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Sahu A, Ahmad S, Imtiyaz K, Kizhakkeppurath Kumaran A, Islam M, Raza K, Easwaran M, Kurukkan Kunnath A, Rizvi MA, Verma S. In-silico and in-vitro study reveals ziprasidone as a potential aromatase inhibitor against breast carcinoma. Sci Rep 2023; 13:16545. [PMID: 37783782 PMCID: PMC10545834 DOI: 10.1038/s41598-023-43789-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/28/2023] [Indexed: 10/04/2023] Open
Abstract
Aromatase enzyme plays a fundamental role in the development of estrogen receptors, and due to this functionality, the enzyme has gained significant attention as a therapeutic for reproductive disorders and cancer diseases. The currently employed aromatase inhibitors have severe side effects whereas our novel aromatase inhibitor is more selective and less toxic, therefore has greater potential to be developed as a drug. The research framework of this study is to identify a potent inhibitor for the aromatase target by profiling molecular descriptors of the ligand and to find a functional pocket in the target by docking and MD simulations. For assessing cellular and metabolic activities as indicators of cell viability and cytotoxicity, in-vitro studies were performed by using the colorimetric MTT assay. Aromatase activities were determined by a fluorometric method. Cell morphology was assessed by phase-contrast light microscopy. Flow cytometry and Annexin V-FITC/PI staining assay determined cell cycle distribution and apoptosis. This study reports that CHEMBL708 (Ziprasidone) is the most promising compound that showed excellent aromatase inhibitory activity. By using better drug design methods and experimental studies, our study identified a novel compound that could be effective as a high-potential drug candidate against aromatase enzyme. We conclude that the compound ziprasidone effectively blocks the cell cycle at the G1-S phase and induces cancer cell death. Further, in-vivo studies are vital for developing ziprasidone as an anticancer agent. Lastly, our research outcomes based on the results of the in-silico experiments may pave the way for identifying effective drug candidates for therapeutic use in breast cancer.
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Affiliation(s)
- Ankita Sahu
- Tumour Biology Lab, ICMR-National Institute of Pathology, New Delhi, 110029, India
| | - Shaban Ahmad
- Department of Computer Science, Jamia Millia Islamia, New Delhi, 110025, India
| | - Khalid Imtiyaz
- Department of Bioscience, Jamia Millia Islamia, New Delhi, 110025, India
| | | | - Mojahidul Islam
- Molecular and Cellular Medicine, Institute of Liver and Biliary Sciences, New Delhi, 110070, India
| | - Khalid Raza
- Department of Computer Science, Jamia Millia Islamia, New Delhi, 110025, India.
| | - Murugesh Easwaran
- Nutritional Improvement of Crops, Plant Molecular Biology Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Asha Kurukkan Kunnath
- Mumbai Research Center, ICAR-Central Institute of Fisheries Technology, Navi Mumbai, 400703, India
| | - Moshahid A Rizvi
- Department of Bioscience, Jamia Millia Islamia, New Delhi, 110025, India
| | - Saurabh Verma
- Tumour Biology Lab, ICMR-National Institute of Pathology, New Delhi, 110029, India.
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Zheng Y, Zou J, Sun C, Peng F, Peng C. Ado-tratuzumab emtansine beyond breast cancer: therapeutic role of targeting other HER2-positive cancers. Front Mol Biosci 2023; 10:1165781. [PMID: 37251081 PMCID: PMC10210145 DOI: 10.3389/fmolb.2023.1165781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/21/2023] [Indexed: 05/31/2023] Open
Abstract
Ado-trastuzumab emtansine (T-DM1) is an antibody-drug conjugate approved by the FDA in 2013 for advanced HER2-positive breast cancer treatment exhibiting promising clinical benefits. However, HER2 overexpression and gene amplification have also been reported in other cancers like gastric cancer, non-small cell lung cancer (NSCLC), and colorectal cancer. Numerous preclinical studies have also revealed the significant antitumor effect of T-DM1 on HER2-positive tumors. With the advancement in research, several clinical trials have been conducted to investigate the antitumor effect of T-DM1. In this review, we briefly introduced the pharmacological effects of T-DM1. We reviewed its preclinical and clinical studies, especially on other HER2-positive cancers, establishing what has been encountered between its preclinical and clinical studies. In clinical studies, we found that T-DM1 has a therapeutic value on other cancers. An insignificant effect was observed on gastric cancer and NSCLC, inconsistent with the preclinical studies.
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Affiliation(s)
- Yang Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Jiayu Zou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Chen Sun
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Fu Peng
- Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
- Sichuan University, Chengdu, Sichuan, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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3
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Soosanabadi M, Ghahfarokhi AM, Pourghazi F, Ehtesham N, Mirfakhraie R, Atanesyan L, Keyhani E, Behjati F. Expression of ERBB gene family in females with breast cancer and its correlation with clinicopathological characteristics of the disease. Mol Biol Rep 2022; 49:8547-8553. [PMID: 35763181 DOI: 10.1007/s11033-022-07684-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/07/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Breast cancer (BC) is the most prevalent and fatal cancer in women. Given that there are very few studies investigating the overexpression of four members of ERBB genes, we decided to investigate the correlation between these four genes with clinicopathological characteristics in breast cancer cases. METHODS Tumoural tissue of 50 patients with sporadic invasive ductal BC was recruited. Also, control samples were provided from adjacent non-cancerous tissues (ANCTs) of the same patients. The expression of four ERBB genes was evaluated by real-time PCR and its correlation with clinicopathological characteristics was assessed. RESULTS Only ERBB2 (HER2) was overexpressed in tumoural tissue compared with ANCTs. Our data showed a significant relationship between ERBB1 overexpression with triple-negative tumors, ER, and PR negativity (P < 0.05). Also, ERBB2 overexpression indicated a significant correlation with several pathological characteristics such as age < 50, tumor size larger than 2 cm, early and advanced stages, negative involved lymph nodes, luminal B, triple-negative, ERBB2-enrich, estrogen receptor (ER) and progesterone receptor (PR) negative tumors, Ki-67 mutation more than 15%, and finally HER2/neu immunohistochemistry (IHC) positive and intermediate (P < 0.05). Moreover, this study demonstrated that ERBB4 overexpression had a significant correlation with tumor size smaller than 2 cm, grade I and II tumors (early-stage tumors), luminal A, ER and PR positive tumors, HER-2/neu IHC intermediate, and tumors that had a Ki-67 mutation lower than 15% (P < 0.05). Besides, our analysis showed a significant correlation between the expression of ERBB1 with ERBB2 and ERBB3 with ERBB4 (P < 0.05). CONCLUSIONS Our findings showed a significant relationship between unfavorable clinicopathological characteristics with ERBB1 and ERBB2 overexpression, but overexpression of ERBB4 was correlated with favorable outcomes.
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Affiliation(s)
- Mohsen Soosanabadi
- Department of Medical Genetics, Semnan University of Medical Sciences, Semnan, Iran
| | - Arezoo Mosharraf Ghahfarokhi
- Department of Cellular and Molecular Biology, Faculty of Life Sciences and Technology, Shahid Beheshti University, Tehran, Iran
| | - Farzad Pourghazi
- Faculty of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Naeim Ehtesham
- Department of Medical Genetics, Semnan University of Medical Sciences, Semnan, Iran
| | - Reza Mirfakhraie
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Elahe Keyhani
- Clinical Research Development Center of Rofeideh Rehabilitation Hospital, Tehran, Iran.
| | - Farkhondeh Behjati
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. .,Sarem Fertility & Infertility Research Center (SAFIR), Sarem Women's Hospital, Iran University of Medical Sciences (IUMS), Tehran, Iran. .,Sarem Cell Research Center (SCRC), Sarem Women's Hospital, Tehran, Iran.
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4
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Kolarov Bjelobrk I, Radic J, Trifunovic J, Pesic J, Vidovic V, Vranjkovic B, Petrovic N, Andrejic Visnjic B. The efficacy of lapatinib in patients with metastatic HER2 positive breast cancer who received prior therapy with monoclonal antibodies and antibody-drug conjugate: a single institutional experience. J Chemother 2021; 34:264-271. [PMID: 34844517 DOI: 10.1080/1120009x.2021.2009722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The choice of the anti-HER2 agent depends on country-specific availability, the specific, previously administered anti-HER2 therapy and the relapse-free interval, although there is not much published data on the use of lapatinib after progression on pertuzumab and/or T-DM1. The aim of this research is to determine efficacy of lapatinib in this setting. This research included 111 patients with metastatic HER2 positive breast cancer who received lapatinib with capecitabine at The Oncology Institute of Vojvodina. Lapatinib was given to 83 patients after trastuzumab without prior exposure to pertuzumab or T-DM1 while 28 patients received lapatinib after prior exposure to trastuzumab, pertuzumab and/or T-DM1. In order to determine efficacy of lapatinib in both groups, we measured progression free survival (PFS) and overall survival (OS), as well as by subsets: hormonal status (ER-positive and/or PR-positive tumours versus ER-negative and PR-negative tumours), the number of positive axillary lymph nodes (four or more positive axillary lymph nodes versus less than four positive axillary lymph nodes), marker of proliferation (Ki-67 ≥ 30 versus Ki-67 < 30), disease free interval (metastatic recurrence ≤ 1 year after initial diagnosis versus metastatic recurrence > 1 year after initial diagnosis or de novo metastatic disease. Median PFS was 5.6 months (95% CI 4.6-6.6) in the group of patients who received lapatinib after prior exposure to trastuzumab, pertuzumab and/or T-DM 1 and 7.4 months (95% CI 6.1-10.2) in the group of patients who received lapatinib after trastuzumab (HR, 0.79; 95% CI 0.61-0.98; P = 0.09). The patients with negative prognostic factors such as hormone receptor negativity, more than four positive axillary lymph nodes, marker of proliferation Ki 67 ≥ 30 and metastatic recurrence ≤ 1 year after initial diagnosis, had a similar PFS, regardless of receiving lapatinib after prior exposure to trastuzumab, pertuzumab and/or T-DM1 or without prior exposure. Median OS was 10.1 months (95% CI 8.6-NR) in the group that received lapatinib after exposure to trastuzumab, pertuzumab and/or T-DM1 and 16.3 months (95% CI 14.4-20.2) in the group of patients who received lapatinib after trastuzumab (HR, 0.76; 95% CI, 0.59-0.94; P = 0.04). Patients with negative prognostic factors such as hormone receptor negativity, more than four positive axillary lymph nodes and marker of proliferation Ki 67 ≥ 30, had no distinctly worse OS, regardless of receiving lapatinib after prior exposure to trastuzumab, pertuzumab and/or T-DM1 or without prior exposure. Lapatinib with capecitabine is an effective therapeutic option, especially in patients with negative prognostic factors, who have received prior chemotherapy, trastuzumab, pertuzumab, T-DM1 and remains an acceptable option for HER2 positive metastatic breast cancer until the novel drugs are approved in developing countries.
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Affiliation(s)
- Ivana Kolarov Bjelobrk
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Medical faculty, University of Novi Sad, Novi Sad, Serbia
| | - Jelena Radic
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Medical faculty, University of Novi Sad, Novi Sad, Serbia
| | - Jasna Trifunovic
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Medical faculty, University of Novi Sad, Novi Sad, Serbia
| | - Jasna Pesic
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Vladimir Vidovic
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Bojana Vranjkovic
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Nemanja Petrovic
- Department of Medical Oncology, Oncology Institute of Vojvodina, Sremska Kamenica, Serbia.,Medical faculty, University of Novi Sad, Novi Sad, Serbia
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Si Y, Zhang Y, Ngo HG, Guan JS, Chen K, Wang Q, Singh AP, Xu Y, Zhou L, Yang ES, Liu X(M. Targeted Liposomal Chemotherapies to Treat Triple-Negative Breast Cancer. Cancers (Basel) 2021; 13:cancers13153749. [PMID: 34359650 PMCID: PMC8345094 DOI: 10.3390/cancers13153749] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/23/2021] [Accepted: 07/24/2021] [Indexed: 02/08/2023] Open
Abstract
Simple Summary Triple-negative breast cancers (TNBCs) are mainly treated with standard chemotherapies. Combined therapies have been demonstrated as a promising treatment strategy in clinics. The aim of this study was to develop a new formulation of combined chemotherapies facilitated with a targeted delivery vehicle. We found that the mertansine and gemcitabine with different anti-cancer mechanisms resulted in high cytotoxicity in TNBC cells. The in vivo evaluations using two TNBC xenograft models confirmed the anti-tumor efficacy, i.e., significantly reduced tumor growth rate. Furthermore, the antibody-tagged liposomes effectively delivered the therapeutic drugs to TNBC tumor, which could reduce the side effects. This study is highly translational and the targeted liposomal drug formulation can be further investigated in future clinical trials for TNBC treatment. Abstract Triple-negative breast cancers (TNBCs) are highly aggressive and recurrent. Standard cytotoxic chemotherapies are currently the main treatment options, but their clinical efficacies are limited and patients usually suffer from severe side effects. The goal of this study was to develop and evaluate targeted liposomes-delivered combined chemotherapies to treat TNBCs. Specifically, the IC50 values of the microtubule polymerization inhibitor mertansine (DM1), mitotic spindle assembly defecting taxane (paclitaxel, PTX), DNA synthesis inhibitor gemcitabine (GC), and DNA damage inducer doxorubicin (AC) were tested in both TNBC MDA-MB-231 and MDA-MB-468 cells. Then we constructed the anti-epidermal growth factor receptor (EGFR) monoclonal antibody (mAb) tagged liposomes and confirmed its TNBC cell surface binding using flow cytometry, internalization with confocal laser scanning microscopy, and TNBC xenograft targeting in NSG female mice using In Vivo Imaging System. The safe dosage of anti-EGFR liposomal chemotherapies, i.e., <20% body weight change, was identified. Finally, the in vivo anti-tumor efficacy studies in TNBC cell line-derived xenograft and patient-derived xenograft models revealed that the targeted delivery of chemotherapies (mertansine and gemcitabine) can effectively inhibit tumor growth. This study demonstrated that the targeted liposomes enable the new formulations of combined therapies that improve anti-TNBC efficacy.
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Affiliation(s)
- Yingnan Si
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
| | - Ya Zhang
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
| | - Hanh Giai Ngo
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
| | - Jia-Shiung Guan
- Department of Medicine, University of Alabama at Birmingham, 703 19th Street South, Birmingham, AL 35294, USA; (J.-S.G.); (Y.X.)
| | - Kai Chen
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
| | - Qing Wang
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
| | - Ajeet Pal Singh
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
| | - Yuanxin Xu
- Department of Medicine, University of Alabama at Birmingham, 703 19th Street South, Birmingham, AL 35294, USA; (J.-S.G.); (Y.X.)
| | - Lufang Zhou
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
- Department of Medicine, University of Alabama at Birmingham, 703 19th Street South, Birmingham, AL 35294, USA; (J.-S.G.); (Y.X.)
| | - Eddy S. Yang
- Department of Radiation Oncology, University of Alabama at Birmingham, 1808 7th Avenue South, Birmingham, AL 35294, USA;
| | - Xiaoguang (Margaret) Liu
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1825 University Blvd, Birmingham, AL 35294, USA; (Y.S.); (Y.Z.); (H.G.N.); (K.C.); (Q.W.); (A.P.S.); (L.Z.)
- Correspondence:
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6
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Si Y, Xu Y, Guan J, Chen K, Kim S, Yang ES, Zhou L, Liu XM. Anti-EGFR antibody-drug conjugate for triple-negative breast cancer therapy. Eng Life Sci 2021; 21:37-44. [PMID: 33531889 PMCID: PMC7837297 DOI: 10.1002/elsc.202000027] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 12/13/2022] Open
Abstract
Triple-negative breast cancers (TNBCs) are highly aggressive, metastatic and recurrent. Cytotoxic chemotherapies with limited clinical benefits and severe side effects are the standard therapeutic strategies, but, to date, there is no efficacious targeted therapy. Literature and our data showed that epidermal growth factor receptor (EGFR) is overexpressed on TNBC cell surface and is a promising oncological target. The objective of this study was to develop an antibody-drug conjugate (ADC) to target EGFR+ TNBC and deliver high-potency drug. First, we constructed an ADC by conjugating anti-EGFR monoclonal antibody with mertansine which inhibits microtubule assembly via linker Sulfo-SMCC. Second, we confirmed the TNBC-targeting specificity of anti-EGFR ADC by evaluating its surface binding and internalization in MDA-MB-468 cells and targeting to TNBC xenograft in subcutaneous mouse mode. The live-cell and live-animal imaging with confocal laser scanning microscopy and In Vivo Imaging System (IVIS) confirmed the TNBC-targeting. Finally, both in vitro toxicity assay and in vivo anti-cancer efficacy study in TNBC xenograft models showed that the constructed ADC significantly inhibited TNBC growth, and the pharmacokinetics study indicated its high circulation stability. This study indicated that the anti-EGFR ADC has a great potential to against TNBC.
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Affiliation(s)
- Yingnan Si
- Department of Biomedical EngineeringUniversity of Alabama at Birmingham (UAB)BirminghamALUSA
| | - Yuanxin Xu
- Department of Biomedical EngineeringUniversity of Alabama at Birmingham (UAB)BirminghamALUSA
| | | | - Kai Chen
- Department of MedicineUABBirminghamALUSA
| | - Seulhee Kim
- Department of Biomedical EngineeringUniversity of Alabama at Birmingham (UAB)BirminghamALUSA
| | - Eddy S. Yang
- Department of Radiation OncologyO'Neal Comprehensive Cancer Center at UABBirminghamALUSA
| | | | - Xiaoguang Margaret Liu
- Department of Biomedical EngineeringUniversity of Alabama at Birmingham (UAB)BirminghamALUSA
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7
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Zhang H, Moisini I, Ajabnoor RM, Turner BM, Hicks DG. Applying the New Guidelines of HER2 Testing in Breast Cancer. Curr Oncol Rep 2020; 22:51. [PMID: 32346807 DOI: 10.1007/s11912-020-0901-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW The human epidermal growth factor receptor 2 (HER2) is an important prognostic and predictive biomarker in the breast cancer. The American Society of Clinical Oncology/College of American Pathology (ASCO/CAP) has published HER2 testing guidelines in breast cancer. We herein reviewed the HER2 testing guidelines in breast cancer with a focus on the application of the current guidelines. RECENT FINDINGS The continual investigation of HER2 testing in breast cancer has resulted in updates in the HER2 testing guidelines. The current guidelines focus on the uncommon clinical scenarios and emphasize the coordination between immunohistochemistry and in situ hybridization results, in an effort to improve clarity and accuracy. The ASCO/CAP guidelines provide valuable recommendations to ensure the accurate evaluation of HER2 status in breast cancer patients through standardization. Additional studies, particularly those with long-term outcome data are still needed to validate the guideline recommendations, especially the uncommon cases.
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Affiliation(s)
- Huina Zhang
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Ioana Moisini
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Rana M Ajabnoor
- Department of Pathology, Faculty of medicine, King Abdulaziz University, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Bradley M Turner
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - David G Hicks
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Box 626, Rochester, NY, 14642, USA.
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8
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Zhang H, Moisini I, Ajabnoor RM, Turner BM, D’aguiar M, Cai X, Gao S, Yang Q, Wang X, Schiffhauer L, Hicks DG. Frequency, Clinicopathologic Characteristics, and Follow-up of HER2-Positive Nonpleomorphic Invasive Lobular Carcinoma of the Breast. Am J Clin Pathol 2020; 153:583-592. [PMID: 31786600 DOI: 10.1093/ajcp/aqz194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES To investigate human epidermal growth factor receptor 2 (HER2)-positive nonpleomorphic invasive lobular carcinoma (ILC), which has rarely been addressed. METHODS Clinicopathologic characteristics and follow-up of HER2-positive nonpleomorphic ILCs were collected and compared to those of HER2-negative counterparts. RESULTS Twenty-one cases of HER2-positive nonpleomorphic ILCs were identified, 6.3% of the study population. Compared to HER2-negative nonpleomorphic ILC, patients with HER2 positivity were older (P < .05), likely to be hormonal receptor negative (P < .01), and had higher histologic grade and angiolymphatic invasion (P < .01). HER2 positivity in nonpleomorphic ILCs was associated with higher recurrence/metastasis with hazard ratio of 2.03 (P < .05). No patient who received neoadjuvant therapy achieved pathologic complete response, and HER2-targeted therapy tended to reduce recurrence/metastasis in patients with HER2-positive nonpleomorphic ILC. CONCLUSIONS Our results highlight the existence of HER2 positivity in nonpleomorphic ILCs and reinforce that HER2 is associated with worse prognosis in nonpleomorphic ILC.
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Affiliation(s)
- Huina Zhang
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Ioana Moisini
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Rana M Ajabnoor
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Bradley M Turner
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Marcus D’aguiar
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Xueya Cai
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY
| | - Shan Gao
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY
| | - Qi Yang
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Xi Wang
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
| | - Linda Schiffhauer
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY
| | - David G Hicks
- Department of Pathology, University of Rochester Medical Center, Rochester, NY
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9
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Richard S, Selle F, Lotz JP, Khalil A, Gligorov J, Soares DG. Pertuzumab and trastuzumab: the rationale way to synergy. AN ACAD BRAS CIENC 2018; 88 Suppl 1:565-77. [PMID: 27275646 DOI: 10.1590/0001-3765201620150178] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 05/05/2015] [Indexed: 02/03/2023] Open
Abstract
It has now been 15 years since the HER2-targeted monoclonal antibody trastuzumab was introduced in clinical and revolutionized the treatment of HER2-positive breast cancer patients. Despite this achievement, most patients with HER2-positive metastatic breast cancer still show progression of their disease, highlighting the need for new therapies. The continuous interest in novel targeted agents led to the development of pertuzumab, the first in a new class of agents, the HER dimerization inhibitors. Pertuzumab is a novel recombinant humanized antibody directed against extracellular domain II of HER2 protein that is required for the heterodimerization of HER2 with other HER receptors, leading to the activation of downstream signalling pathways. Pertuzumab combined with trastuzumab plus docetaxel was approved for the first-line treatment of patients with HER2-positive metastatic breast cancer and is currently used as a standard of care in this indication. In the neoadjuvant setting, the drug was granted FDA-accelerated approval in 2013. Pertuzumab is also being evaluated in the adjuvant setting. The potential of pertuzumab relies in the dual complete blockade of the HER2/3 axis when administered with trastuzumab. This paper synthetises preclinical and clinical data on pertuzumab and highlights the mechanisms underlying the synergistic activity of the combination pertuzumab-trastuzumab which are essentially due to their complementary mode of action.
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Affiliation(s)
- Sandrine Richard
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
| | - Frédéric Selle
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
| | - Jean-Pierre Lotz
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France.,Institut Universitaire de Cancérologie Université Pierre et Marie Curie (IUC-UPMC Univ Paris 06), Sorbonne Universités, 4 place Jussieu, 75005 Paris, France, Université Curie Paris 6, Institut Universitaire de Cancérologie, Université Pierre et Marie Curie, Paris , France
| | - Ahmed Khalil
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
| | - Joseph Gligorov
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France.,Institut Universitaire de Cancérologie Université Pierre et Marie Curie (IUC-UPMC Univ Paris 06), Sorbonne Universités, 4 place Jussieu, 75005 Paris, France, Université Curie Paris 6, Institut Universitaire de Cancérologie, Université Pierre et Marie Curie, Paris , France
| | - Daniele G Soares
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
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10
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Sarina N, Abeldenov S, Turgimbayeva A, Zhylkibayev A, Ramankulov Y, Khassenov B, Eskendirova S. Obtaining and characterization of monoclonal antibodies against recombinant extracellular domain of human epidermal growth factor receptor 2. Hum Antibodies 2018; 26:103-111. [PMID: 29036807 DOI: 10.3233/hab-170327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Human epidermal growth factor receptor 2 (HER2) is an important biomarker for detection and treatment of different types of cancers such as breast, ovarian, stomach cancer. In this study, we developed a monoclonal antibody against the extracellular domain (ECD) of HER2 biomarker of breast cancer. For this purpose, the ECD-HER2 gene was amplified and cloned into an expression vector. Gene was generated in Escherichia coli BL21 (DE3) strain for expression of recombinant protein. The expressed protein was separated by SDS-PAGE and detected by anti-his monoclonal antibody in immunoblotting. Hybridoma cells were obtained by fusing myeloma cells with mouse spleen cells injected with recombinant ECD-HER2 and screened by ELISA for the production of monoclonal antibody. The results indicate that out of three candidate hybridoma cells one clone (1E7) was producing the highest titer and antibody specificity was envisioned in ELISA results. In vivo scaling up culture of hybridoma cells in BALB/C mice lead to significant increase in the monoclonal antibody concentration up to 16 mg/ml. Immunochemical methods demonstrated the specificity of developed antibody against ECD-HER2 protein.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/biosynthesis
- Antibodies, Monoclonal/isolation & purification
- Antibodies, Monoclonal/pharmacology
- Antibody Specificity
- Antineoplastic Agents, Immunological/isolation & purification
- Antineoplastic Agents, Immunological/metabolism
- Antineoplastic Agents, Immunological/pharmacology
- Biomarkers, Tumor/antagonists & inhibitors
- Biomarkers, Tumor/chemistry
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/immunology
- Breast Neoplasms/drug therapy
- Breast Neoplasms/genetics
- Breast Neoplasms/immunology
- Breast Neoplasms/pathology
- Cell Fusion
- Cloning, Molecular
- Escherichia coli/genetics
- Escherichia coli/metabolism
- Female
- Gene Expression
- Genetic Vectors/chemistry
- Genetic Vectors/metabolism
- Humans
- Hybridomas/immunology
- Mice
- Mice, Inbred BALB C
- Models, Molecular
- Multiple Myeloma/immunology
- Protein Interaction Domains and Motifs
- Protein Structure, Secondary
- Receptor, ErbB-2/antagonists & inhibitors
- Receptor, ErbB-2/chemistry
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Sequence Alignment
- Spleen/cytology
- Spleen/immunology
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11
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Labib MB, Philoppes JN, Lamie PF, Ahmed ER. Azole-hydrazone derivatives: Design, synthesis, in vitro biological evaluation, dual EGFR/HER2 inhibitory activity, cell cycle analysis and molecular docking study as anticancer agents. Bioorg Chem 2018; 76:67-80. [DOI: 10.1016/j.bioorg.2017.10.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/21/2017] [Accepted: 10/24/2017] [Indexed: 11/29/2022]
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12
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Guo L, Abraham J, Flynn DC, Castranova V, Shi X, Qian Y. Individualized Survival and Treatment Response Predictions for Breast Cancers Using Phospho-EGFR, Phospho-ER, Phospho-HER2/neu, Phospho-IGF-IR/In, Phospho-MAPK, and Phospho-p70S6K Proteins. Int J Biol Markers 2018; 22:1-11. [PMID: 17393355 DOI: 10.1177/172460080702200101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The development and progression of breast cancer involves the activation of numerous protein kinases, and the change in phosphorylation is a hallmark of protein kinase activation. In this study, we identified a comprehensive profile to predict individual breast cancer patients’ survival and treatment responses using the Random Committee algorithm. The profile incorporated a subset of phosphorylated signal protein expressions and several selected clinical factors of breast cancer. The parameters of our profile were identified by supervised feature selection algorithms, Gain Ratio Attribute Evaluation and Relief. The results showed that the overall accuracy of survival prediction reached 92.3% for individual breast cancer patients with the use of the expression profiles of phospho-EGFR, phospho-ER, phospho-HER2/neu, phospho-IGF-IR/In, phospho-MAPK, and phospho-p70S6K plus the selected clinical factors. The results also indicated that the overall accuracy of treatment response prediction was 92.6% with the use of the level of phospho-EGFR, phospho-ER, phospho-HER2/neu, phospho-MAPK, and phospho-p70S6K plus the selected clinical information. The prediction system combines multiple signal protein activation profiles and relevant clinical information, and provides a unique guideline to aid individualized decision-making in the clinical management of breast cancer.
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Affiliation(s)
- L Guo
- MBR Cancer Center/Department of Community Medicine, West Virginia University, Morgantown, West Virginia 26505, USA.
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13
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Mapes J, Anandan L, Li Q, Neff A, Clevenger CV, Bagchi IC, Bagchi MK. Aberrantly high expression of the CUB and zona pellucida-like domain-containing protein 1 (CUZD1) in mammary epithelium leads to breast tumorigenesis. J Biol Chem 2018; 293:2850-2864. [PMID: 29321207 DOI: 10.1074/jbc.ra117.000162] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/21/2017] [Indexed: 12/13/2022] Open
Abstract
The peptide hormone prolactin (PRL) and certain members of the epidermal growth factor (EGF) family play central roles in mammary gland development and physiology, and their dysregulation has been implicated in mammary tumorigenesis. Our recent studies have revealed that the CUB and zona pellucida-like domain-containing protein 1 (CUZD1) is a critical factor for PRL-mediated activation of the transcription factor STAT5 in mouse mammary epithelium. Of note, CUZD1 controls production of a specific subset of the EGF family growth factors and consequent activation of their receptors. Here, we found that consistent with this finding, CUZD1 overexpression in non-transformed mammary epithelial HC11 cells increases their proliferation and induces tumorigenic characteristics in these cells. When introduced orthotopically in mouse mammary glands, these cells formed adenocarcinomas, exhibiting elevated levels of STAT5 phosphorylation and activation of the EGF signaling pathway. Selective blockade of STAT5 phosphorylation by pimozide, a small-molecule inhibitor, markedly reduced the production of the EGF family growth factors and inhibited PRL-induced tumor cell proliferation in vitro Pimozide administration to mice also suppressed CUZD1-driven mammary tumorigenesis in vivo Analysis of human MCF7 breast cancer cells indicated that CUZD1 controls the production of the same subset of EGF family members in these cells as in the mouse. Moreover, pimozide treatment reduced the proliferation of these cancer cells. Collectively, these findings indicate that overexpression of CUZD1, a regulator of growth factor pathways controlled by PRL and STAT5, promotes mammary tumorigenesis. Blockade of the STAT5 signaling pathway downstream of CUZD1 may offer a therapeutic strategy for managing these breast tumors.
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Affiliation(s)
| | | | - Quanxi Li
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801
| | - Alison Neff
- Department of Molecular and Integrative Physiology
| | - Charles V Clevenger
- Department of Pathology, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Indrani C Bagchi
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801
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14
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Abstract
Background: The management of patients with localized and advanced breast cancer continues to evolve. Chemotherapy, endocrine therapy, and trastuzumab are effective therapies but leave considerable room for improvement. As the cellular aberrations inherent to cancer cells in general and breast cancer cells specifically are better understood, therapies to target specific cellular pathways continue to be developed with the goal of expanding available effective therapy through better patient selection. Methods: We conducted a computerized search of the medical literature as well as a manual search of selected meeting abstracts. Results: Several targeted therapies are in phase III clinical trials testing their promise in the treatment of breast cancer. Many other agents are completing phase I and II testing. An overview of the most promising agents in clinical development is discussed herein. Conclusions: Targeted therapy for breast cancer is a reality at this time, and several new agents hold promise for expanding and refining the pool of patients likely to further benefit from this approach in the near future.
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Affiliation(s)
- Timothy J Hobday
- Department of Oncology, Mayo Clinic, Jacksonville, FL 32224, USA
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15
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Singh M, Venkata Krishnan H, Ranganathan S, Kiesel B, Beumer JH, Sreekumar S, Sant S. Controlled Three-Dimensional Tumor Microenvironments Recapitulate Phenotypic Features and Differential Drug Response in Early vs Advanced Stage Breast Cancer. ACS Biomater Sci Eng 2017; 4:421-431. [DOI: 10.1021/acsbiomaterials.7b00081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | | | | | - Brian Kiesel
- University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232, United States
| | - Jan Hendrik Beumer
- University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232, United States
- Division
of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, United States
| | - Sreeja Sreekumar
- Department
of Pharmacology and Chemical Biology, Women’s Cancer Research
Center, Magee-Women’s Research Institute, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232, United States
| | - Shilpa Sant
- University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232, United States
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16
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Molecular Biomarkers for Prediction of Targeted Therapy Response in Metastatic Breast Cancer: Trick or Treat? Int J Mol Sci 2017; 18:ijms18010085. [PMID: 28054957 PMCID: PMC5297719 DOI: 10.3390/ijms18010085] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 12/23/2016] [Accepted: 12/26/2016] [Indexed: 01/01/2023] Open
Abstract
In recent years, the study of genomic alterations and protein expression involved in the pathways of breast cancer carcinogenesis has provided an increasing number of targets for drugs development in the setting of metastatic breast cancer (i.e., trastuzumab, everolimus, palbociclib, etc.) significantly improving the prognosis of this disease. These drugs target specific molecular abnormalities that confer a survival advantage to cancer cells. On these bases, emerging evidence from clinical trials provided increasing proof that the genetic landscape of any tumor may dictate its sensitivity or resistance profile to specific agents and some studies have already showed that tumors treated with therapies matched with their molecular alterations obtain higher objective response rates and longer survival. Predictive molecular biomarkers may optimize the selection of effective therapies, thus reducing treatment costs and side effects. This review offers an overview of the main molecular pathways involved in breast carcinogenesis, the targeted therapies developed to inhibit these pathways, the principal mechanisms of resistance and, finally, the molecular biomarkers that, to date, are demonstrated in clinical trials to predict response/resistance to targeted treatments in metastatic breast cancer.
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17
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Rathi V, Wright G, Constantin D, Chang S, Pham H, Jones K, Palios A, Mclachlan SA, Conron M, McKelvie P, Williams R. Clinical validation of the 50 gene AmpliSeq Cancer Panel V2 for use on a next generation sequencing platform using formalin fixed, paraffin embedded and fine needle aspiration tumour specimens. Pathology 2016; 49:75-82. [PMID: 27913044 DOI: 10.1016/j.pathol.2016.08.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 08/28/2016] [Accepted: 08/30/2016] [Indexed: 12/14/2022]
Abstract
The advent of massively parallel sequencing has caused a paradigm shift in the ways cancer is treated, as personalised therapy becomes a reality. More and more laboratories are looking to introduce next generation sequencing (NGS) as a tool for mutational analysis, as this technology has many advantages compared to conventional platforms like Sanger sequencing. In Australia all massively parallel sequencing platforms are still considered in-house in vitro diagnostic tools by the National Association of Testing Authorities (NATA) and a comprehensive analytical validation of all assays, and not just mere verification, is a strict requirement before accreditation can be granted for clinical testing on these platforms. Analytical validation of assays on NGS platforms can prove to be extremely challenging for pathology laboratories. Although there are many affordable and easily accessible NGS instruments available, there are no standardised guidelines as yet for clinical validation of NGS assays. We present an accreditation development procedure that was both comprehensive and applicable in a setting of hospital laboratory for NGS services. This approach may also be applied to other NGS applications in service laboratories.
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Affiliation(s)
- Vivek Rathi
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia; Department of Pathology, The University of Melbourne, Australia.
| | - Gavin Wright
- Department of Surgery, St Vincent's Hospital, Fitzroy, Australia
| | - Diana Constantin
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
| | - Siok Chang
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
| | - Huong Pham
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
| | - Kerryn Jones
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
| | - Atha Palios
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
| | | | - Matthew Conron
- Department of Respiratory Medicine, St Vincent's Hospital, Fitzroy, Vic, Australia
| | - Penny McKelvie
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
| | - Richard Williams
- Department of Anatomical Pathology, St Vincent's Hospital Fitzroy, Australia
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18
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Zahmatkeshan M, Gheybi F, Rezayat SM, Jaafari MR. Improved drug delivery and therapeutic efficacy of PEgylated liposomal doxorubicin by targeting anti-HER2 peptide in murine breast tumor model. Eur J Pharm Sci 2016; 86:125-35. [PMID: 26972276 DOI: 10.1016/j.ejps.2016.03.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 02/29/2016] [Accepted: 03/09/2016] [Indexed: 12/14/2022]
Abstract
Targeted cancer therapy is a powerful therapeutic strategy to management of cancer. HER2 as an anticancer target has long been studied. Its overexpression plays an important role in the pathogenesis and progressiveness of breast and other cancers. To establish efficient and reliable drug delivery to HER2-overexpressing cells, the authors of this study have developed anti-HER2 (ErbB2) peptide-liposomal formulations of doxorubicin (DOX) by an engineered breast tumor-targeting peptide ligand, AHNP, Anti-HER2/neu peptide, (FCDGFYACYADV) with three glycine amino acids as spacer before its original sequencing. Towards this goal, PEGylated liposome doxorubicin (PLD) bearing different ligand densities of AHNP was prepared and characterized for their size, zeta potential and peptide conjugation. The AHNP functionalization and density effects on breast tumor cell uptake, selective cytotoxicity, prevention of tumor growth and the tissue biodistribution of encapsulated DOX were studied in mice bearing TUBO breast cancer tumor model. The findings demonstrated that increasing the ligand density of AHNP increases cytotoxicity and cell-uptake in SKBR3 and TUBO cells which overexpress HER2 but not in MDA-MB-231with low HER2 expression profile. The anticancer activity was also superior for targeted liposomal DOX with more AHNP densities. Overall, the results showed that optimum AHNP density functionalization of PLD can significantly improve selectivity and the therapeutic index of liposomal DOX in the treatment of HER2 positive breast cancer and merits further investigation.
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Affiliation(s)
- Masoumeh Zahmatkeshan
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 1417755469, Iran
| | - Fatemeh Gheybi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 1417755469, Iran
| | - Seyed Mahdi Rezayat
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 1417755469, Iran
| | - Mahmoud Reza Jaafari
- Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 91775-1365, Iran.
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19
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Suárez-Arroyo IJ, Rios-Fuller TJ, Feliz-Mosquea YR, Lacourt-Ventura M, Leal-Alviarez DJ, Maldonado-Martinez G, Cubano LA, Martínez-Montemayor MM. Ganoderma lucidum Combined with the EGFR Tyrosine Kinase Inhibitor, Erlotinib Synergize to Reduce Inflammatory Breast Cancer Progression. J Cancer 2016; 7:500-11. [PMID: 26958085 PMCID: PMC4780125 DOI: 10.7150/jca.13599] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 12/12/2015] [Indexed: 01/06/2023] Open
Abstract
The high incidence of resistance to Tyrosine Kinase Inhibitors (TKIs) targeted against EGFR and downstream pathways has increased the necessity to identify agents that may be combined with these therapies to provide a sustained response for breast cancer patients. Here, we investigate the therapeutic potential of Ganoderma lucidum extract (GLE) in breast cancer, focusing on the regulation of the EGFR signaling cascade when treated with the EGFR TKI, Erlotinib. SUM-149, or intrinsic Erlotinib resistant MDA-MB-231 cells, and a successfully developed Erlotinib resistant cell line, rSUM-149 were treated with increasing concentrations of Erlotinib, GLE, or their combination (Erlotinib/GLE) for 72h. Treatment effects were tested on cell viability, cell proliferation, cell migration and invasion. To determine tumor progression, severe combined immunodeficient mice were injected with SUM-149 cells and then treated with Erlotinib/GLE or Erlotinib for 13 weeks. We assessed the protein expression of ERK1/2 and AKT in in vitro and in vivo models. Our results show that GLE synergizes with Erlotinib to sensitize SUM-149 cells to drug treatment, and overcomes intrinsic and developed Erlotinib resistance. Also, Erlotinib/GLE decreases SUM-149 cell viability, proliferation, migration and invasion. GLE increases Erlotinib sensitivity by inactivating AKT and ERK signaling pathways in our models. We conclude that a combinatorial therapeutic approach may be the best way to increase prognosis in breast cancer patients with EGFR overexpressing tumors.
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Affiliation(s)
| | | | | | | | | | | | - Luis A Cubano
- 1. Universidad Central del Caribe-School of Medicine, Bayamón, P.R
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20
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WASF3 provides the conduit to facilitate invasion and metastasis in breast cancer cells through HER2/HER3 signaling. Oncogene 2016; 35:4633-40. [PMID: 26804171 PMCID: PMC4959990 DOI: 10.1038/onc.2015.527] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 12/08/2015] [Accepted: 12/11/2015] [Indexed: 12/29/2022]
Abstract
The WASF3 gene is overexpressed in high-grade breast cancer and promotes invasion and metastasis but does not affect proliferation. The HER2/ERBB2/NEU gene is also frequently overexpressed in breast cancer and has been shown to promote invasion and metastasis in these tumors. Here we show that WASF3 in present in the HER2 immunocomplex and suppression of WASF3 function leads to suppression of invasion even in the presence of HER2 expression. Overexpression of both HER2 and WASF3 in non-metastatic MCF7 breast cancer cells promotes invasion and metastasis more significantly than either gene alone. HER2 forms homodimers as well as heterodimers with other HER family members and we now show that the ability of WASF3 to promote invasion is highly dependent on the HER2/HER3 heterodimer. The engagement of WASF3 with the HER2/HER3 complex facilitates its phospho-activation and transcriptional upregulation, which is facilitated by HER2/HER3 activation of JAK/STAT signaling. In breast cancer cells overexpressing HER2, therefore, WASF3 is specifically required to facilitate the invasion/metastasis response. Targeting WASF3, therefore, could be a potential therapeutic approach to suppress metastasis of HER2-overexpressing breast tumors.
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21
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Tryfonidis K, Basaran G, Bogaerts J, Debled M, Dirix L, Thery JC, Tjan-Heijnen VCG, Van den Weyngaert D, Cufer T, Piccart M, Cameron D. A European Organisation for Research and Treatment of Cancer randomized, double-blind, placebo-controlled, multicentre phase II trial of anastrozole in combination with gefitinib or placebo in hormone receptor-positive advanced breast cancer (NCT00066378). Eur J Cancer 2015; 53:144-54. [PMID: 26724641 DOI: 10.1016/j.ejca.2015.10.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 10/02/2015] [Accepted: 10/15/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Preclinical data suggest that epidermal growth factor receptor (EGFR) inhibitors (e.g. gefitinib) can delay endocrine resistance in breast cancer. A double-blind, placebo-controlled, phase II trial investigated whether adding gefitinib (G) to anastrozole (A) would improve outcome in advanced breast cancer (ABC). METHODS Postmenopausal pre-treated hormone receptor-positive ABC patients (locally recurrent or metastatic) were 1:1 randomized to A (1 mg/d) plus G 250 mg/d or plus placebo (P). Patients who had prior treatment with an aromatase inhibitor in metastatic setting or with trastuzumab, anti-EGFR or anti-VEGF agents were excluded. Treatment was given until disease progression, unacceptable toxicity or patient withdrawal. Progression-free survival (PFS) rate at 1 year was assessed according to Response Evaluation Criteria in Solid Tumours, version 1.0. RESULTS Of 108 planned patients, 71 were recruited (36 in A/G and 35 in A/P). The trial closed prematurely due to slow recruitment; 31 patients had prior chemotherapy and 53 prior endocrine therapy (all except one received tamoxifen); 60% in adjuvant and 16% in metastatic setting received tamoxifen; 59 patients had visceral disease. Median follow-up was 18 months. PFS rate at 1 year was 35% for A/G and 32% for A/P arm. Objective responses were six (22%) in the A/G and nine (28%) in the A/P arm. Median duration of response was 13.8 and 18.6 months in the A/G and A/P arms, respectively. Fatigue (35%), diarrhoea (31%), rash (32%), dry skin (27%), and arthralgia/myalgia (27%) were the commonest adverse events in the A/G arm. CONCLUSIONS This phase II study, although prematurely closed, did not show a signal that adding G to A improves PFS at 1 year and its use is not supported. Gastrointestinal and skin toxicities were more pronounced with G resulting in premature therapy interruption in almost 1 in 3 patients (ClinicalTrials.gov number, NCT00066378).
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Affiliation(s)
| | - Gul Basaran
- Acıbadem Üniversitesi İç Hastalıkları/Tıbbi Onkoloji, Turkey.
| | - Jan Bogaerts
- EORTC-Headquarters, Statistical Department, Belgium.
| | | | - Luc Dirix
- GZA Sint Augustinus, Antwerp, Belgium.
| | | | | | | | | | - Martine Piccart
- Institute Jules Bordet, Universite Libre de Bruxelles, Brussels, Belgium.
| | - David Cameron
- NHS-Lothian, University of Edinburgh, Edinburgh, United Kingdom.
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22
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Gu Y, Chen C, Yi S, Wang S, Gong L, Liu J, Gu X, Zhao Q, Li S. miR-sc8 Inhibits Schwann Cell Proliferation and Migration by Targeting Egfr. PLoS One 2015; 10:e0145185. [PMID: 26683191 PMCID: PMC4686161 DOI: 10.1371/journal.pone.0145185] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/30/2015] [Indexed: 11/18/2022] Open
Abstract
MicroRNAs (miRNAs) negatively regulate the expression of target genes at the post-transcriptional level in diverse biological processes. We have previously identified a group of novel miRNAs in proximal nerve following rat sciatic nerve transection by Solexa sequencing. In this study, the biological function and action mode of miR-sc8, one of the above identified miRNAs, were investigated. An increased expression of miR-sc8 inhibited cell proliferation and migration of Schwann cells (SCs), and inversely, silencing of the miR-sc8 expression promoted cell proliferation and migration of SCs. The epidermal growth factor receptor (Egfr) was identified as the target gene of miR-sc8, which exerted negative regulation of Egfr by translational suppression. The temporal change profile of the miR-sc8 expression was negatively correlated with that of the Egfr expression in proximal nerve following sciatic nerve transection. Moreover, Knockdown of Egfr attenuated the promoting effects of miR-sc8 inhibitor on SC proliferation and migration. Overall, our data indicate that miR-sc8 affects phenotype modulation of SCs by targeting Egfr, providing further insights into the regulatory role of miRNAs in peripheral nerve regeneration.
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Affiliation(s)
- Yun Gu
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
| | - Chu Chen
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
| | - Sheng Yi
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
| | - Shanshan Wang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
| | - Leilei Gong
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
| | - Jie Liu
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
| | - Xiaosong Gu
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
| | - Qing Zhao
- Key Laboratory of the People’s Liberation Army, Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, P. R. China
- * E-mail: (QZ); (SL)
| | - Shiying Li
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, P. R. China
- * E-mail: (QZ); (SL)
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23
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Jacca S, Rolih V, Quaglino E, Franceschi V, Tebaldi G, Bolli E, Rosamilia A, Ottonello S, Cavallo F, Donofrio G. Bovine herpesvirus 4-based vector delivering a hybrid rat/human HER-2 oncoantigen efficiently protects mice from autochthonous Her-2 + mammary cancer. Oncoimmunology 2015; 5:e1082705. [PMID: 27141335 PMCID: PMC4839386 DOI: 10.1080/2162402x.2015.1082705] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 08/05/2015] [Accepted: 08/08/2015] [Indexed: 12/22/2022] Open
Abstract
The epidermal growth factor receptor 2 (HER-2) oncogene is a major target for the immunotherapy of breast cancer. Following up to the therapeutic success achieved with Her-2-targeting monoclonal antibodies, immune-prophylactic approaches directed against Her-2 have also been investigated taking into account, and trying to overcome, Her-2 self-tolerance. Perhaps due to safety (and efficacy) concerns, the least explored anti-Her-2 active immunization strategy so far has been the one relying on viral-vectored vaccine formulations. Taking advantage of the favorable properties of bovine herpesvirus 4 (BoHV-4) in terms of safety and ease of manipulation as well as its previously documented ability to transduce and confer immunogenicity to heterologous antigens, we tested the ability of different recombinant HER-2-BoHV-4 immunogens to 8break tolerance and elicit a protective, anti-mammary tumor antibody response in HER-2 transgenic BALB-neuT mice. All the tested constructs expressed the HER-2 transgenes at high levels and elicited significant cellular immune responses in BALB/c mice upon administration via either DNA vaccination or viral infection. In BALB-neuT mice, instead, only the viral construct expressing the membrane-bound chimeric form of Her-2 protein (BoHV-4-RHuT-gD) elicited a humoral immune response that was more intense and earlier-appearing than that induced by DNA vaccination. In keeping with this observation, two administrations of BoHV-4-RHuT-gD effectively protected BALB-neuT mice from tumor formation, with 50% of vaccinated animals tumor-free after 30 weeks from immunization compared to 100% of animals exhibiting at least one palpable tumor in the case of animals vaccinated with the other BoHV-4-HER-2 constructs.
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Affiliation(s)
- Sarah Jacca
- Department of Medical-Veterinary Science, University of Parma , Parma, Italy
| | - Valeria Rolih
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | - Elena Quaglino
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | | | - Giulia Tebaldi
- Department of Medical-Veterinary Science, University of Parma , Parma, Italy
| | - Elisabetta Bolli
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | - Alfonso Rosamilia
- Department of Medical-Veterinary Science, University of Parma , Parma, Italy
| | - Simone Ottonello
- Department of Life Sciences, Biochemistry and Molecular Biology Unit, University of Parma , Parma, Italy
| | - Federica Cavallo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | - Gaetano Donofrio
- Department of Medical-Veterinary Science, University of Parma , Parma, Italy
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Eroglu Z, Tagawa T, Somlo G. Human epidermal growth factor receptor family-targeted therapies in the treatment of HER2-overexpressing breast cancer. Oncologist 2014; 19:135-50. [PMID: 24436312 PMCID: PMC3926785 DOI: 10.1634/theoncologist.2013-0283] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/07/2013] [Indexed: 01/03/2023] Open
Abstract
Breast cancer characterized by overexpression of human epidermal growth factor receptor 2 (HER2) has been associated with more aggressive disease progression and a poorer prognosis. Although an improved understanding of breast cancer pathogenesis and the role of HER2 signaling has resulted in significant survival improvements in the past 20 years, resistance to HER2-targeted therapy remains a concern. A number of strategies to prevent or overcome resistance to HER2-targeted therapy in breast cancer are being evaluated. This article provides a comprehensive review of (a) the role of HER2 signaling in breast cancer pathogenesis, (b) potential receptor and downstream therapeutic targets in breast cancer to overcome resistance to HER2-targeted therapy, and (c) clinical trials evaluating agents targeting one or more members of the HER family and/or downstream pathways for the treatment of breast cancer, with a focus on metastatic disease.
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De Mattos-Arruda L, Cortes J. Use of pertuzumab for the treatment of HER2-positive metastatic breast cancer. Adv Ther 2013; 30:645-58. [PMID: 23881722 DOI: 10.1007/s12325-013-0043-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Targeting the human epidermal growth factor receptor (HER) family of tyrosine kinase receptors has proven to be effective as a therapeutic strategy for HER type 2 (HER2)-positive breast cancer. Since resistance to trastuzumab occurs relatively frequently, particularly in the metastatic setting, novel anti-HER2 targeted therapies with complementary and/or synergistic mechanisms of action have been under development. Pertuzumab, a HER2-targeted monoclonal antibody that prevents HER2 dimerisation, is the first of a class of promising targeted agents for the treatment of HER2-positive breast cancer. METHODS A review of the biomedical literature published prior to February 2013 was conducted in English using PubMed. ClinicalTrials.gov was searched for appropriate clinical trials. The search terms used included breast neoplasm, pertuzumab, dimerisation, and HER2-positive. Abstracts of studies presented at the ASCO and ESMO Annual Meetings, and San Antonio Breast Cancer Symposium were also included. RESULTS Pertuzumab represents a novel anti-HER2 targeted therapy for HER2-positive breast cancers. In this article, we describe the mechanism of action of pertuzumab, as well as its drug development process and preclinical testing results. Based on the results of ancillary studies, dual inhibition using pertuzumab and trastuzumab was shown to be effective for the management of HER2-positive metastatic breast cancers pre-treated with trastuzumab-based therapy. For the first-line setting, the combination of both pertuzumab and trastuzumab with docetaxel (CLEOPATRA trial; clinical evaluation of pertuzumab and trastuzumab) has changed the paradigm of patient management. CONCLUSION Pertuzumab provided a more comprehensive inhibition of HER2-driven signalling pathways. When administered together with trastuzumab, pertuzumab represent a significant advancement for the treatment of HER2-positive metastatic breast cancer patients.
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Golay J, Introna M. Mechanism of action of therapeutic monoclonal antibodies: Promises and pitfalls of in vitro and in vivo assays. Arch Biochem Biophys 2012; 526:146-53. [DOI: 10.1016/j.abb.2012.02.011] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 02/14/2012] [Accepted: 02/16/2012] [Indexed: 02/08/2023]
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Souka E, Alexiadis E, Theohari I, Giannopoulou I, Papadimitriou C, Nakopoulou L. Exon 8 amplification of epidermal growth factor receptor (EGFR) in invasive breast carcinomas. Histopathology 2012; 61:644-51. [DOI: 10.1111/j.1365-2559.2012.04315.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Waldron NN, Oh S, Vallera DA. Bispecific targeting of EGFR and uPAR in a mouse model of head and neck squamous cell carcinoma. Oral Oncol 2012; 48:1202-7. [PMID: 22818892 DOI: 10.1016/j.oraloncology.2012.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 05/25/2012] [Accepted: 06/01/2012] [Indexed: 01/17/2023]
Abstract
OBJECTIVES To investigate the efficacy of the bispecific targeted toxin, dEGFATFKDEL, on head and neck carcinoma cell lines in vitro and in vivo. MATERIALS AND METHODS A deimmunized bispecific anti-cancer agent was constructed to simultaneously target both the overexpressed EGF receptor on carcinomas and the urokinase receptor (uPAR), that is found on the endothelial cells of the neovasculature within tumors. Flow cytometry assays were performed to determine the level of EGFR expressed on a variety of carcinoma lines. These lines were then tested in tritiated leucine incorporation assays to determine the efficacy of dEGFATFKDEL. Human vein endothelial primary cells were also tested to determine the effectiveness of the ATF portion of the molecule that binds uPAR. Furthermore, mouse studies were performed to determine whether dEGFATFKDEL was effective at inhibiting tumor growth in vivo. RESULTS UMSCC-11B and NA, two head and neck squamous cell carcinomas, highly expressed EGFR. Both the carcinoma lines and the human vein endothelial cells were inhibited at sub-nanomolar concentrations by dEGFATFKDEL. The tumor studies showed that the tumors treated with dEGFATFKDEL were significantly inhibited whereas the negative control and untreated tumors progressed. In a separate in vivo study involving another carcinoma line, MDA-MB-231, the effectiveness of dEGFATFKDEL was confirmed. No toxicity was seen at the doses used in either of these mouse studies. CONCLUSIONS This bispecific agent is effective in a mouse model of head and neck squamous cell carcinoma. Further study of this reagent for use in the treatment of carcinomas is warranted.
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Affiliation(s)
- Nate N Waldron
- University of Minnesota, Department of Pharmacology, Minneapolis, MN 55455, USA
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Degrauwe N, Sosa JA, Roman S, Deshpande HA. Vandetanib for the treatment of metastatic medullary thyroid cancer. Clin Med Insights Oncol 2012; 6:243-52. [PMID: 22723734 PMCID: PMC3379848 DOI: 10.4137/cmo.s7999] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Medullary thyroid cancer (MTC) represents an aggressive form of thyroid malignancy. Some may occur spontaneously or can be associated with Multiple Endocrine Neoplasia syndromes, or Familial Medullary Thyroid Cancer syndrome. In these patients, the protooncogene RET (rearranged during transfection) is mutated. In patients who have unresectable or metastatic disease, the long term prognosis is poor. New treatments for this disease have focused on the use of targeted agents that inhibit the receptor tyrosine kinase of RET. One of these treatments, Vandetanib (Caprelsa, Astra Zeneca), recently has received approval from the Food and Drug Administration for the treatment of patients with progressive locally advanced and/or metastatic disease. This review highlights the studies that led to the drug's approval, and discusses on the potential financial costs of treatment and side effects of this therapy. The main clinical studies evaluating Vandetanib for the treatment of other solid tumors will also be reviewed.
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De Mattos-Arruda L, Cortes J. Advances in first-line treatment for patients with HER-2+ metastatic breast cancer. Oncologist 2012; 17:631-44. [PMID: 22523199 DOI: 10.1634/theoncologist.2011-0187] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND The prognosis for breast cancer patients overexpressing human epidermal growth factor receptor (HER)-2 has changed with anti-HER-2-targeted therapy. Although anti-HER-2 therapy with trastuzumab and chemotherapy is the standard first-line treatment, the best therapeutic regimen has yet to be defined, and new strategies are evolving. METHODS A literature review of well-established and recently published trials, reviews, and ongoing clinical trials addressing first-line treatment for HER-2(+) metastatic breast cancer patients was performed. RESULTS Taxanes are the agents most commonly used in combination with trastuzumab, but other chemotherapy drugs, such as anthracyclines, vinorelbine, and gemcitabine and triple-combination therapies including platinum compounds, capecitabine, and taxanes have been studied. The combination of aromatase inhibitors with anti-HER-2 therapies is a new therapeutic option for some patients who coexpress HER-2 and hormone receptors, although its activity observed in randomized clinical trials seems to be inferior to that of chemotherapy plus anti-HER-2 therapies. In addition, new anti-HER-2 therapies have shown activity in HER-2(+) tumors, both alone and in combination with trastuzumab. CONCLUSIONS Trastuzumab plus chemotherapy is the current standard of care for the upfront treatment of HER-2(+) breast cancer patients, though other anti-HER-2-targeting agents may appear as new standards in the upcoming years.
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Valdehita A, Carmena MJ, Bajo AM, Prieto JC. RNA interference-directed silencing of VPAC1 receptor inhibits VIP effects on both EGFR and HER2 transactivation and VEGF secretion in human breast cancer cells. Mol Cell Endocrinol 2012; 348:241-6. [PMID: 21896307 DOI: 10.1016/j.mce.2011.08.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 07/28/2011] [Accepted: 08/23/2011] [Indexed: 12/31/2022]
Abstract
We used small-interference RNA (siRNA) to explore the mechanisms of some vasoactive intestinal peptide (VIP) actions on human breast cancer cells. Transfection of estrogen-dependent (T47D) and estrogen-independent (MDA-MB-468) breast cancer cells with VPAC(1)-receptor siRNA completely abolished VIP stimulatory effect on secretion of the main angiogenic factor, vascular endothelial growth factor (VEGF), and transactivation of epidermal growth factor receptor (EGFR or HER1) and HER2, two members of HER family of tyrosine-kinase receptors. The silencing procedure suggested the involvement of EGFR and HER2 transactivation in VIP-stimulated VEGF secretion. It was further supported by blocking tyrosine kinase activity by the selective HER inhibitors AG-1478 (EGFR) and AG-825 (HER2). Results give value to the specific signaling of VIP through VPAC(1) receptor in human breast cancer cells and support the potential use of VPAC(1)-receptor antagonists in combined targeted therapies for breast cancer. Molecular therapies involving RNA interference of VPAC(1)-receptor expression could also be considered.
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Affiliation(s)
- Ana Valdehita
- Department of Biochemistry and Molecular Biology, University of Alcalá, Alcalá de Henares 28871, Spain
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Demirci U, Buyukberber S, Yılmaz G, Kerem M, Coskun U, Uner A, Baykara M, Pasali H, Benekli M. Hepatotoxicity associated with lapatinib in an experimental rat model. Eur J Cancer 2012; 48:279-85. [DOI: 10.1016/j.ejca.2011.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/28/2011] [Accepted: 10/10/2011] [Indexed: 01/31/2023]
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Berz D, Wanebo H. Targeting the growth factors and angiogenesis pathways: Small molecules in solid tumors. J Surg Oncol 2011; 103:574-86. [DOI: 10.1002/jso.21776] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Andres C, Meyer S, Dina OA, Levine JD, Hucho T. Quantitative automated microscopy (QuAM) elucidates growth factor specific signalling in pain sensitization. Mol Pain 2010; 6:98. [PMID: 21187008 PMCID: PMC3023724 DOI: 10.1186/1744-8069-6-98] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 12/27/2010] [Indexed: 01/19/2023] Open
Abstract
Background Dorsal root ganglia (DRG)-neurons are commonly characterized immunocytochemically. Cells are mostly grouped by the experimenter's eye as "marker-positive" and "marker-negative" according to their immunofluorescence intensity. Classification criteria remain largely undefined. Overcoming this shortfall, we established a quantitative automated microscopy (QuAM) for a defined and multiparametric analysis of adherent heterogeneous primary neurons on a single cell base. The growth factors NGF, GDNF and EGF activate the MAP-kinase Erk1/2 via receptor tyrosine kinase signalling. NGF and GDNF are established factors in regeneration and sensitization of nociceptive neurons. If also the tissue regenerating growth factor, EGF, influences nociceptors is so far unknown. We asked, if EGF can act on nociceptors, and if QuAM can elucidate differences between NGF, GDNF and EGF induced Erk1/2 activation kinetics. Finally, we evaluated, if the investigation of one signalling component allows prediction of the behavioral response to a reagent not tested on nociceptors such as EGF. Results We established a software-based neuron identification, described quantitatively DRG-neuron heterogeneity and correlated measured sample sizes and corresponding assay sensitivity. Analysing more than 70,000 individual neurons we defined neuronal subgroups based on differential Erk1/2 activation status in sensory neurons. Baseline activity levels varied strongly already in untreated neurons. NGF and GDNF subgroup responsiveness correlated with their subgroup specificity on IB4(+)- and IB4(-)-neurons, respectively. We confirmed expression of EGF-receptors in all sensory neurons. EGF treatment induced STAT3 translocation into the nucleus. Nevertheless, we could not detect any EGF induced Erk1/2 phosphorylation. Accordingly, intradermal injection of EGF resulted in a fundamentally different outcome than NGF/GDNF. EGF did not induce mechanical hyperalgesia, but blocked PGE2-induced sensitization. Conclusions QuAM is a suitable if not necessary tool to analyze activation of endogenous signalling in heterogeneous cultures. NGF, GDNF and EGF stimulation of DRG-neurons shows differential Erk1/2 activation responses and a corresponding differential behavioral phenotype. Thus, in addition to expression-markers also signalling-activity can be taken for functional subgroup differentiation and as predictor of behavioral outcome. The anti-nociceptive function of EGF is an intriguing result in the context of tissue damage but also for understanding pain resulting from EGF-receptor block during cancer therapy.
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Affiliation(s)
- Christine Andres
- Department for Molecular Human Genetics, Max Planck Institute for Molecular Genetics, Ihnestrasse 73, Berlin, Germany
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Cheng YC, Valero V, Davis ML, Green MC, Gonzalez-Angulo AM, Theriault RL, Murray JL, Hortobagyi GN, Ueno NT. Addition of GM-CSF to trastuzumab stabilises disease in trastuzumab-resistant HER2+ metastatic breast cancer patients. Br J Cancer 2010; 103:1331-4. [PMID: 20877352 PMCID: PMC2990606 DOI: 10.1038/sj.bjc.6605918] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background: One of the proposed mechanisms of trastuzumab-induced regression of human epidermal growth factor receptor 2-positive (HER2+) tumours includes facilitation of antibody-dependent cell-mediated cytotoxicity (ADCC). Granulocyte-macrophage colony-stimulating factor (GM-CSF) mediates ADCC. We presented our pilot study of adding GM-CSF to trastuzumab in patients with trastuzumab-resistant HER2+ metastatic breast cancer. Methods: Patients with HER2+ metastatic breast cancer that progressed after trastuzumab +/− chemotherapy were continued on trastuzumab 2 mg kg–1 intravenous weekly and GM-CSF 250 μg m–2 subcutaneous daily. Patients were assessed for response every 8 weeks. Treatment was continued until disease progression or intolerable toxicity. Results: Seventeen patients were evaluable (median age 48 years, range 27–75 years). The median number of metastatic sites was 2 (range 1–3); the most common site was the liver (n=10). The median number of prior regimens for metastatic disease was 2 (range 1–5). No objective disease response was observed, but five patients (29%) had stable disease for a median duration of 15.8 (range 10–53.9) weeks. The most common adverse event was rash at the injection site. No grade 4 or irreversible adverse event was seen. Conclusion: The addition of GM-CSF to trastuzumab alone had a modest clinical benefit and acceptable safety profile in heavily pretreated patients with trastuzumab-resistant HER2+ metastatic breast cancer.
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Affiliation(s)
- Y C Cheng
- Division of Neoplastic Diseases and Related Disorders, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
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Boér K, Láng I, Llombart-Cussac A, Andreasson I, Vivanco GL, Sanders N, Pover GM, Murray E. Vandetanib with docetaxel as second-line treatment for advanced breast cancer: a double-blind, placebo-controlled, randomized Phase II study. Invest New Drugs 2010; 30:681-7. [PMID: 20830502 DOI: 10.1007/s10637-010-9538-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 09/01/2010] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of this Phase II study was to assess the efficacy and safety of vandetanib in combination with docetaxel in patients with pretreated advanced breast cancer. METHODS The primary study objective was to compare the number of progression events in patients receiving once-daily oral vandetanib (100 mg) in combination with docetaxel (100 mg/m(2) iv every 21 days) versus placebo plus docetaxel. Sixty-four patients were randomized to receive study treatment (n = 35, vandetanib; n = 29, placebo). RESULTS A slightly greater number of patients had experienced a progression event by the data cut-off in the vandetanib group (24 [69%]) compared with the placebo group (18 [62%]); HR = 1.19, two-sided 80% CI: 0.79-1.81; two-sided P = 0.59), suggesting that the addition of vandetanib to docetaxel did not affect the risk of disease progression compared with placebo plus docetaxel. The safety and tolerability profile of the combination therapy reflected those of both drugs as monotherapy agents. CONCLUSIONS In patients with advanced breast cancer, vandetanib plus docetaxel was generally well tolerated. Clinical benefit was not different to that observed with placebo plus docetaxel. However, due to the small patient number it was not possible to yield robust results, further research is required to identify predictive factors for patient selection.
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Affiliation(s)
- Katalin Boér
- Medical Oncology Department, St John Hospital, Bécsi út 132, 1032 Budapest, Hungary.
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Current standards in the treatment of metastatic breast cancer with focus on Lapatinib: a review by a Central European Consensus Panel. Wien Klin Wochenschr 2010; 122:368-79. [PMID: 20549373 DOI: 10.1007/s00508-010-1373-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Accepted: 04/13/2010] [Indexed: 10/19/2022]
Abstract
In breast cancer, early detection as well as new developments in therapeutic options has resulted in less patients presenting with metastatic disease. However, about one-third of women with early stage breast cancer will eventually develop metastatic disease. Furthermore, approximately 20-30% of patients with breast cancer have tumors that overexpress human epidermal growth factor receptor (HER-2), which is associated with an aggressive tumor phenotype and poor prognosis. The identification of the HER-2 protein led to the development of highly effective therapeutics directed at this receptor. Trastuzumab, a recombinant, humanized, monoclonal antibody that binds to the extracellular domain of the HER-2 protein, has shown significant clinical benefit in metastatic and early-stage HER-2-positive breast cancer. Since the cancer recurs after adjuvant therapy in some women, and metastatic breast cancer eventually develops resistance to trastuzumab, there is a need for alternative treatment modalities to block HER-2 signaling. One of these treatment options is lapatinib, an orally active small molecule that inhibits the tyrosine kinases of HER-2 and the epidermal growth factor receptor type 1 (EGFR). In this consensus statement current treatment options in metastatic and locally advanced disease are discussed with a special focus on lapatinib.
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Bachawal SV, Wali VB, Sylvester PW. Enhanced antiproliferative and apoptotic response to combined treatment of gamma-tocotrienol with erlotinib or gefitinib in mammary tumor cells. BMC Cancer 2010; 10:84. [PMID: 20211018 PMCID: PMC2841143 DOI: 10.1186/1471-2407-10-84] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Accepted: 03/08/2010] [Indexed: 01/22/2023] Open
Abstract
Background Aberrant ErbB receptor signaling is associated with various types of malignancies. γ-Tocotrienol is a member of the vitamin E family of compounds that displays potent anticancer activity that is associated with suppression in ErbB receptor phosphorylation and mitogenic signaling. Erlotinib and gefitinib are tyrosine kinase inhibitors that block ErbB1 receptor activation, whereas trastuzumab is a monoclonal antibody that has been designed to specifically inhibit ErbB2 receptor activation. However, the clinical effectiveness of these agents have been disappointing because of cooperation between different ErbB family members that can rescue cancer cells from agents directed against a single ErbB receptor subtype. It was hypothesized that targeting multiple ErbB receptor subtypes with combined treatment of γ-tocotrienol and ErbB receptor inhibitors would provide greater anticancer effects than monotherapy targeting only a single ErbB receptor subtype. Methods Highly malignant mouse +SA mammary epithelial cells were maintained in culture on serum-free defined media containing 10 ng/ml EGF as a mitogen. Cell viability wase determined by MTT assay, whereas Western blot and immunofluorescent staining was used to determine treatment effects on ErbB receptor subtype level and activation. Treatment-induced apoptosis was determined using annexin V staining and Western blot analysis of cleaved caspase-3 and PARP levels. Results Treatment with 3.5 μM γ-tocotrienol, 0.5 μM erlotinib or 1.0 μM gefitinib alone, significantly inhibited +SA tumor cell growth. Combined treatment with subeffective doses of erlotinib (0.25 μM) or gefitinib (0.5 μM) with subeffective doses of γ-tocotrienol (0.5-3.0 μM) significantly inhibited the growth and induced apoptosis in a dose-responsive manner. Trastuzumab treatment alone or in combination had no effect on +SA cell growth and viability. Combined treatment of γ-tocotrienol with erlotinib or gefitinib also cause a large decrease in ErbB3, ErbB4, and to a lesser extent ErbB2 receptor levels, and EGF-dependent ErbB2-4 tyrosine phosphorylation (activation), but had no effect on ErbB1 receptor levels or activation. Conclusion Combination treatment of γ-tocotrienol with specific ErbB receptor inhibitors is more effective in reducing mammary tumor cell growth and viability than high dose monotherapy, suggesting that targeting multiple ErbB receptors with combination therapy may significantly improve the therapeutic response in breast cancer patients.
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Affiliation(s)
- Sunitha V Bachawal
- College of Pharmacy, University of Louisiana at Monroe, 700 University Ave, Monroe, Louisiana 71209, USA
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Rosen LS, Ashurst HL, Chap L. Targeting signal transduction pathways in metastatic breast cancer: a comprehensive review. Oncologist 2010; 15:216-35. [PMID: 20200040 PMCID: PMC3227950 DOI: 10.1634/theoncologist.2009-0145] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Accepted: 01/11/2010] [Indexed: 02/04/2023] Open
Abstract
Greater understanding of the underlying etiology and biology of breast cancer is enabling the clinical development of targeted therapies for metastatic breast cancer (MBC). Following the successful introduction of trastuzumab, the first human epidermal growth factor receptor (HER) biologically targeted therapy to become widely used in MBC patients, other agents have been developed. Novel agents include monoclonal antibodies such as pertuzumab, which bind to receptors on the cell surface, and tyrosine kinase inhibitors (TKIs) such as lapatinib, which target intracellular pathways such as that of the epidermal growth factor receptor. There is also growing clinical experience with antiangiogenic agents, particularly in combination with chemotherapy. These include the monoclonal antibody bevacizumab, which targets vascular endothelial growth factor receptor, and multitargeted TKIs with antiangiogenic and antiproliferative activities, such as sunitinib. Combination treatment with multiple agents targeting both the HER family and angiogenic pathways (e.g., trastuzumab plus bevacizumab) is also showing activity in the clinical setting. Despite recent advances, there are unanswered questions regarding the management of MBC with targeted agents. Future studies are necessary to determine the optimal combinations, doses, and schedules required to maximize clinical activity while minimizing toxicity. Despite the temptation to use a targeted agent in all patients, identification of patient subgroups most likely to benefit must be a key goal and will be critical to the successful future use of these treatments. The aim of this review is to summarize some of the key signaling pathways involved in tumor progression and some of the novel therapies that are in development for MBC.
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Affiliation(s)
- Lee S. Rosen
- Premiere Oncology, Santa Monica, California, USA
| | | | - Linnea Chap
- Premiere Oncology, Santa Monica, California, USA
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Abstract
The human epidermal growth factor receptor (HER) family of growth factor receptor tyrosine kinases (RTKs) plays an important role in the biology of many cancers. In breast cancer, HER2 and its homo- or heterodimerization with HER1 or HER3 are essential for cancer cell growth and survival. Patients overexpressing HER2 have a poor prognosis, which can be substantially improved upon HER2-targeted therapy using the monoclonal antibody trastuzumab. Lapatinib is a novel dual tyrosine kinase inhibitor, blocking HER1 and HER2 tyrosine kinase activity by binding to the ATP-binding site of the receptor's intracellular domain. This results in inhibition of tumor cell growth. The drug is relatively well tolerated in patients, with few and mostly low-grade adverse effects. In particular and unlike to trastuzumab, it has very little, if any, adverse effects on cardiac function. In patients with advanced HER2-positive breast cancer, lapatinib has shown substantial antitumor activity, particularly in combination with capecitabine upon progressive disease following standard therapy with antracyclines, taxanes, and trastuzumab. Ongoing and future studies will explore its role in the adjuvant therapy setting, in drug combinations other than capecitabine, and in the treatment of HER2-positive tumors other than breast cancer.
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Affiliation(s)
- Tanja Schneider-Merck
- Department of Oncology and Hematology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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42
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Riera R, Soárez PCD, Puga MEDS, Ferraz MB. Lapatinib for treatment of advanced or metastasized breast cancer: systematic review. SAO PAULO MED J 2009; 127:295-301. [PMID: 20169279 DOI: 10.1590/s1516-31802009000500009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Accepted: 11/18/2009] [Indexed: 11/22/2022] Open
Abstract
CONTEXT AND OBJECTIVE Around 16% to 20% of women with breast cancer have advanced, metastasized breast cancer. At this stage, the disease is treatable, but not curable. The objective here was to assess the effectiveness of lapatinib for treating patients with advanced or metastasized breast cancer. DESIGN AND SETTING Systematic review of the literature, developed at Centro Paulista de Economia da Saúde (CPES), Universidade Federal de São Paulo (Unifesp). METHOD Systematic review with searches in virtual databases (PubMed, Lilacs [Literatura Latino-Americana e do Caribe em Ciências da Saúde], Cochrane Library, Scirus and Web of Science) and manual search. RESULTS Only one clinical trial that met the selection criteria was found. This study showed that lapatinib in association with capecitabine reduced the risk of cancer progression by 51% (95% confidence interval, CI: 0.34-0.71; P < 0.001), compared with capecitabine alone, without any increase in severe adverse effects. CONCLUSION The combination of lapatinib plus capecitabine was more effective than capecitabine alone for reducing the risk of cancer progression. Further randomized clinical trials need to be carried out with the aim of assessing the effectiveness of lapatinib as monotherapy or in association for first-line or second-line treatment of advanced breast cancer.
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Affiliation(s)
- Rachel Riera
- Centro Paulista de Economia da Saúde, Vila Clementino, São Paulo (SP), Brazil.
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43
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Valdehita A, Bajo AM, Schally AV, Varga JL, Carmena MJ, Prieto JC. Vasoactive intestinal peptide (VIP) induces transactivation of EGFR and HER2 in human breast cancer cells. Mol Cell Endocrinol 2009; 302:41-8. [PMID: 19101605 DOI: 10.1016/j.mce.2008.11.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 11/20/2008] [Accepted: 11/21/2008] [Indexed: 01/22/2023]
Abstract
We analyzed the cross-talk between receptors for vasoactive intestinal peptide (VIP) and the human epidermal growth factor family of tyrosine kinase receptors (HER) in oestrogen-dependent (T47D) and oestrogen-independent (MDA-MB-468) human breast cancer cells. VIP treatment slowly increased the expression levels of EGFR but it rapidly augmented phosphorylation of EGFR and HER2 in both cell lines. This pattern of HERs transactivation was blocked by the specific VIP antagonist JV-1-53, supporting the direct involvement of VIP receptors in formation of P-EGFR and P-HER2. VIP-induced transactivation was also abolished by H89 (protein kinase A inhibitor), PP2 (Src inhibitor) or TAPI-1 (inhibitor of matrix metalloproteases), following a differential pattern. These results shed a new light on the specific signalling pathways involved in EGFR/HER2 transactivation by VPAC receptors and suggest the potential usefulness of VIP receptor antagonists together with current antibodies against EGFR/HER2 and/or tyrosine kinase inhibitors for breast cancer therapy.
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Affiliation(s)
- Ana Valdehita
- Molecular Neuroendocrinology Unit, Department of Biochemistry and Molecular Biology, Alcalá University, 28871 Alcalá de Henares, Spain
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44
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Rappoport JZ, Simon SM. Endocytic trafficking of activated EGFR is AP-2 dependent and occurs through preformed clathrin spots. J Cell Sci 2009; 122:1301-5. [PMID: 19351721 DOI: 10.1242/jcs.040030] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The removal of the epidermal growth factor receptor (EGFR) from the cell surface by endocytosis is triggered by receptor activation, but many facets of EGFR trafficking remain unresolved. We employed total internal fluorescence microscopy to elucidate the dynamics of activated EGFR at the cell surface through live-cell imaging. The results of these studies demonstrate that: (1) EGFR does not localize to caveolae in live cells either before or after activation; (2) EGFR does localize to clathrin-coated pits, but only after activation; (3) activation does not result in the formation of new clathrin-coated pits; (4) activated EGFR clusters at sites of preformed clathrin lattices; (5) The AP-2 complex is involved in the internalization of activated EGFR. Using imaging techniques to show the endocytic sorting of activated EGFR for the first time in live cells, these studies suggest a refinement of the model for EGFR entry.
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45
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Campos SM. Anti-epidermal growth factor receptor strategies for advanced breast cancer. Cancer Invest 2008; 26:757-68. [PMID: 18853311 DOI: 10.1080/07357900801971040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Susana M Campos
- Department of Breast and Gynecology, Dana Farber Cancer Institute, Harvard University, Boston, Massachusetts, USA
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46
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Abstract
Lapatinib is an oral receptor tyrosine kinase inhibitor, inhibiting both the ErbB-1 and ErbB-2 receptors. Lapatinib has been shown to have activity in ErbB-2-overexpressing breast cancer in several phase II and III clinical trials. Specifically, lapatinib is effective in patients with metastatic breast cancer, with inflammatory breast cancer, and possibly, with brain metastases. An ongoing clinical trial and another anticipated clinical trial will investigate lapatinib as adjuvant treatment in early-stage disease. Lapatinib has specific toxicities, the most common being diarrhea and rash. Cardiac toxicity is rarely seen with lapatinib. This paper reviews lapatinib-associated toxicities and provides practical management recommendations based on available data.
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Affiliation(s)
- Beverly Moy
- Massachusetts General Hospital Cancer Center, Gillette Center for Women's Cancers, Lawrence House, LRH 304, Boston, MA 02114, USA.
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47
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Lin WH, Song JS, Chang TY, Chang CY, Fu YN, Yeh CL, Wu SH, Huang YW, Fang MY, Lien TW, Hsieh HP, Chao YS, Huang SF, Tsai SF, Wang LM, Hsu JTA, Chen YR. A cell-based high-throughput screen for epidermal growth factor receptor pathway inhibitors. Anal Biochem 2008; 377:89-94. [PMID: 18358823 DOI: 10.1016/j.ab.2008.02.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 02/28/2008] [Accepted: 02/28/2008] [Indexed: 10/22/2022]
Abstract
Epidermal growth factor receptor (EGFR) is a valid drug target for development of target-based therapeutics against non-small-cell lung cancer. In this study, we established a high-throughput cell-based assay to screen for compounds that may inhibit EGFR activation and/or EGFR-mediated downstream signaling pathway. This drug screening platform is based on the characterization of an EGFR-transfected 32D cell line (32D-EGFR). The expression of EGFR in 32D cells allowed cell proliferation in the presence of either epidermal growth factor (EGF) or interleukin 3 (IL-3) and provided a system for both screening and counterscreening of EGFR pathway-inhibitory compounds. After the completion of primary and secondary screenings in which 32D-EGFR cells were grown under the stimulation of either EGF or IL-3, 9 of 20,000 compounds were found to selectively inhibit the EGF-dependent proliferation, but not the IL-3-dependent proliferation, of 32D-EGFR cells. Subsequent analysis showed that 3 compounds of the 9 initial hits directly inhibited the kinase activity of recombinant EGFR in vitro and the phosphorylation of EGFR in H1299 cells transfected with EGFR. Thus, this 32D-EGFR assay system provides a promising approach for identifying novel EGFR and EGFR signaling pathway inhibitors with potential antitumor activity.
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Affiliation(s)
- Wen-Hsing Lin
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Taiwan
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48
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Ding Y, Brackenbury WJ, Onganer PU, Montano X, Porter LM, Bates LF, Djamgoz MBA. Epidermal growth factor upregulates motility of Mat-LyLu rat prostate cancer cells partially via voltage-gated Na+ channel activity. J Cell Physiol 2008; 215:77-81. [PMID: 17960590 DOI: 10.1002/jcp.21289] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The main aim of this investigation was to determine whether a functional relationship existed between epidermal growth factor (EGF) and voltage-gated sodium channel (VGSC) upregulation, both associated with strongly metastatic prostate cancer cells. Incubation with EGF for 24 h more than doubled VGSC current density. Similar treatment with EGF significantly and dose-dependently enhanced the cells' migration through Transwell filters. Both the patch clamp recordings and the migration assay suggested that endogenous EGF played a similar role. Importantly, co-application of EGF and tetrodotoxin, a highly selective VGSC blocker, abolished 65% of the potentiating effect of EGF. It is suggested that a significant portion of the EGF-induced enhancement of migration occurred via VGSC activity.
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Affiliation(s)
- Yanning Ding
- Neuroscience Solutions to Cancer Research Group, Division of Cell and Molecular Biology, Imperial College London, South Kensington Campus, London, UK
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49
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Whenham N, D'Hondt V, Piccart MJ. HER2-Positive Breast Cancer: From Trastuzumab to Innovatory Anti-HER2 Strategies. Clin Breast Cancer 2008; 8:38-49. [DOI: 10.3816/cbc.2008.n.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Abstract
Breast cancer continues to be a major health problem despite a decrease in mortality rates over the past 2 decades. Although many advances have been made in the treatment of breast cancer, drug therapy for the disease continues to evolve as more is learned about cell biology and cellular signaling pathways. The development of targeted agents offers the hope of new therapies with better efficacy and tolerability. Biologic therapy has been a cornerstone of targeted therapy for the treatment of advanced breast cancer and is now entering the adjuvant arena. This review summarizes the results of several adjuvant studies and discusses future directions for breast cancer biotherapy.
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Affiliation(s)
- Barbara S Craft
- Division of Hematology and Oncology, University of Mississippi Medical Center, Jackson, MS, USA
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