1
|
Liskova V, Chovancova B, Galvankova K, Klena L, Matyasova K, Babula P, Grman M, Rezuchova I, Bartosova M, Krizanova O. Slow Sulfide Donor GYY4137 Increased the Sensitivity of Two Breast Cancer Cell Lines to Paclitaxel by Different Mechanisms. Biomolecules 2024; 14:651. [PMID: 38927055 PMCID: PMC11202087 DOI: 10.3390/biom14060651] [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: 03/27/2024] [Revised: 05/22/2024] [Accepted: 05/29/2024] [Indexed: 06/28/2024] Open
Abstract
Paclitaxel (PTX) is a chemotherapeutic agent affecting microtubule polymerization. The efficacy of PTX depends on the type of tumor, and its improvement would be beneficial in patients' treatment. Therefore, we tested the effect of slow sulfide donor GYY4137 on paclitaxel sensitivity in two different breast cancer cell lines, MDA-MB-231, derived from a triple negative cell line, and JIMT1, which overexpresses HER2 and is resistant to trastuzumab. In JIMT1 and MDA-MB-231 cells, we compared IC50 and some metabolic (apoptosis induction, lactate/pyruvate conversion, production of reactive oxygen species, etc.), morphologic (changes in cytoskeleton), and functional (migration, angiogenesis) parameters for PTX and PTX/GYY4137, aiming to determine the mechanism of the sensitization of PTX. We observed improved sensitivity to paclitaxel in the presence of GYY4137 in both cell lines, but also some differences in apoptosis induction and pyruvate/lactate conversion between these cells. In MDA-MB-231 cells, GYY4137 increased apoptosis without affecting the IP3R1 protein, changing the morphology of the cytoskeleton. A mechanism of PTX sensitization by GYY4137 in JIMT1 cells is distinct from MDA-MB-231, and remains to be further elucidated. We suggest different mechanisms of action for H2S on the paclitaxel treatment of MDA-MB-231 and JIMT1 breast cancer cell lines.
Collapse
Affiliation(s)
- Veronika Liskova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
| | - Barbora Chovancova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
| | - Kristina Galvankova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
| | - Ladislav Klena
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
| | - Katarina Matyasova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
| | - Petr Babula
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic;
| | - Marian Grman
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
| | - Ingeborg Rezuchova
- Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 84505 Bratislava, Slovakia; (I.R.); (M.B.)
| | - Maria Bartosova
- Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 84505 Bratislava, Slovakia; (I.R.); (M.B.)
| | - Olga Krizanova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (V.L.); (K.G.); (L.K.); (M.G.)
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic;
| |
Collapse
|
2
|
Xu W, Ye C, Qing X, Liu S, Lv X, Wang W, Dong X, Zhang Y. Multi-target tyrosine kinase inhibitor nanoparticle delivery systems for cancer therapy. Mater Today Bio 2022; 16:100358. [PMID: 35880099 PMCID: PMC9307458 DOI: 10.1016/j.mtbio.2022.100358] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 12/19/2022] Open
Abstract
Multi-target Tyrosine Kinase Inhibitors (MTKIs) have drawn substantial attention in tumor therapy. MTKIs could inhibit tumor cell proliferation and induce apoptosis by blocking the activity of tyrosine kinase. However, the toxicity and drug resistance of MTKIs severely restrict their further clinical application. The nano pharmaceutical technology based on MTKIs has attracted ever-increasing attention in recent years. Researchers deliver MTKIs through various types of nanocarriers to overcome drug resistance and improve considerably therapeutic efficiency. This review intends to summarize comprehensive applications of MTKIs nanoparticles in malignant tumor treatment. Firstly, the mechanism and toxicity were introduced. Secondly, various nanocarriers for MTKIs delivery were outlined. Thirdly, the combination treatment schemes and drug resistance reversal strategies were emphasized to improve the outcomes of cancer therapy. Finally, conclusions and perspectives were summarized to guide future research.
Collapse
Affiliation(s)
- Wenjing Xu
- School of Medicine, Southeast University, Nanjing, 210009, China
| | - Chunping Ye
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
| | - Xin Qing
- School of Medicine, Southeast University, Nanjing, 210009, China
| | - Shengli Liu
- Hepatopancreatobiliary Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, China
| | - Xinyi Lv
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China
| | - Wenjun Wang
- School of Physical Science and Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Xiaochen Dong
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Yewei Zhang
- Hepatopancreatobiliary Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, China
| |
Collapse
|
3
|
Experimental and computational assessment of the synergistic pharmacodynamic drug-drug interactions of a triple combination therapy in refractory HER2-positive breast cancer cells. J Pharmacokinet Pharmacodyn 2021; 49:227-241. [PMID: 34773540 DOI: 10.1007/s10928-021-09795-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 10/25/2021] [Indexed: 10/19/2022]
Abstract
The development of innate and/or acquired resistance to human epidermal growth factor receptor type-2 (HER2)-targeted therapy in HER2-positive breast cancer (HER2 + BC) is a major clinical challenge that needs to be addressed. One of the main mechanisms of resistance includes aberrant activation of the HER2 and phosphatidylinositol 3-kinase/AKT8 virus oncogene cellular homolog/mammalian target of rapamycin (PI3K/Akt/mTOR) pathways. In the present work, we propose to use a triple combination therapy to combat this resistance phenomenon. Our strategy involves evaluation of two targeted small molecule agents, everolimus and dasatinib, with complementary inhibitory circuitries in the PI3K/Akt/mTOR pathway, along with a standard cytotoxic agent, paclitaxel. Everolimus inhibits mTOR, while dasatinib inhibits Src, which is a protein upstream of Akt. An over-activation of these two proteins has been implicated in approximately 50% of HER2 + BC cases. Hence, we hypothesize that their simultaneous inhibition may lead to enhanced cell-growth inhibition. Moreover, the potent apoptotic effects of paclitaxel may help augment the overall cytotoxicity of the proposed triple combination in HER2 + BC cells. To this end, we investigated experimentally and assessed computationally the in vitro pharmacodynamic drug-drug interactions of the various dual and triple combinations to assess their subsequent combinatorial effects (synergistic/additive/antagonistic) in a HER2-therapy resistant BC cell line, JIMT-1. Our proposed triple combination therapy demonstrated synergism in JIMT-1 cells, thus corroborating our hypothesis. This effort may form the basis for further investigation of the triple combination therapy in vivo at a mechanistic level in HER2-therapy resistant BC cells.
Collapse
|
4
|
Hassani D, Amiri MM, Mohammadi M, Yousefi P, Judaki MA, Mobini M, Golsaz-Shirazi F, Jeddi-Tehrani M, Shokri F. A novel tumor inhibitory hybridoma monoclonal antibody with dual specificity for HER3 and HER2. Curr Res Transl Med 2021; 69:103277. [PMID: 33639587 DOI: 10.1016/j.retram.2021.103277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/19/2021] [Accepted: 01/31/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND The human epidermal growth factor receptor (HER/ErbB) family-targeted therapies result in a significant improvement in cancer immunotherapy. Monoclonal antibodies (MAb) against HER2 demonstrated a survival benefit for patients; however, drug resistance unavoidably occurs due to the overexpression of HER3, which leads to treatment failure. Effective inhibition of HER3 besides HER2 is thought to be required to overcome resistance and enhance therapeutic efficacy. OBJECTIVE The present study describes the production and characterization of a novel MAb, designated 1G5D2, which acts as a natural bispecific antibody targeting extracellular domains (ECD) of both HER2 and HER3. METHODS In this study, 1G5D2 was produced by hybridoma technology against HER3-ECD, and its structural and functional characteristics were studied by various methodologies, including enzyme linked-immunosorbent assays, flow cytometry, immunoblotting, cell signaling, and cell proliferation assays. RESULTS 1G5D2 specifically binds to both HER2 (subdomain III + IV) and HER3 (subdomain I + II) expressed on tumor cells, and these receptors compete with each other for binding to this MAb. Competition flow cytometry experiments demonstrated that 1G5D2 does not compete with heregulin and recognizes an epitope out of HER3 ligand-binding site. Evaluation of 1G5D2 inhibitory effects in tumor cell lines co-expressing HER2 and HER3 showed that 1G5D2 synergizes with trastuzumab to inhibit both PI3K/AKT and MAPK/ERK pathways and potently downregulates the proliferation of these tumor cells more efficiently than each MAb alone. CONCLUSION 1G5D2 is the first reported hybridoma antibody, which acts as a natural HER2/HER3 bispecific antibody. It might potentially be a suitable therapeutic candidate for HER2/HER3 overexpressing cancer types.
Collapse
Affiliation(s)
- Danesh Hassani
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohammad Mehdi Amiri
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mehdi Mohammadi
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Parisa Yousefi
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
| | - Mohammad Ali Judaki
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Maryam Mobini
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Forough Golsaz-Shirazi
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mahmood Jeddi-Tehrani
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
| | - Fazel Shokri
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
5
|
A quantitative systems pharmacological approach identified activation of JNK signaling pathway as a promising treatment strategy for refractory HER2 positive breast cancer. J Pharmacokinet Pharmacodyn 2021; 48:273-293. [PMID: 33389550 DOI: 10.1007/s10928-020-09732-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/08/2020] [Indexed: 02/01/2023]
Abstract
HER2-positive breast cancer (BC) is a rapidly growing and aggressive BC subtype that predominantly affects younger women. Despite improvements in patient outcomes with anti-HER2 therapy, primary and/or acquired resistance remain a major clinical challenge. Here, we sought to use a quantitative systems pharmacological (QSP) approach to evaluate the efficacy of lapatinib (LAP), abemaciclib (ABE) and 5-fluorouracil (5-FU) mono- and combination therapies in JIMT-1 cells, a HER2+ BC cell line exhibiting intrinsic resistance to trastuzumab. Concentration-response relationships and temporal profiles of cellular viability were assessed upon exposure to single agents and their combinations. To quantify the nature and intensity of drug-drug interactions, pharmacodynamic cellular response models were generated, to characterize single agent and combination time course data. Temporal changes in cell-cycle phase distributions, intracellular protein signaling, and JIMT-1 cellular viability were quantified, and a systems-based protein signaling network model was developed, integrating protein dynamics to drive the observed changes in cell viability. Global sensitivity analyses for each treatment arm were performed, to identify the most influential parameters governing cellular responses. Our QSP model was able to adequately characterize protein dynamic and cellular viability trends following single and combination drug exposure. Moreover, the model and subsequent sensitivity analyses suggest that the activation of the stress pathway, through pJNK, has the greatest impact over the observed declines of JIMT-1 cell viability in vitro. These findings suggest that dual HER2 and CDK 4/6 inhibition may be a promising novel treatment strategy for refractory HER2+ BC, however, proof-of-concept in vivo studies are needed to further evaluate the combined use of these therapies.
Collapse
|
6
|
Chovancova B, Liskova V, Miklikova S, Hudecova S, Babula P, Penesova A, Sevcikova A, Durinikova E, Novakova M, Matuskova M, Krizanova O. Calcium signaling affects migration and proliferation differently in individual cancer cells due to nifedipine treatment. Biochem Pharmacol 2020; 171:113695. [DOI: 10.1016/j.bcp.2019.113695] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 11/05/2019] [Indexed: 01/30/2023]
|
7
|
Buiga P, Elson A, Tabernero L, Schwartz JM. Modelling the role of dual specificity phosphatases in herceptin resistant breast cancer cell lines. Comput Biol Chem 2019; 80:138-146. [PMID: 30952040 DOI: 10.1016/j.compbiolchem.2019.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/23/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Breast cancer remains the most lethal type of cancer for women. A significant proportion of breast cancer cases are characterised by overexpression of the human epidermal growth factor receptor 2 protein (HER2). These cancers are commonly treated by Herceptin (Trastuzumab), but resistance to drug treatment frequently develops in tumour cells. Dual-specificity phosphatases (DUSPs) are thought to play a role in the mechanism of resistance, since some of them were reported to be overexpressed in tumours resistant to Herceptin. RESULTS We used a systems biology approach to investigate how DUSP overexpression could favour cell proliferation and to predict how this mechanism could be reversed by targeted inhibition of selected DUSPs. We measured the expression of 20 DUSP genes in two breast cancer cell lines following long-term (6 months) exposure to Herceptin, after confirming that these cells had become resistant to the drug. We constructed several Boolean models including specific substrates of each DUSP, and showed that our models correctly account for resistance when overexpressed DUSPs were kept activated. We then simulated inhibition of both individual and combinations of DUSPs, and determined conditions under which the resistance could be reversed. CONCLUSIONS These results show how a combination of experimental analysis and modelling help to understand cell survival mechanisms in breast cancer tumours, and crucially enable us to generate testable predictions potentially leading to new treatments of resistant tumours.
Collapse
Affiliation(s)
- Petronela Buiga
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, Israel; School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Ari Elson
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, Israel
| | - Lydia Tabernero
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Jean-Marc Schwartz
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
| |
Collapse
|
8
|
Costamagna A, Rossi Sebastiano M, Natalini D, Simoni M, Valabrega G, Defilippi P, Visentin S, Ermondi G, Turco E, Caron G, Cabodi S. Modeling ErbB2-p130Cas interaction to design new potential anticancer agents. Sci Rep 2019; 9:3089. [PMID: 30816273 PMCID: PMC6395809 DOI: 10.1038/s41598-019-39510-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 01/11/2019] [Indexed: 12/02/2022] Open
Abstract
The ErbB2 receptor tyrosine kinase is overexpressed in approximately 15–20% of breast tumors and associated with aggressive disease and poor clinical outcome. p130Cas represents a nodal scaffold protein regulating cell survival, migration and proliferation in normal and pathological contexts. p130Cas overexpression in ErbB2 human breast cancer correlates with poor prognosis and metastasis formation. Recent data indicate that p130Cas association to ErbB2 protects ErbB2 from degradation, thus enhancing tumorigenesis. Therefore, inhibiting p130Cas/ErbB2 interaction might represent a new therapeutic strategy to target breast cancer. Here we demonstrate by performing Molecular Modeling, Molecular Dynamics, dot blot, ELISA and fluorescence quenching experiments, that p130Cas binds directly to ErbB2. Then, by structure-based virtual screening, we identified two potential inhibitors of p130Cas/ErbB2 interaction. Their experimental validation was performed in vitro and in ErbB2-positive breast cancer cellular models. The results highlight that both compounds interfere with p130Cas/ErbB2 binding and significantly affect cell proliferation and sensitivity to Trastuzumab. Overall, this study identifies p130Cas/ErbB2 complex as a potential breast cancer target revealing new therapeutic perspectives for protein-protein interaction (PPI).
Collapse
Affiliation(s)
- Andrea Costamagna
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | | | - Dora Natalini
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Matilde Simoni
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | | | - Paola Defilippi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Sonja Visentin
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Giuseppe Ermondi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Giulia Caron
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Sara Cabodi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy.
| |
Collapse
|
9
|
Paroni G, Bolis M, Zanetti A, Ubezio P, Helin K, Staller P, Gerlach LO, Fratelli M, Neve RM, Terao M, Garattini E. HER2-positive breast-cancer cell lines are sensitive to KDM5 inhibition: definition of a gene-expression model for the selection of sensitive cases. Oncogene 2018; 38:2675-2689. [DOI: 10.1038/s41388-018-0620-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/09/2018] [Accepted: 11/19/2018] [Indexed: 12/31/2022]
|
10
|
Exploration of Leads from Natural Domain Targeting HER2 in Breast Cancer: An In-Silico Approach. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9712-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
11
|
|
12
|
Bronte G, Andreis D, Bravaccini S, Maltoni R, Cecconetto L, Schirone A, Farolfi A, Fedeli A, Serra P, Donati C, Amadori D, Rocca A. Sorafenib for the treatment of breast cancer. Expert Opin Pharmacother 2017; 18:621-630. [PMID: 28335647 DOI: 10.1080/14656566.2017.1309024] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Breast cancer treatment includes many options depending on the tumor clinicopathological profile, which groups breast cancer into various subtypes. Bevacizumab is currently the only drug capable of targeting angiogenesis in breast cancer. Sorafenib has also been studied in combination with other agents. Areas covered: Pharmacological aspects of sorafenib, including results from preclinical studies on breast cancer cells; findings about clinical efficacy and safety in both single-arm and randomized clinical trials; ongoing trials. Expert opinion: Since sorafenib as a single agent has shown limited efficacy in breast cancer, its combination with other drugs is under investigation. Dose reduction is the main challenge when sorafenib is combined with chemotherapy or endocrine therapy. Although randomized phase-II trials on sorafenib plus chemotherapy versus chemotherapy alone have shown potential benefits in progression-free survival, preliminary results from a phase-III study in combination with capecitabine are negative. The definitive results of this trial and results from other ongoing phase-II trials will determine further developments of sorafenib in breast cancer. Although these additional data could help determine the most appropriate dose, drug combination and patient settings, a confirmation of the preliminary negative results reported in the phase-III trial are likely to discourage further use of sorafenib in breast cancer, given its non-negligible toxicity, lack of predicting markers, and the number of more promising drugs for breast cancer.
Collapse
Affiliation(s)
- Giuseppe Bronte
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Daniele Andreis
- b Unit of Biostatistics and Clinical Trials , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Sara Bravaccini
- c Biosciences Laboratory , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Roberta Maltoni
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Lorenzo Cecconetto
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Alessio Schirone
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Alberto Farolfi
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Anna Fedeli
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Patrizia Serra
- b Unit of Biostatistics and Clinical Trials , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Caterina Donati
- d Oncology Pharmacy , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Dino Amadori
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| | - Andrea Rocca
- a Department of Medical Oncology , Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS , Meldola , Italy
| |
Collapse
|
13
|
Venturutti L, Russo RIC, Rivas MA, Mercogliano MF, Izzo F, Oakley RH, Pereyra MG, De Martino M, Proietti CJ, Yankilevich P, Roa JC, Guzmán P, Cortese E, Allemand DH, Huang TH, Charreau EH, Cidlowski JA, Schillaci R, Elizalde PV. MiR-16 mediates trastuzumab and lapatinib response in ErbB-2-positive breast and gastric cancer via its novel targets CCNJ and FUBP1. Oncogene 2016; 35:6189-6202. [PMID: 27157613 PMCID: PMC5832962 DOI: 10.1038/onc.2016.151] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 02/26/2016] [Accepted: 03/24/2016] [Indexed: 12/11/2022]
Abstract
ErbB-2 amplification/overexpression accounts for an aggressive breast cancer (BC) subtype (ErbB-2-positive). Enhanced ErbB-2 expression was also found in gastric cancer (GC) and has been correlated with poor clinical outcome. The ErbB-2-targeted therapies trastuzumab (TZ), a monoclonal antibody, and lapatinib, a tyrosine kinase inhibitor, have proved highly beneficial. However, resistance to such therapies remains a major clinical challenge. We here revealed a novel mechanism underlying the antiproliferative effects of both agents in ErbB-2-positive BC and GC. TZ and lapatinib ability to block extracellular signal-regulated kinases 1/2 and phosphatidylinositol-3 kinase (PI3K)/AKT in sensitive cells inhibits c-Myc activation, which results in upregulation of miR-16. Forced expression of miR-16 inhibited in vitro proliferation in BC and GC cells, both sensitive and resistant to TZ and lapatinib, as well as in a preclinical BC model resistant to these agents. This reveals miR-16 role as tumor suppressor in ErbB-2-positive BC and GC. Using genome-wide expression studies and miRNA target prediction algorithms, we identified cyclin J and far upstream element-binding protein 1 (FUBP1) as novel miR-16 targets, which mediate miR-16 antiproliferative effects. Supporting the clinical relevance of our results, we found that high levels of miR-16 and low or null FUBP1 expression correlate with TZ response in ErbB-2-positive primary BCs. These findings highlight a potential role of miR-16 and FUBP1 as biomarkers of sensitivity to TZ therapy. Furthermore, we revealed miR-16 as an innovative therapeutic agent for TZ- and lapatinib-resistant ErbB-2-positive BC and GC.
Collapse
Affiliation(s)
- L Venturutti
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - RI Cordo Russo
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - MA Rivas
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - MF Mercogliano
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - F Izzo
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - RH Oakley
- Department of Health and Human Services, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - MG Pereyra
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
- Servicio de Anatomía Patológica, Hospital General de Agudos ‘Juan A Fernández’, Buenos Aires, Argentina
| | - M De Martino
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - CJ Proietti
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - P Yankilevich
- Instituto de Investigación en Biomedicina de Buenos Aires, CONICET—Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - JC Roa
- Departamento de Anatomía Patológica (BIOREN), Universidad de La Frontera, Temuco, Chile
- Departamento de Anatomía Patológica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
- Advanced Center for Chronic Diseases (ACCDIS), Pontificia Universidad Católica de Chile, Santiago de Chile, Santiago, Chile
| | - P Guzmán
- Departamento de Anatomía Patológica (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - E Cortese
- Servicio de Ginecología, Hospital Aeronáutico Central, Buenos Aires, Argentina
| | - DH Allemand
- Unidad de Patología Mamaria, Hospital General de Agudos ‘Juan A Fernández’, Buenos Aires, Argentina
| | - TH Huang
- Department of Molecular Medicine/Institute of Biotechnology, Cancer Therapy and Research Center, University of Texas, San Antonio, TX, USA
| | - EH Charreau
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - JA Cidlowski
- Department of Health and Human Services, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - R Schillaci
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| | - PV Elizalde
- Laboratory of Molecular Mechanisms of Carcinogenesis, Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, Argentina
| |
Collapse
|
14
|
p130Cas scaffold protein regulates ErbB2 stability by altering breast cancer cell sensitivity to autophagy. Oncotarget 2016; 7:4442-53. [PMID: 26716506 PMCID: PMC4826217 DOI: 10.18632/oncotarget.6710] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 11/25/2015] [Indexed: 11/25/2022] Open
Abstract
Overexpression of the ErbB2/HER2 receptor tyrosine kinase occurs in up to 20% of human breast cancers and correlates with aggressive disease. Several efficacious targeted therapies, including antibodies and kinase inhibitors, have been developed but the occurring of resistance to these agents is often observed. New therapeutic agents targeting the endocytic recycling and intracellular trafficking of membrane in tumor cells overexpressing ErbB2 are actually in clinical development. Nevertheless the mechanisms underlying ErbB2 downregulation are still obscure. We have previously demonstrated that the overexpression of the p130Cas adaptor protein in ErbB2 positive breast cancer, promotes tumor aggressiveness and progression. Here we demonstrate that lowering p130Cas expression in breast cancer cells is sufficient to induce ErbB2 degradation by autophagy. Conversely, p130Cas overexpression protects ErbB2 from degradation by autophagy. Furthermore, this autophagy-dependent preferential degradation of ErbB2 in absence of p130Cas is due to an increased ErbB2 ubiquitination. Indeed, the overexpression of p130Cas impairs ErbB2 ubiquitination by inhibiting the binding of Cbl and CHIP E3 ligases to ErbB2. Finally, our results indicate that p130Cas-dependent ErbB2 protection from degradation by autophagy may alter the sensitivity to the humanized monoclonal antibody trastuzumab. Consistently, in human ErbB2 positive breast cancers that develop resistance to trastuzumab, p130Cas expression is significantly increased suggesting that elevated levels of p130Cas can be involved in trastuzumab resistance.
Collapse
|
15
|
Shi H, Zhang W, Zhi Q, Jiang M. Lapatinib resistance in HER2+ cancers: latest findings and new concepts on molecular mechanisms. Tumour Biol 2016; 37:10.1007/s13277-016-5467-2. [PMID: 27726101 DOI: 10.1007/s13277-016-5467-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 09/23/2016] [Indexed: 12/12/2022] Open
Abstract
In the era of new and mostly effective molecular targeted therapies, human epidermal growth factor receptor 2 positive (HER2+) cancers are still intractable diseases. Lapatinib, a dual epidermal growth factor receptor (EGFR) and HER2 tyrosine kinase inhibitor, has greatly improved breast cancer prognosis in recent years after the initial introduction of trastuzumab (Herceptin). However, clinical evidence indicates the existence of both primary unresponsiveness and secondary lapatinib resistance, which leads to the failure of this agent in HER2+ cancer patients. It remains a major clinical challenge to target the oncogenic pathways with drugs having low resistance. Multiple pathways are involved in the occurrence of lapatinib resistance, including the pathways of receptor tyrosine kinase, non-receptor tyrosine kinase, autophagy, apoptosis, microRNA, cancer stem cell, tumor metabolism, cell cycle, and heat shock protein. Moreover, understanding the relationship among these mechanisms may contribute to future tumor combination therapies. Therefore, it is of urgent necessity to elucidate the precise mechanisms of lapatinib resistance and improve the therapeutic use of this agent in clinic. The present review, in the hope of providing further scientific support for molecular targeted therapies in HER2+ cancers, discusses about the latest findings and new concepts on molecular mechanisms underlying lapatinib resistance.
Collapse
Affiliation(s)
- Huiping Shi
- Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China
| | - Weili Zhang
- Department of Gastroenterology, Xiangcheng People's Hospital, Suzhou, Jiangsu Province, 215131, China
| | - Qiaoming Zhi
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| | - Min Jiang
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| |
Collapse
|
16
|
Liu J, Pan C, Guo L, Wu M, Guo J, Peng S, Wu Q, Zuo Q. A new mechanism of trastuzumab resistance in gastric cancer: MACC1 promotes the Warburg effect via activation of the PI3K/AKT signaling pathway. J Hematol Oncol 2016; 9:76. [PMID: 27581375 PMCID: PMC5007850 DOI: 10.1186/s13045-016-0302-1] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 08/11/2016] [Indexed: 12/13/2022] Open
Abstract
Background Trastuzumab, a humanized antibody targeting HER2, exhibits remarkable therapeutic efficacy against HER2-positive gastric cancer. However, recurrent therapeutic resistance presents revolutionary claims. Warburg effect and AKT signaling pathway was involved in the resistance to trastuzumab. Our previous studies have demonstrated that overexpression of metastasis associated with the colon cancer 1 (MACC1) predicted poor prognosis of GC and promoted tumor cells proliferation and invasion. In this study, we found that MACC1 was significantly upregulated in trastuzumab-resistant cell lines. Besides, downregulation of MACC1 reversed this resistance. Methods The effect of trastuzumab and glycolysis inhibitor combination on cell viability, apoptosis, and cell metabolism was investigated in vitro using established trastuzumab-resistant GC cell lines. We assessed the impact of trastuzumab combined with oxamate on tumor growth and metabolism in an established xenograft model of HER2-positive GC cell lines. Results Here, we found that MACC1 was significantly upregulated in trastuzumab-resistant cell lines. Besides, downregulation of MACC1 in trastuzumab-resistant cells reversed this resistance. Overexpression of MACC1-induced trastuzumab resistance, enhanced the Warburg effect, and activated the PI3K/AKT signaling pathway, while downregulation of MACC1 presented the opposite effects. Moreover, when the PI3K/AKT signaling pathway was inhibited, the effects of MACC1 on resistance and glycolysis were diminished. Our findings indicated that MACC1 promoted the Warburg effect mainly through the PI3K/AKT signaling pathway, which further enhanced GC cells trastuzumab resistance. Conclusions Our results indicate that co-targeting of HER2 and the Warburg effect reversed trastuzumab resistance in vitro and in vivo, suggesting that the combination might overcome trastuzumab resistance in MACC1-overexpressed, HER2-positive GC patients. Electronic supplementary material The online version of this article (doi:10.1186/s13045-016-0302-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Jing Liu
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Changqie Pan
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Lihong Guo
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Mengwan Wu
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Jing Guo
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Sheng Peng
- Department of ICU, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Qianying Wu
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Qiang Zuo
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.
| |
Collapse
|
17
|
Martin-Castillo B, Lopez-Bonet E, Cuyàs E, Viñas G, Pernas S, Dorca J, Menendez JA. Cancer stem cell-driven efficacy of trastuzumab (Herceptin): towards a reclassification of clinically HER2-positive breast carcinomas. Oncotarget 2016; 6:32317-38. [PMID: 26474458 PMCID: PMC4741696 DOI: 10.18632/oncotarget.6094] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 09/24/2015] [Indexed: 12/21/2022] Open
Abstract
Clinically HER2+ (cHER2+) breast cancer (BC) can no longer be considered a single BC disease entity in terms of trastuzumab responsiveness. Here we propose a framework for predicting the response of cHER2+ to trastuzumab that integrates the molecular distinctions of intrinsic BC subtypes with recent knowledge on cancer stem cell (CSC) biology. First, we consider that two interchangeable populations of epithelial-like, aldehyde dehydrogenase (ALDH)-expressing and mesenchymal-like, CD44+CD24-/low CSCs can be found in significantly different proportions across all intrinsic BC subtypes. Second, we overlap all the intrinsic subtypes across cHER2+ BC to obtain a continuum of mixed phenotypes in which one extreme exhibits a high identity with ALDH+ CSCs and the other extreme exhibits a high preponderance of CD44+CD24-/low CSCs. The differential enrichment of trastuzumab-responsive ALDH+ CSCs versus trastuzumab-refractory CD44+CD24-/low CSCs can explain both the clinical behavior and the primary efficacy of trastuzumab in each molecular subtype of cHER2+ (i.e., HER2-enriched/cHER2+, luminal A/cHER2+, luminal B/cHER2+, basal/cHER2+, and claudin-low/cHER2+). The intrinsic plasticity determining the epigenetic ability of cHER2+ tumors to switch between epithelial and mesenchymal CSC states will vary across the continuum of mixed phenotypes, thus dictating their intratumoral heterogeneity and, hence, their evolutionary response to trastuzumab. Because CD44+CD24-/low mesenchymal-like CSCs distinctively possess a highly endocytic activity, the otherwise irrelevant HER2 can open the door to a type of "Trojan horse" approach by employing antibody-drug conjugates such as T-DM1, which will allow a rapid and CSC-targeted delivery of cytotoxic drugs to therapeutically manage trastuzumab-unresponsive basal/cHER2+ BC. Contrary to the current dichotomous model used clinically, our model proposes that a reclassification of cHER2+ tumors based on the spectrum of molecular BC subtypes might inform on their CSC-determined sensitivity to trastuzumab, thus providing a better delineation of the predictive value of cHER2+ in BC by incorporating CSCs-driven intra-tumor heterogeneity into clinical decisions.
Collapse
Affiliation(s)
- Begoña Martin-Castillo
- Unit of Clinical Research, Catalan Institute of Oncology, Girona, Catalonia, Spain.,Molecular Oncology Group, Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia, Spain.,Department of Biochemistry and Molecular Biology II, Faculty of Pharmacy, Complutense University, Madrid, Spain
| | - Eugeni Lopez-Bonet
- Department of Anatomical Pathology, Dr. Josep Trueta Hospital of Girona, Girona, Catalonia, Spain
| | - Elisabet Cuyàs
- Molecular Oncology Group, Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia, Spain.,ProCURE (Program Against Cancer Therapeutic Resistance), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Catalonia, Spain
| | - Gemma Viñas
- Molecular Oncology Group, Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia, Spain.,Department of Medical Oncology, Catalan Institute of Oncology, Girona, Catalonia, Spain
| | - Sonia Pernas
- Department of Medical Oncology, Breast Unit, Catalan Institute of Oncology-Hospital Universitari de Bellvitge-Bellvitge Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | - Joan Dorca
- Molecular Oncology Group, Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia, Spain.,Department of Medical Oncology, Catalan Institute of Oncology, Girona, Catalonia, Spain
| | - Javier A Menendez
- Molecular Oncology Group, Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia, Spain.,ProCURE (Program Against Cancer Therapeutic Resistance), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Catalonia, Spain
| |
Collapse
|
18
|
Asić K. Dominant mechanisms of primary resistance differ from dominant mechanisms of secondary resistance to targeted therapies. Crit Rev Oncol Hematol 2016; 97:178-96. [DOI: 10.1016/j.critrevonc.2015.08.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 06/18/2015] [Accepted: 08/04/2015] [Indexed: 02/07/2023] Open
|
19
|
Farrugia MK, Sharma SB, Lin CC, McLaughlin SL, Vanderbilt DB, Ammer AG, Salkeni MA, Stoilov P, Agazie YM, Creighton CJ, Ruppert JM. Regulation of anti-apoptotic signaling by Kruppel-like factors 4 and 5 mediates lapatinib resistance in breast cancer. Cell Death Dis 2015; 6:e1699. [PMID: 25789974 PMCID: PMC4385942 DOI: 10.1038/cddis.2015.65] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 02/10/2015] [Accepted: 02/12/2015] [Indexed: 02/08/2023]
Abstract
The Kruppel-like transcription factors (KLFs) 4 and 5 (KLF4/5) are coexpressed in mouse embryonic stem cells, where they function redundantly to maintain pluripotency. In mammary carcinoma, KLF4/5 can each impact the malignant phenotype, but potential linkages to drug resistance remain unclear. In primary human breast cancers, we observed a positive correlation between KLF4/5 transcript abundance, particularly in the human epidermal growth factor receptor 2 (HER2)-enriched subtype. Furthermore, KLF4/5 protein was rapidly upregulated in human breast cancer cells following treatment with the HER2/epidermal growth factor receptor inhibitor, lapatinib. In addition, we observed a positive correlation between these factors in the primary tumors of genetically engineered mouse models (GEMMs). In particular, the levels of both factors were enriched in the basal-like tumors of the C3(1) TAg (SV40 large T antigen transgenic mice under control of the C3(1)/prostatein promoter) GEMM. Using tumor cells derived from this model as well as human breast cancer cells, suppression of KLF4 and/or KLF5 sensitized HER2-overexpressing cells to lapatinib. Indicating cooperativity, greater effects were observed when both genes were depleted. KLF4/5-deficient cells had reduced basal mRNA and protein levels of the anti-apoptotic factors myeloid cell leukemia 1 (MCL1) and B-cell lymphoma-extra large (BCL-XL). Moreover, MCL1 was upregulated by lapatinib in a KLF4/5-dependent manner, and enforced expression of MCL1 in KLF4/5-deficient cells restored drug resistance. In addition, combined suppression of KLF4/5 in cultured tumor cells additively inhibited anchorage-independent growth, resistance to anoikis and tumor formation in immunocompromised mice. Consistent with their cooperative role in drug resistance and other malignant properties, KLF4/5 levels selectively stratified human HER2-enriched breast cancer by distant metastasis-free survival. These results identify KLF4 and KLF5 as cooperating protumorigenic factors and critical participants in resistance to lapatinib, furthering the rationale for combining anti-MCL1/BCL-XL inhibitors with conventional HER2-targeted therapies.
Collapse
Affiliation(s)
- M K Farrugia
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] Program in Cancer Cell Biology, West Virginia University, Morgantown, WV 26506, USA
| | - S B Sharma
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] Program in Cancer Cell Biology, West Virginia University, Morgantown, WV 26506, USA
| | - C-C Lin
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - S L McLaughlin
- The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - D B Vanderbilt
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] Program in Cancer Cell Biology, West Virginia University, Morgantown, WV 26506, USA
| | - A G Ammer
- The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - M A Salkeni
- 1] The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA [2] Department of Medicine, West Virginia University, Morgantown, WV 26506, USA
| | - P Stoilov
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] Program in Cancer Cell Biology, West Virginia University, Morgantown, WV 26506, USA [3] The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - Y M Agazie
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] Program in Cancer Cell Biology, West Virginia University, Morgantown, WV 26506, USA [3] The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - C J Creighton
- Department of Medicine and Dan L Duncan Cancer Center, Division of Biostatistics, Baylor College of Medicine, Houston, TX 77030, USA
| | - J M Ruppert
- 1] Department of Biochemistry, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA [2] Program in Cancer Cell Biology, West Virginia University, Morgantown, WV 26506, USA [3] The Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| |
Collapse
|
20
|
Jiang H, Bai X, Zhao T, Zhang C, Zhang X. Fluorescence in situ hybridization of chromosome 17 polysomy in breast cancer using thin tissue sections causes the loss of CEP17 and HER2 signals. Oncol Rep 2014; 32:1889-96. [PMID: 25119636 DOI: 10.3892/or.2014.3402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 07/15/2014] [Indexed: 11/06/2022] Open
Abstract
Human epidermal growth factor receptor 2 (HER2 gene) and chromosome 17 polysomy are associated with breast cancer prognosis, chemotherapy and hormone therapy. HER2 gene analysis using fluorescence in situ hybridization (FISH) with 4-µm sections assuming a nuclear diameter of 6 µm caused the loss of genetic DNA. Using intact whole nuclei FISH (WNFISH) and thin tissue section FISH (TTFISH), 109 cases of invasive breast cancer were examined to observe correlations among HER2 gene amplification, CEP17 polysomy and the HER2/CEP17 ratio. The results showed significant differences in the mean copy number of HER2 and the HER2/CEP17 ratios between the WNFISH and TTFISH groups. No significant differences were observed in HER2 amplified, equivocal and non-amplified HER2 samples. Thirty-seven cases of CEP17 polysomy and 72 cases of non‑polysomy were detected by WNFISH. Twenty-nine cases of CEP17 polysomy and 72 cases of non-polysomy were detected by TTFISH. Significant differences were observed between the two methods using the McNemar test (P=0.039). In conclusion, detection of chromosome 17 polysomy in breast cancer with fluorescence in situ hybridization using thin tissue sections may cause the loss of CEP17 and HER2 signals.
Collapse
Affiliation(s)
- Huiyong Jiang
- Department of General Surgery, General Hospital of Shenyang Military Area Command, Shenyang, Liaoning 110840, P.R. China
| | - Xiaoyan Bai
- Department of Nephrology, Nanfang Hospital and Guangdong Provincial Institute of Nephrology, Guangzhou, Guangdong 510515, P.R. China
| | - Tong Zhao
- Department of Nephrology, Nanfang Hospital and Guangdong Provincial Institute of Nephrology, Guangzhou, Guangdong 510515, P.R. China
| | - Cheng Zhang
- Department of General Surgery, General Hospital of Shenyang Military Area Command, Shenyang, Liaoning 110840, P.R. China
| | - Xuefeng Zhang
- Department of General Surgery, General Hospital of Shenyang Military Area Command, Shenyang, Liaoning 110840, P.R. China
| |
Collapse
|
21
|
Cufí S, Vazquez-Martin A, Oliveras-Ferraros C, Corominas-Faja B, Cuyàs E, López-Bonet E, Martin-Castillo B, Joven J, Menendez JA. The anti-malarial chloroquine overcomes primary resistance and restores sensitivity to trastuzumab in HER2-positive breast cancer. Sci Rep 2014; 3:2469. [PMID: 23965851 PMCID: PMC3749547 DOI: 10.1038/srep02469] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 07/29/2013] [Indexed: 12/18/2022] Open
Abstract
Autophagy may control the de novo refractoriness of HER2 gene-amplified breast carcinomas to the monoclonal antibody trastuzumab (Herceptin). Tumor cells originally obtained from a patient who rapidly progressed on trastuzumab ab initio display increased cellular levels of the LC3-II protein--a finding that correlates with increased numbers of autophagosomes--and decreased levels of the autophagy receptor p62/SQSTM1, a protein selectively degraded by autophagy. Trastuzumab-refractory cells are in a state of "autophagy addiction" because genetic ablation of autophagy-specific genes (ATG8, ATG5, ATG12) notably reduces intrinsic refractoriness to trastuzumab. When the anti-malarial lysosomotropic drug chloroquine impedes autophagic resolution of the accumulation of autophagolysosomes formed in the presence of trastuzumab, cells commit to die by apoptosis. Accordingly, combination treatment with trastuzumab and chloroquine radically suppresses tumor growth by > 90% in a tumor xenograft completely refractory to trastuzumab. Adding chloroquine to trastuzumab-based regimens may therefore improve outcomes among women with autophagy-addicted HER2-positive breast cancer.
Collapse
Affiliation(s)
- Sílvia Cufí
- 1] Metabolism & Cancer Group, Translational Research Laboratory, Catalan Institute of Oncology-Girona (ICO-Girona), Girona, Spain [2] Molecular Oncology, Girona Biomedical Research Institute (IDIBGi), Girona, Spain [3]
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Abstract
Sorafenib (BAY 43-9006, Nexavar®) is an oral multiple tyrosine kinase inhibitor. Main targets are receptor tyrosine kinase pathways frequently deregulated in cancer such as the Raf-Ras pathway, vascular endothelial growth factor (VEGF) pathway, and FMS-like tyrosine kinase 3 (FLT3). Sorafenib was approved by the FDA in fast track for advanced renal cell cancer and hepatocellular cancer and shows good clinical activity in thyroid cancer. Multiple clinical trials are undertaken to further investigate the role of sorafenib alone or in combination for the treatment of various tumor entities.
Collapse
Affiliation(s)
- Jens Hasskarl
- Department Innere Medizin, Klinik für Innere Medizin I, Schwerpunkt Hämatologie, Onkologie und Stammzelltransplantation, Hugstetter Str. 55, 79102, Freiburg, Germany,
| |
Collapse
|
23
|
De Luca A, D'Alessio A, Gallo M, Maiello MR, Bode AM, Normanno N. Src and CXCR4 are involved in the invasiveness of breast cancer cells with acquired resistance to lapatinib. Cell Cycle 2013; 13:148-56. [PMID: 24200972 DOI: 10.4161/cc.26899] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Lapatinib is a dual EGFR and ErbB-2 tyrosine kinase inhibitor that has significantly improved the clinical outcome of ErbB-2-overexpressing breast cancer patients. However, patients inexorably develop mechanisms of resistance that limit the efficacy of the drug. In order to identify potential targets for therapeutic intervention in lapatinib-resistant patients, we isolated, from ErbB-2-overexpressing SK-Br-3 breast cancer cells, the SK-Br-3 Lap-R-resistant subclone, which is able to routinely grow in 1 µM lapatinib. Resistant cells have a more aggressive phenotype compared with parental cells, as they show a higher ability to invade through a matrigel-coated membrane. Lapatinib-resistant cells have an increased Src kinase activity and persistent levels of activation of ERK1/2 and AKT compared with parental cells. Treatment with the Src inhibitor saracatinib in combination with lapatinib reduces AKT and ERK1/2 phosphorylation and restores the sensitivity of resistant cells to lapatinib. SK-Br-3 Lap-R cells also show levels of expression of CXCR4 that are higher compared with parental cells and are not affected by Src inhibition. Treatment with saracatinib or a specific CXCR4 antibody reduces the invasive ability of SK-Br-3 Lap-R cells, with the two drugs showing cooperative effects. Finally, blockade of Src signaling significantly increases TRAIL-induced cell death in SK-Br-3 Lap-R cells. Taken together, our results demonstrate that breast cancer cells with acquired resistance to lapatinib have a more aggressive phenotype compared with their parental counterpart, and that Src signaling and CXCR4 play an important role in this phenomenon, thus representing potential targets for therapeutic intervention in lapatinib-resistant breast cancer patients.
Collapse
Affiliation(s)
- Antonella De Luca
- Cell Biology and Biotherapy Unit; Istituto Nazionale per lo Studio e la Cura dei Tumori "Fondazione Giovanni Pascale"; IRCCS; Naples, Italy
| | - Amelia D'Alessio
- Cell Biology and Biotherapy Unit; Istituto Nazionale per lo Studio e la Cura dei Tumori "Fondazione Giovanni Pascale"; IRCCS; Naples, Italy
| | - Marianna Gallo
- Cell Biology and Biotherapy Unit; Istituto Nazionale per lo Studio e la Cura dei Tumori "Fondazione Giovanni Pascale"; IRCCS; Naples, Italy
| | - Monica R Maiello
- Cell Biology and Biotherapy Unit; Istituto Nazionale per lo Studio e la Cura dei Tumori "Fondazione Giovanni Pascale"; IRCCS; Naples, Italy
| | - Ann M Bode
- The Hormel Institute; University of Minnesota; Austin, MN USA
| | - Nicola Normanno
- Cell Biology and Biotherapy Unit; Istituto Nazionale per lo Studio e la Cura dei Tumori "Fondazione Giovanni Pascale"; IRCCS; Naples, Italy
| |
Collapse
|
24
|
Fumarola C, Caffarra C, La Monica S, Galetti M, Alfieri RR, Cavazzoni A, Galvani E, Generali D, Petronini PG, Bonelli MA. Effects of sorafenib on energy metabolism in breast cancer cells: role of AMPK-mTORC1 signaling. Breast Cancer Res Treat 2013; 141:67-78. [PMID: 23963659 DOI: 10.1007/s10549-013-2668-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 08/09/2013] [Indexed: 12/18/2022]
Abstract
In this study, we investigated the effects and the underlying molecular mechanisms of the multi-kinase inhibitor sorafenib in a panel of breast cancer cell lines. Sorafenib inhibited cell proliferation and induced apoptosis through the mitochondrial pathway. These effects were neither correlated with modulation of MAPK and AKT pathways nor dependent on the ERα status. Sorafenib promoted an early perturbation of mitochondrial function, inducing a deep depolarization of mitochondrial membrane, associated with drop of intracellular ATP levels and increase of ROS generation. As a response to this stress condition, the energy sensor AMPK was rapidly activated in all the cell lines analyzed. In MCF-7 and SKBR3 cells, AMPK enhanced glucose uptake by up-regulating the expression of GLUT-1 glucose transporter, as also demonstrated by AMPKα1 RNA interference, and stimulated aerobic glycolysis thus increasing lactate production. Moreover, the GLUT-1 inhibitor fasentin blocked sorafenib-induced glucose uptake and potentiated its cytotoxic activity in SKBR3 cells. Persistent activation of AMPK by sorafenib finally led to the impairment of glucose metabolism both in MCF-7 and SKBR3 cells as well as in the highly glycolytic MDA-MB-231 cells, resulting in cell death. This previously unrecognized long-term effect of sorafenib was mediated by AMPK-dependent inhibition of the mTORC1 pathway. Suppression of mTORC1 activity was sufficient for sorafenib to hinder glucose utilization in breast cancer cells, as demonstrated by the observation that the mTORC1 inhibitor rapamycin induced a comparable down-regulation of GLUT-1 expression and glucose uptake. The key role of AMPK-dependent inhibition of mTORC1 in sorafenib mechanisms of action was confirmed by AMPKα1 silencing, which restored mTORC1 activity conferring a significant protection from cell death. This study provides insights into the molecular mechanisms driving sorafenib anti-tumoral activity in breast cancer, and supports the need for going on with clinical trials aimed at proving the efficacy of sorafenib for breast cancer treatment.
Collapse
Affiliation(s)
- Claudia Fumarola
- Department of Clinical and Experimental Medicine, University of Parma, Via Volturno, 39, Parma 43125, Italy.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Current World Literature. Curr Opin Obstet Gynecol 2013; 25:81-9. [DOI: 10.1097/gco.0b013e32835cc6b6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
26
|
Khanal P, Yun HJ, Lim SC, Ahn SG, Yoon HE, Kang KW, Hong R, Choi HS. Proyl isomerase Pin1 facilitates ubiquitin-mediated degradation of cyclin-dependent kinase 10 to induce tamoxifen resistance in breast cancer cells. Oncogene 2012; 31:3845-56. [PMID: 22158035 DOI: 10.1038/onc.2011.548] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Endocrine therapies that inhibit estrogen receptor (ER)-α signaling are the most common and effective treatment for ER-α-positive breast cancer. However, the use of these agents is limited by the frequent development of resistance. The aim of this study was to elucidate the mechanisms by which downregulation of CDK10 expression confers resistance to tamoxifen in breast cancer. Here, we show that peptidyl-prolyl isomerase Pin1 downregulates CDK10 protein as a result of its interaction with and ubiquitination of CDK10, thereby affecting CDK10-dependent Raf-1 phosphorylation (S338). Pin1(-/-) mouse embryonic fibroblasts (MEFs) show higher CDK10 expression than Pin1(+/+) MEFs, whereas CDK10 protein was downregulated in the rescued Pin1(-/-) MEFs after reexpression of Pin1. Pin1 silencing in SKBR-3 and MCF7 cells increased the CDK10 expression. In human tamoxifen-resistant breast cancer and tamoxifen-resistant MCF7 cells, immunohistochemical staining and immunoblotting analysis shows an inverse correlation between the expression of CDK10 and the degree of tamoxifen resistance. There was also a positive correlation between the high level of P-Raf-1 (Ser338) and Pin1 in human tamoxifen-resistant breast cancer and tamoxifen-resistant MCF7 (TAMR-MCF7) cells. Importantly, 4-OH tamoxifen (4-OHT), when used in combination with overexpressed CDK10 or Raf-1 inhibitor, increased cleaved PARP and DNA fragmentation to inhibit cologenic growth of MCF7 cells and Tamoxifen-resistant MCF7 cells, respectively. On the basis of these findings, we suggest that the Pin1-mediated CDK10 ubiquitination is a major regulator of tamoxifen-resistant breast cancer cell growth and survival.
Collapse
Affiliation(s)
- P Khanal
- BK21 Project Team, College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Lee JH, Kim DG, Bae TJ, Rho K, Kim JT, Lee JJ, Jang Y, Kim BC, Park KM, Kim S. CDA: combinatorial drug discovery using transcriptional response modules. PLoS One 2012; 7:e42573. [PMID: 22905152 PMCID: PMC3414439 DOI: 10.1371/journal.pone.0042573] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 07/09/2012] [Indexed: 11/18/2022] Open
Abstract
Background Anticancer therapies that target single signal transduction pathways often fail to prevent proliferation of cancer cells because of overlapping functions and cross-talk between different signaling pathways. Recent research has identified that balanced multi-component therapies might be more efficacious than highly specific single component therapies in certain cases. Ideally, synergistic combinations can provide 1) increased efficacy of the therapeutic effect 2) reduced toxicity as a result of decreased dosage providing equivalent or increased efficacy 3) the avoidance or delayed onset of drug resistance. Therefore, the interest in combinatorial drug discovery based on systems-oriented approaches has been increasing steadily in recent years. Methodology Here we describe the development of Combinatorial Drug Assembler (CDA), a genomics and bioinformatics system, whereby using gene expression profiling, multiple signaling pathways are targeted for combinatorial drug discovery. CDA performs expression pattern matching of signaling pathway components to compare genes expressed in an input cell line (or patient sample data), with expression patterns in cell lines treated with different small molecules. Then it detects best pattern matching combinatorial drug pairs across the input gene set-related signaling pathways to detect where gene expression patterns overlap and those predicted drug pairs could likely be applied as combination therapy. We carried out in vitro validations on non-small cell lung cancer cells and triple-negative breast cancer (TNBC) cells. We found two combinatorial drug pairs that showed synergistic effect on lung cancer cells. Furthermore, we also observed that halofantrine and vinblastine were synergistic on TNBC cells. Conclusions CDA provides a new way for rational drug combination. Together with phExplorer, CDA also provides functional insights into combinatorial drugs. CDA is freely available at http://cda.i-pharm.org.
Collapse
Affiliation(s)
- Ji-Hyun Lee
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
- Information Center for Bio-pharmacological Network, Seoul National University, Suwon, South Korea
| | - Dae Gyu Kim
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
| | - Tae Jeong Bae
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
- Information Center for Bio-pharmacological Network, Seoul National University, Suwon, South Korea
| | - Kyoohyoung Rho
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
- Information Center for Bio-pharmacological Network, Seoul National University, Suwon, South Korea
| | - Ji-Tae Kim
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
- Information Center for Bio-pharmacological Network, Seoul National University, Suwon, South Korea
| | - Jong-Jun Lee
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
| | - Yeongjun Jang
- Korean BioInformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Deajeon, South Korea
| | - Byung Cheol Kim
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
| | - Kyoung Mii Park
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
- Information Center for Bio-pharmacological Network, Seoul National University, Suwon, South Korea
| | - Sunghoon Kim
- Medicinal Bioconvergence Research Center, Seoul National University, Seoul, South Korea
- WCU Department of Molecular Medicine and Biopharmaceutical Sciences, Seoul National University, Seoul, South Korea
- * E-mail:
| |
Collapse
|
28
|
Nahta R. Pharmacological strategies to overcome HER2 cross-talk and Trastuzumab resistance. Curr Med Chem 2012; 19:1065-75. [PMID: 22229414 DOI: 10.2174/092986712799320691] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 12/28/2011] [Accepted: 12/29/2011] [Indexed: 01/23/2023]
Abstract
Approximately 20-30% of breast cancers show increased expression of the HER2 receptor tyrosine kinase. Trastuzumab (Herceptin) is a clinically approved anti-HER2 monoclonal antibody. Many patients with HER2-overexpressing metastatic breast cancer respond to trastuzumab; however, a subset display primary drug resistance. In addition, many patients who initially respond to trastuzumab ultimately develop disease progression. Multiple molecular mechanisms contributing to trastuzumab resistance have been proposed in the literature. These mechanisms include cross-signaling from related HER/erbB receptors and compensatory signaling from receptors outside of the HER/erbB family, including receptors for insulin-like growth factor-I, vascular endothelial growth factor, and transforming growth factor beta. The major downstream signaling pathway activated by HER2 cross-talk is PI3K/mTOR, and a potential integrator of receptor cross-talk is Src-focal adhesion kinase (FAK) signaling. PI3K, Src, and FAK have independently been implicated in trastuzumab resistance. In this review, we will discuss pharmacological inhibition of HER2 cross-talk as a strategy to treat trastuzumab-refractory HER2-overexpresssing breast cancer.
Collapse
Affiliation(s)
- R Nahta
- Departments of Pharmacology, Emory University School of Medicine, USA.
| |
Collapse
|
29
|
Rexer BN, Arteaga CL. Intrinsic and acquired resistance to HER2-targeted therapies in HER2 gene-amplified breast cancer: mechanisms and clinical implications. Crit Rev Oncog 2012; 17:1-16. [PMID: 22471661 DOI: 10.1615/critrevoncog.v17.i1.20] [Citation(s) in RCA: 247] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Approximately 25% of human breast cancers overexpress the HER2 (ErbB2) proto-oncogene, which confers a more aggressive tumor phenotype and associates with a poor prognosis in patients with this disease. Two approved therapies targeting HER2, the monoclonal antibody trastuzumab and the tyrosine kinase inhibitor lapatinib, are clinically active against this type of breast cancer. However, a significant fraction of patients with HER2+ breast cancer treated with these agents eventually relapse or develop progressive disease. This suggests that tumors acquire or possess intrinsic mechanisms of resistance that allow escape from HER2 inhibition. This review focuses on mechanisms of intrinsic and/or acquired resistance to HER2-targeted therapies that have been identified in preclinical and clinical studies. These mechanisms involve alterations to HER2 itself, coexpression or acquisition of bypass signaling through other receptor or intracellular signaling pathways, defects in mechanisms of cell cycle regulation or apoptosis, and host factors that may modulate drug response. Emerging clinical evidence already suggests that combinations of therapies targeting HER2 as well as these resistance pathways will be effective in overcoming or preventing resistance.
Collapse
Affiliation(s)
- Brent N Rexer
- Departments of Medicine and Cancer Biology, Breast Cancer Research Program, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37212, USA
| | | |
Collapse
|
30
|
LUISTRO LEOPOLDOL, ROSINSKI JAMESA, BIAN HONGJIN, BISHAYEE SUBAL, RAMESHWAR PRANELA, PONZIO NICHOLASM, RITLAND STEVER. Development and characterization of a preclinical ovarian carcinoma model to investigate the mechanism of acquired resistance to trastuzumab. Int J Oncol 2012; 41:639-51. [DOI: 10.3892/ijo.2012.1463] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 02/27/2012] [Indexed: 11/05/2022] Open
|
31
|
Nahta R. New developments in the treatment of HER2-positive breast cancer. BREAST CANCER-TARGETS AND THERAPY 2012; 4:53-64. [PMID: 23869176 DOI: 10.2147/bctt.s24976] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Approximately 20%-30% of metastatic breast cancers show increased expression of the human epidermal growth factor receptor-2 (HER2) tyrosine kinase. Two HER2-specific therapies are currently approved for clinical treatment of patients with HER2-overexpressing metastatic breast cancer. Trastuzumab is a monoclonal antibody against HER2 and is approved for first-line treatment of HER2-positive metastatic breast cancer. Lapatinib is a small molecule dual inhibitor of epidermal growth factor receptor and HER2 tyrosine kinases, and is approved for trastuzumab-refractory disease. Although trastuzumab is a highly effective therapy for patients with HER2-overexpressing metastatic breast cancer, a significant number of patients in the initial clinical trials of trastuzumab monotherapy showed resistance to trastuzumab-based therapy. Further, among those who did respond, the initial trials indicated that the median time to progression was less than 1 year. Similarly, lapatinib is effective in a subset of trastuzumab-refractory cases, but the majority of patients display resistance. This review discusses the multiple molecular mechanisms of resistance that have been proposed in the literature. In addition, novel agents that are being tested for efficacy against HER2-positive breast cancer, including the antibodies pertuzumab and trastuzumab-DM1 and the immunotoxin affitoxin, are reviewed. The introduction of trastuzumab has revolutionized the clinical care of patients with HER2-positive metastatic breast cancer and has resulted in dramatic reductions in recurrences of early-stage HER2-positive breast cancer. The development and implementation of gene- and protein-based assays that measure potential molecular predictors of trastuzumab resistance will allow individualization of HER2-targeted therapeutic approaches, and may ultimately improve treatment of HER2-positive breast cancer.
Collapse
Affiliation(s)
- Rita Nahta
- Departments of Pharmacology and Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA, USA
| |
Collapse
|
32
|
Bailey TA, Luan H, Clubb RJ, Naramura M, Band V, Raja SM, Band H. Mechanisms of Trastuzumab resistance in ErbB2-driven breast cancer and newer opportunities to overcome therapy resistance. J Carcinog 2011; 10:28. [PMID: 22190870 PMCID: PMC3243087 DOI: 10.4103/1477-3163.90442] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2011] [Accepted: 10/20/2011] [Indexed: 12/31/2022] Open
Abstract
The Human Epidermal Growth Factor Receptor 2 (Her2, ErbB2 or Neu) is overexpressed in about 20 – 25% of breast cancers and is causally linked to oncogenesis, providing opportunities for targeted therapy. Trastuzumab (Herceptin™, Genentech Inc, San Francisco, CA), a humanized monoclonal antibody against ErbB2, is a successful example of this concept and has vastly improved the response to treatment and overall survival in a majority of ErbB2+ breast cancer patients. However, lack of response in some patients as well as relapse during the course of therapy in others, continue to challenge researchers and clinicians alike towards a better understanding of the fundamental mechanisms of Trastuzumab action and resistance to treatment. The exact in vivo mechanism of action of Trastuzumab remains enigmatic, given its direct effects on the ErbB2 signaling pathway as well as indirect contributions from the immune system, by virtue of the ability of Trastuzumab to elicit Antibody-Dependent Cellular Cytotoxicity. Consequently, multiple mechanisms of resistance have been proposed. We present here a comprehensive review of our current understanding of the mechanisms, both of Trastuzumab action and clinical resistance to Trastuzumab-based therapies. We also review newer strategies (based on ErbB2 receptor biology) that are being explored to overcome resistance to Trastuzumab therapy.
Collapse
Affiliation(s)
- Tameka A Bailey
- Eppley Institute for Research in Cancer and Allied Diseases, College of Medicine, University of Nebraska Medical Center, 985950 Nebraska Medical Center Omaha, NE, USA
| | | | | | | | | | | | | |
Collapse
|
33
|
Crawford A, Nahta R. Targeting Bcl-2 in Herceptin-Resistant Breast Cancer Cell Lines. ACTA ACUST UNITED AC 2011; 9:184-190. [PMID: 22162984 DOI: 10.2174/187569211796957584] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Acquired resistance to Herceptin is a major clinical problem in the treatment of HER2-overexpressing breast cancer. Understanding the molecular mechanisms leading to resistance will allow identification of novel therapeutic targets and predictors of therapeutic response. To this end, up-regulation of anti-apoptotic proteins has been associated with resistance to the HER2-targeted drug lapatinib, but has not yet been linked to Herceptin resistance. The aim of the current study was to determine if the Bcl-2 anti-apoptotic protein is a potential therapeutic target in cells with acquired Herceptin resistance. The BT474 HER2-overexpressing breast cancer cell line and BT474-derived acquired Herceptin-resistant clones were used as models in this study. Bcl-2 and Bax expression were assessed by Western blotting. Proliferation assays were performed on cells treated with the Bcl-2 inhibitor ABT-737 in the absence or presence of Herceptin. Finally, the effect of PI3K inhibition or IKK inhibition on Bcl-2 expression and Herceptin sensitivity was examined by Western blotting and established proliferation assays. We show that cells with acquired resistance to Herceptin have an increased Bcl-2:Bax ratio. Resistant cells have increased sensitivity to ABT-737. Further, pharmacologic inhibition of Bcl-2 improved sensitivity to Herceptin in acquired resistant cells. Finally, PI3K and IKK inhibition down-regulated Bcl-2 expression and increased sensitivity to Herceptin in resistant cells. Taken together, these new observations support further study of Bcl-2-targeted therapies in Herceptin-resistant breast cancers, and importantly, future investigation of Bcl-2 expression as a potential predictor of Herceptin response in patients with HER2-overexpressing breast cancer.
Collapse
Affiliation(s)
- Anatasha Crawford
- Department of Pharmacology, Emory University School of Medicine, Atlanta, GA, USA
| | | |
Collapse
|
34
|
Lopus M. Antibody-DM1 conjugates as cancer therapeutics. Cancer Lett 2011; 307:113-8. [PMID: 21481526 DOI: 10.1016/j.canlet.2011.03.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 03/11/2011] [Accepted: 03/18/2011] [Indexed: 11/26/2022]
Abstract
Synthetic derivatives of the microtubule-targeted agent maytansine, commonly known as drug maytansinoids or DMs, are emerging as potential cancer therapeutics. DM1 is an antibody-conjugatable maytansinoid that was developed to overcome systemic toxicity associated with maytansine and to enhance tumor-specific delivery. Antibody-DM1 conjugates showed promising results in preclinical and clinical evaluations. However, the molecular mechanism of the drug component DM1 was largely unknown. Recently, researchers have examined the mechanism of DM1 at molecular and cellular levels. According to their findings, DM1 binds at the tips of microtubules and suppresses the dynamicity of microtubules. The antibody-DM1 conjugate cleaves inside cells and releases the active drug in a time-dependent manner. The suppression of microtubule dynamics by DM1 induces mitotic arrest and cell death.
Collapse
Affiliation(s)
- Manu Lopus
- Department of Molecular, Cellular, and Developmental Biology, and the Neuroscience Research Institute, University of California, Santa Barbara, CA 93106, USA.
| |
Collapse
|