017; 1:38-58. [PMID: 29071178 PMCID: PMC5646723 DOI: 10.7150/ntno.17694] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 11/30/2016] [Indexed: 12/22/2022] Open
Abstract
Phototherapies involve the irradiation of target tissues with light. To further enhance selectivity and potency, numerous molecularly targeted photosensitizers and photoactive nanoparticles have been developed. Active targeting typically involves harnessing the affinity between a ligand and a cell surface receptor for improved accumulation in the targeted tissue. Targeting ligands including peptides, proteins, aptamers and small molecules have been explored for phototherapy. In this review, recent examples of targeted nanomaterials used in phototherapy are summarized.
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Affiliation(s)
| | | | - Jonathan F. Lovell
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, New York, USA
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Malecki M, Sabo C, Foorohar A, Tombokan X. Novel paradigm for immunotherapy of breast cancer by engaging prophylactic immunity against hepatitis B. Clin Transl Med 2016; 5:32. [PMID: 27539579 PMCID: PMC4990520 DOI: 10.1186/s40169-016-0111-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/26/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Immunotherapy of patients suffering from the human epidermal growth factor receptor 2 overexpressing (HER-2(+)) breast cancers with the anti-HER-2 antibodies results in increase of the patients' overall survival. However, no prophylactic vaccine is available against HER-2(+) breast cancers. Although, prophylactic vaccine for human hepatitis B virus (HBV) is very effective. SPECIFIC AIM The specific aim of this work was to design, synthesize, and test bio-molecules which would engage prophylactic immunity against hepatitis B virus towards killing breast cancers cells. METHODS AND RESULTS By biomolecular engineering, we have created a novel family of biomolecules: antibody (anti-HER-2) × vaccine (HBsAg) engineered constructs (AVEC: anti-HER-2 × HBsAg). These biomolecules were utilized for redirecting, accelerating, and amplifying of the vaccination-induced, prophylactic immunity originally targeted against HBV as therapeutic immunity, newly targeted against HER-2(+) breast cancers. Treatment of the HER-2(+) breast cancer cells with AVEC: anti-HER-2 × HBsAg in blood of the patients, vaccinated with HBsAg, rapidly increased efficacy of killing of HER-2(+) breast cancer cells over that attained with the naked anti-HER-2 antibodies. CONCLUSION Novel antibody-vaccine engineered constructs (AVEC) facilitate redirecting, accelerating, and amplifying of prophylactic, HBV vaccination-induced immunity as immunotherapy (RAAVIIT) of HER-2(+) breast cancer. We currently streamline this novel therapeutic paradigm into clinical trials of breast and other cancers.
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Affiliation(s)
- Marek Malecki
- Phoenix Biomolecular Engineering Foundation, San Francisco, CA USA
- University of Wisconsin, Madison, WI USA
- National Magnetic Resonance Facility, National Institutes of Health, Madison, WI USA
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Venetz D, Koovely D, Weder B, Neri D. Targeted Reconstitution of Cytokine Activity upon Antigen Binding using Split Cytokine Antibody Fusion Proteins. J Biol Chem 2016; 291:18139-47. [PMID: 27402834 PMCID: PMC5000063 DOI: 10.1074/jbc.m116.737734] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/28/2016] [Indexed: 01/05/2023] Open
Abstract
The targeted assembly of antibody products upon antigen binding represents a novel strategy for the reconstitution of potent therapeutic activity at the site of disease, sparing healthy tissues. We demonstrate that interleukin-12, a heterodimeric pro-inflammatory cytokine consisting of the disulfide-linked p40 and p35 subunits, can be reconstituted by sequential reassembly of fusion proteins based on antibody fragments and interleukin-12 subunit mutants. Analysis of the immunostimulatory properties of interleukin-12 and its derivatives surprisingly revealed that the mutated p35 subunit partially retained the activity of the parental cytokine, whereas the p40 subunit alone was not able to stimulate T cells or natural killer cells. The concept of stepwise antibody-based reassembly of split cytokines could be useful for the development of other anticancer therapeutics with improved safety and tolerability.
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Affiliation(s)
- Dario Venetz
- From the Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Danil Koovely
- From the Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Bruce Weder
- From the Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Dario Neri
- From the Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 1-5/10, CH-8093 Zürich, Switzerland
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Yang Y, Bu P. Progress on the cardiotoxicity of sunitinib: Prognostic significance, mechanism and protective therapies. Chem Biol Interact 2016; 257:125-31. [PMID: 27531228 DOI: 10.1016/j.cbi.2016.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 07/23/2016] [Accepted: 08/05/2016] [Indexed: 12/15/2022]
Abstract
Tyrosine kinase inhibitors (TKIs) are multi-targeted anti-cancer agents effective in the treatment of renal cell carcinoma (RCC), imatinib-resistant gastrointestinal stromal tumor (GIST) and pancreatic cancer (PC). Targeting and inhibiting a wide range of oncogenically relevant receptor tyrosine kinases (RTKs), TKIs have been the golden standard treatment of several types of cancer. The cardiotoxicity of TKIs, however, has also emerged alongside their anti-cancer potencies and has attracted research attention. Over the past few years significant progress has been made in developing a deeper understanding of aspects such as extent of cardiotoxicity, prognostic implications and survival predictions, toxicological mechanisms, and potential cardioprotective therapies. In this review we focus on a typical TKI sunitinib and summarize the up-to-date knowledge of sunitinib-induced cardiac abnormalities reported in clinical studies, weighing their implications of prognostic values. We also examine recent findings in underlying mechanisms, and development of potential cardioprotective agents.
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Affiliation(s)
- Yi Yang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Peili Bu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China.
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Coyne CP, Narayanan L. Dexamethasone-(C21-phosphoramide)-[anti-EGFR]: molecular design, synthetic organic chemistry reactions, and antineoplastic cytotoxic potency against pulmonary adenocarcinoma (A549). Drug Des Devel Ther 2016; 10:2575-97. [PMID: 27574398 PMCID: PMC4990379 DOI: 10.2147/dddt.s102075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
PURPOSE Corticosteroids are effective in the management of a variety of disease states, such as several forms of neoplasia (leukemia and lymphoma), autoimmune conditions, and severe inflammatory responses. Molecular strategies that selectively "target" delivery of corticosteroids minimize or prevents large amounts of the pharmaceutical moiety from passively diffusing into normal healthy cell populations residing within tissues and organ systems. MATERIALS AND METHODS The covalent immunopharmaceutical, dexamethasone-(C21-phosphoramide)-[anti-EGFR] was synthesized by reacting dexamethasone-21-monophosphate with a carbodiimide reagent to form a dexamethasone phosphate carbodiimide ester that was subsequently reacted with imidazole to create an amine-reactive dexamethasone-(C21-phosphorylimidazolide) intermediate. Monoclonal anti-EGFR immunoglobulin was combined with the amine-reactive dexamethasone-(C21-phosphorylimidazolide) intermediate, resulting in the synthesis of the covalent immunopharmaceutical, dexamethasone-(C21-phosphoramide)-[anti-EGFR]. Following spectrophotometric analysis and validation of retained epidermal growth factor receptor type 1 (EGFR)-binding avidity by cell-ELISA, the selective anti-neoplasic cytotoxic potency of dexamethasone-(C21-phosphoramide)-[anti-EGFR] was established by MTT-based vitality stain methodology using adherent monolayer populations of human pulmonary adenocarcinoma (A549) known to overexpress the tropic membrane receptors EGFR and insulin-like growth factor receptor type 1. RESULTS The dexamethasone:IgG molar-incorporation-index for dexamethasone-(C21-phosphoramide)-[anti-EGFR] was 6.95:1 following exhaustive serial microfiltration. Cytotoxicity analysis: covalent bonding of dexamethasone to monoclonal anti-EGFR immunoglobulin did not significantly modify the ex vivo antineoplastic cytotoxicity of dexamethasone against pulmonary adenocarcinoma at and between the standardized dexamethasone equivalent concentrations of 10(-9) M and 10(-5) M. Rapid increases in antineoplastic cytotoxicity were observed at and between the dexamethasone equivalent concentrations of 10(-9) M and 10(-7) M where cancer cell death increased from 7.7% to a maximum of 64.9% (92.3%-35.1% residual survival), respectively, which closely paralleled values for "free" noncovalently bound dexamethasone. DISCUSSION Organic chemistry reaction regimens were optimized to develop a multiphase synthesis regimen for dexamethasone-(C21-phosphoramide)-[anti-EGFR]. Attributes of dexamethasone-(C21-phosphoramide)-[anti-EGFR] include a high dexamethasone molar incorporation-index, lack of extraneous chemical group introduction, retained EGFR-binding avidity ("targeted" delivery properties), and potential to enhance long-term pharmaceutical moiety effectiveness.
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Affiliation(s)
| | - Lakshmi Narayanan
- Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, MS, USA
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Triulzi T, Bianchi GV, Tagliabue E. Predictive biomarkers in the treatment of HER2-positive breast cancer: an ongoing challenge. Future Oncol 2016; 12:1413-28. [DOI: 10.2217/fon-2015-0025] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The transmembrane tyrosine kinase receptor HER2 is overexpressed in 20% of invasive breast cancers and is associated with more aggressive disease. Until the advent of targeted agents, HER2 was associated with worse outcome. Trastuzumab, a recombinant humanized anti-HER2 monoclonal antibody, combined with chemotherapy improves disease-free and overall survival in both primary and metastatic tumors and represents a foundation of care for patients with HER2-positive breast cancers. However, a sizeable number of patients do not respond to this reagent, indicating the need for a biomarker able to recognize resistant tumors. Here, we review various studies on mechanisms of action and resistance to trastuzumab that have proven relevant in understanding how tumor care can be tailored to all HER2-positive patients.
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Affiliation(s)
- Tiziana Triulzi
- Molecular Targeting Unit, Department of Experimental Oncology & Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Giulia Valeria Bianchi
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Elda Tagliabue
- Molecular Targeting Unit, Department of Experimental Oncology & Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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Coyne CP, Narayanan L. Fludarabine- (C 2- methylhydroxyphosphoramide)- [anti-IGF-1R]: Synthesis and Selectively "Targeted"Anti-Neoplastic Cytotoxicity against Pulmonary Adenocarcinoma (A549). ACTA ACUST UNITED AC 2015; 4. [PMID: 26613088 DOI: 10.4172/2325-9604.1000129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Many if not most conventional small molecular weight chemotherapeutics are highly potent against many forms of neoplastic disease. Unfortunately, majority of an administered dose unintentionally diffuses passively into normal tissues and healthy organ systems following intravenous administration. One strategy for both increasing potency and reducing dose-limited sequela is the selective "targeted" delivery of conventional chemotherapeutic agents. MATERIALS AND METHODS The fludarabine-(C2- methylhydroxyphosphoramide)-[anti-IGF-1R] was synthesized by initially reacting fludarabine with a carbodiimide to form a fludarabine carbodiimide phosphate ester intermediate that was subsequently reacted with imidazole to create an amine-reactive fludarabine- (C2-phosphorylimidazolide) intermediate. Monoclonal anti-IGF-1R immunoglobulin was combined with the amine-reactive fludarabine- (C2-phosphorylimidazolide) intermediate resulting in the synthesis of covalent fludarabine-(C2-methylhydroxyphosphoramide)- [anti-IGF-1R] immunochemotherapeutic. Residual fludarabine and un-reacted reagents were removed by serial microfiltration (MWCO 10,000) and monitored by analytical-scale HP-TLC. Retained IGF-1R binding-avidity of fludarabine-(C2- methylhydroxyphosphoramide)-[anti-IGF-1R] was established by cell-ELISA using pulmonary adenocarcinoma cell (A549) which over-expresses IGF-1R and EGFR. Anti-neoplastic cytotoxic potency of fludarabine-(C2-methylhydroxyphosphoramide)-[anti- IGF-1R] was determined against pulmonary adenocarcinoma (A549) using an MTT-based vitality stain methodology. RESULTS The fludarabine molar-incorporation-index for fludarabine- (C2-methylhydroxyphosphoramide)-[anti-IGF-R1] was 3.67:1 while non-covalently bound fludarabine was not detected by analytical scale HP-TLC following serial micro-filtration. Size-separation fludarabine-(C2-methylhydroxyphosphoramide)-[anti- IGF-1R] by SDS-PAGE with chemo luminescent autoradiography detected only a single 150-kDa band. Cell-ELISA of fludarabine- (C2-methylhydroxyphosphoramide)-[anti-IGF-1R] measuring total immunoglobulin bound to exterior surface membranes of pulmonary adenocarcinoma (A549) increased with elevations in immunoglobulin-equivalent concentrations of the covalent fludarabine immunochemotherapeutic. Between the fludarabine-equivalent concentrations of 10-10 M and 10-5 M both fludarabine-(C2- methylhydroxyphosphoramide)-[anti-IGF-1R] and fludarabine had ex-vivo anti-neoplastic cytotoxic potency levels that increased rapidly between the fludarabine-equivalent concentrations of 10-6 M and 10-5 M where cancer cell death percentages increased from 24.4% to a maximum of 94.7% respectively. CONCLUSION The molecular design and organic chemistry reaction schemes were developed for synthesizing fludarabine-(C2- methylhydroxyphosphoramide)-[anti-IGF-1R] which possessed both properties of selective "targeted" delivery and anti-neoplastic cytotoxic potency equivalent to fludarabine chemotherapeutic.
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Affiliation(s)
- C P Coyne
- Department of Basic Sciences, College of Veterinary Medicine, Wise Center, Mississippi State University, Mississippi State, Mississippi, USA ; College of Veterinary Medicine, Mississippi State University, Mississippi, USA
| | - Lakshmi Narayanan
- Department of Basic Sciences, College of Veterinary Medicine, Wise Center, Mississippi State University, Mississippi State, Mississippi, USA
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Abstract
HER2 (ErbB2), a member of the HER family of tyrosine kinase receptors (HER1-4), is a major driver of tumor growth in 20% of breast cancers. Treatment with the anti-HER2 monoclonal antibody trastuzumab has revolutionized the outcome of patients with this aggressive breast cancer subtype, but intrinsic and acquired resistance is common. Growing understanding of the biology and complexity of the HER2 signaling network and of potential resistance mechanisms has guided the development of new HER2-targeted agents. Combinations of these drugs to more completely inhibit the HER receptor layer, or combining HER2-targeted agents with agents that target downstream signaling, alternative pathways, or components of the host immune system, are being vigorously investigated in the preclinical and clinical settings. As a result, the list of more effective and well tolerated FDA-approved new regimens for patients with HER2+ tumors is constantly growing.
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Affiliation(s)
- Mothaffar F Rimawi
- Lester and Sue Smith Breast Center and the Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas, 77030; , ,
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Peng Z, Liu Y, Li Y, Zhang X, Zhou J, Lu M, Li Q, Shen L. Serum HER2 extracellular domain as a potential alternative for tissue HER2 status in metastatic gastric cancer patients. Biomark Med 2015; 8:663-70. [PMID: 25123035 DOI: 10.2217/bmm.14.10] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
AIM We investigated whether serum concentrations of the HER2 extracellular domain (ECD) can be used as an alternative to test tissue HER2 status in metastatic gastric cancer. MATERIALS & METHODS A total of 133 cases of metastatic gastric cancer were included in present study. Serum HER2 ECD was measured by chemiluminescence immunoassay (CLIA). Receiver operating characteristic curve analysis was used to determine optimal serum HER2 ECD concentrations for differentiation between positive and negative HER2 status. RESULTS The median level of serum HER2 ECD was 9.6 ng/ml in metastatic gastric cancer patients. There was a significant relationship between serum and tissue levels of HER2 protein (p < 0.001). Area under the curve for serum HER2 ECD was 0.771 (95% CI: 0.682-0.860). CONCLUSION Levels of serum HER2 ECD are highly correlated with tissue HER2 status in metastatic gastric cancer. Serum HER2 ECD assay can be considered as a potential alternative for tissue HER2 status.
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Affiliation(s)
- Zhi Peng
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis & Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
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Golkar N, Tamaddon AM, Samani SM. Effect of lipid composition on incorporation of trastuzumab-PEG-lipid into nanoliposomes by post-insertion method: physicochemical and cellular characterization. J Liposome Res 2015; 26:113-25. [DOI: 10.3109/08982104.2015.1048692] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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48
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Tariq A, Majeed I, Khurshid A. Types of Cancers Prevailing in Pakistan and their Management Evaluation. Asian Pac J Cancer Prev 2015; 16:3605-16. [DOI: 10.7314/apjcp.2015.16.9.3605] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Coyne CP, Jones T, Bear R. Simultaneous Dual Selective Targeted Delivery of Two Covalent Gemcitabine Immunochemotherapeutics and Complementary Anti-Neoplastic Potency of [Se]-Methylselenocysteine. JOURNAL OF CANCER THERAPY 2015; 6:62-89. [PMID: 25821636 PMCID: PMC4376018 DOI: 10.4236/jct.2015.61009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The anti-metabolite chemotherapeutic, gemcitabine is relatively effective for a spectrum of neoplastic conditions that include various forms of leukemia and adenocarcinoma/carcinoma. Rapid systemic deamination of gemcitabine accounts for a brief plasma half-life but its sustained administration is often curtailed by sequelae and chemotherapeutic-resistance. A molecular strategy that diminishes these limitations is the molecular design and synthetic production of covalent gemcitabine immunochemotherapeutics that possess properties of selective "targeted" delivery. The simultaneous dual selective "targeted" delivery of gemcitabine at two separate sites on the external surface membrane of a single cancer cell types represents a therapeutic approach that can increase cytosol chemotherapeutic deposition; prolong chemotherapeutic plasma half-life (reduces administration frequency); minimize innocent exposure of normal tissues and healthy organ systems; and ultimately enhance more rapid and thorough resolution of neoplastic cell populations. MATERIALS AND METHODS A light-reactive gemcitabine intermediate synthesized utilizing succinimidyl 4,4-azipentanoate was covalently bound to anti-EGFR or anti-HER2/neu IgG by exposure to UV light (354-nm) resulting in the synthesis of covalent immunochemotherapeutics, gemcitabine-(C4-amide)-[anti-EGFR] and gemcitabine-(C4-amide)-[anti-HER2/neu]. Cytotoxic anti-neoplastic potency of gemcitabine-(C4-amide)-[anti-EGFR] and gemcitabine-(C4-amide)-[anti-HER2/neu] between gemcitabine-equivalent concentrations of 10-12 M and 10-6 M was determined utilizing chemotherapeutic-resistant mammary adenocarcinoma (SKRr-3). The organoselenium compound, [Se]-methylselenocysteine was evaluated to determine if it complemented the anti-neoplastic potency of the covalent gemcitabine immunochemotherapeutics. RESULTS Gemcitabine-(C4-amide)-[anti-EGFR], gemcitabine-(C4-amide)-[anti-HER2/neu] and the dual simultaneous combination of gemcitabine-(C4-amide)-[anti-EGFR] with gemcitabine-(C4-amide)-[anti-HER2/neu] all had anti-neoplastic cytotoxic potency against mammary adenocarcinoma. Gemcitabine-(C4-amide)-[anti-EGFR] and gemcitabine-(C4-amide)-[anti-HER2/neu] produced progressive increases in anti-neoplastic cytotoxicity that were greatest between gemcitabine-equivalent concentrations of 10-9 M and 10-6 M. Dual simultaneous combinations of gemcitabine-(C4-amide)-[anti-EGFR] with gemcitabine-(C4-amide)-[anti-HER2/neu] produced levels of anti-neoplastic cytotoxicity intermediate between each of the individual covalent gemcitabine immunochemotherapeutics. Total anti-neoplastic cytotoxicity of the dual simultaneous combination of gemcitabine-(C4-amide)-[anti-EGFR] and gemcitabine-(C4-amide)-[anti-HER2/neu] against chemotherapeutic-resistant mammary adenocarcinoma (SKBr-3) was substantially higher when formulated with [Se]-methylsele-nocysteine.
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Affiliation(s)
- C P Coyne
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, USA
| | - Toni Jones
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, USA
| | - Ryan Bear
- Wise Center, Mississippi State University, Mississippi State, USA
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Liu Y, Ling Y, Qi Q, Zhu M, Wan M, Zhang Y, Zhang C. Trastuzumab increases the sensitivity of HER2-amplified human gastric cancer cells to oxaliplatin and cisplatin by affecting the expression of telomere-associated proteins. Oncol Lett 2014; 9:999-1005. [PMID: 25624920 PMCID: PMC4301541 DOI: 10.3892/ol.2014.2793] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 11/21/2014] [Indexed: 01/17/2023] Open
Abstract
HER2 amplification occurs in ~20% of gastric cancer (GC) cases; however, in gastric and gastroesophageal junction cancer with HER2 gene amplification, trastuzumab in combination with cisplatin (DDP)-based chemotherapy has been reported to improve the oncological outcome. The aim of the present study was to evaluate the combined antitumor efficacy of trastuzumab and various platinum agents in GC cells and to elucidate mechanisms that may be involved in the interaction between trastuzumab and the platinum agents. The in vitro chemosensitivity of the GC cells to platinum agents was evaluated using the CellTiter 96® AQueous One Solution Cell Proliferation Assay kit. Treatment with 1.0μg/ml trastuzumab for 48 h significantly increased the sensitivity of NCI-N87 cells with HER2 amplification to oxaliplatin (Oxa) and DDP. This chemosensitivity was most prominent in the NCI-N87 cells, in which the half maximal inhibitory concentration of Oxa and DDP was decreased to ~3.29 and 6.91 times, respectively. The apoptotic effect of the platinum agents was evaluated by double-staining the GC cells with Annexin V-fluorescein isothiocyanate and propodium iodide. Consistent with the chemosensitivity analysis, apoptotic analysis indicated that trastuzumab significantly increased Oxa- and DDP-induced apoptosis in the NCI-N87 cells. Furthermore, the mRNA expression levels of various telomere-associated genes was determined by performing quantitative reverse transcription-polymerase chain reactions in a number of GC cell lines, and revealed that trastuzumab (alone and in combination with DDP) may downregulate the mRNA expression levels of the TPP1, TRF1, TRF2, TRF2IP and POT1 genes. However, western blot analysis demonstrated that trastuzumab (alone and in combination with DDP) may significantly downregulate the protein expression levels of telomeric repeat binding factor 2, protection of telomere 1 and TPP1 (formerly known as TINT1, PTOP and PIP). The results of the present study indicate a potential role of low-dose trastuzumab administration for increasing Oxa and DDP sensitivity in HER2-amplified GC cells, possibly via the downregulation of telomere-associated gene expression.
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Affiliation(s)
- Yongping Liu
- Clinical Oncology Laboratory, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China ; Department of Oncology Medicine, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
| | - Yang Ling
- Department of Oncology Medicine, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
| | - Qiufeng Qi
- Clinical Oncology Laboratory, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
| | - Ming Zhu
- Clinical Oncology Laboratory, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
| | - Meizhen Wan
- Department of Pathology, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
| | - Yaping Zhang
- Clinical Oncology Laboratory, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
| | - Changsong Zhang
- Clinical Oncology Laboratory, Changzhou Tumor Hospital Affiliated to Suzhou University, Changzhou, Jiangsu 213002, P.R. China
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