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Abstract
Solid tumor growth and metastasis require the interaction of tumor cells with the surrounding tissue, leading to a view of tumors as tissue-level phenomena rather than exclusively cell-intrinsic anomalies. Due to the ubiquitous nature of adipose tissue, many types of solid tumors grow in proximate or direct contact with adipocytes and adipose-associated stromal and vascular components, such as fibroblasts and other connective tissue cells, stem and progenitor cells, endothelial cells, innate and adaptive immune cells, and extracellular signaling and matrix components. Excess adiposity in obesity both increases risk of cancer development and negatively influences prognosis in several cancer types, in part due to interaction with adipose tissue cell populations. Herein, we review the cellular and noncellular constituents of the adipose "organ," and discuss the mechanisms by which these varied microenvironmental components contribute to tumor development, with special emphasis on obesity. Due to the prevalence of breast and prostate cancers in the United States, their close anatomical proximity to adipose tissue depots, and their complex epidemiologic associations with obesity, we particularly highlight research addressing the contribution of adipose tissue to the initiation and progression of these cancer types. Obesity dramatically modifies the adipose tissue microenvironment in numerous ways, including induction of fibrosis and angiogenesis, increased stem cell abundance, and expansion of proinflammatory immune cells. As many of these changes also resemble shifts observed within the tumor microenvironment, proximity to adipose tissue may present a hospitable environment to developing tumors, providing a critical link between adiposity and tumorigenesis. © 2018 American Physiological Society. Compr Physiol 8:237-282, 2018.
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Affiliation(s)
- Alyssa J. Cozzo
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ashley M. Fuller
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Liza Makowski
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- University of Tennessee Health Science Center, Memphis, TN, USA
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102
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Tchou J, Zhao Y, Levine BL, Zhang PJ, Davis MM, Melenhorst JJ, Kulikovskaya I, Brennan AL, Liu X, Lacey SF, Posey AD, Williams AD, So A, Conejo-Garcia JR, Plesa G, Young RM, McGettigan S, Campbell J, Pierce RH, Matro JM, DeMichele AM, Clark AS, Cooper LJ, Schuchter LM, Vonderheide RH, June CH. Safety and Efficacy of Intratumoral Injections of Chimeric Antigen Receptor (CAR) T Cells in Metastatic Breast Cancer. Cancer Immunol Res 2017; 5:1152-1161. [PMID: 29109077 PMCID: PMC5712264 DOI: 10.1158/2326-6066.cir-17-0189] [Citation(s) in RCA: 306] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 08/24/2017] [Accepted: 10/19/2017] [Indexed: 11/16/2022]
Abstract
Chimeric antigen receptors (CAR) are synthetic molecules that provide new specificities to T cells. Although successful in treatment of hematologic malignancies, CAR T cells are ineffective for solid tumors to date. We found that the cell-surface molecule c-Met was expressed in ∼50% of breast tumors, prompting the construction of a CAR T cell specific for c-Met, which halted tumor growth in immune-incompetent mice with tumor xenografts. We then evaluated the safety and feasibility of treating metastatic breast cancer with intratumoral administration of mRNA-transfected c-Met-CAR T cells in a phase 0 clinical trial (NCT01837602). Introducing the CAR construct via mRNA ensured safety by limiting the nontumor cell effects (on-target/off-tumor) of targeting c-Met. Patients with metastatic breast cancer with accessible cutaneous or lymph node metastases received a single intratumoral injection of 3 × 107 or 3 × 108 cells. CAR T mRNA was detectable in peripheral blood and in the injected tumor tissues after intratumoral injection in 2 and 4 patients, respectively. mRNA c-Met-CAR T cell injections were well tolerated, as none of the patients had study drug-related adverse effects greater than grade 1. Tumors treated with intratumoral injected mRNA c-Met-CAR T cells were excised and analyzed by immunohistochemistry, revealing extensive tumor necrosis at the injection site, cellular debris, loss of c-Met immunoreactivity, all surrounded by macrophages at the leading edges and within necrotic zones. We conclude that intratumoral injections of mRNA c-Met-CAR T cells are well tolerated and evoke an inflammatory response within tumors. Cancer Immunol Res; 5(12); 1152-61. ©2017 AACR.
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MESH Headings
- Adult
- Aged
- Animals
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/immunology
- Biomarkers, Tumor
- Breast Neoplasms/genetics
- Breast Neoplasms/immunology
- Breast Neoplasms/pathology
- Breast Neoplasms/therapy
- Cell Line, Tumor
- Cytotoxicity, Immunologic
- Disease Models, Animal
- Female
- Gene Expression
- Humans
- Immunotherapy
- Mice
- Middle Aged
- Proto-Oncogene Proteins c-met/genetics
- Proto-Oncogene Proteins c-met/immunology
- RNA, Messenger/genetics
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/metabolism
- Recombinant Fusion Proteins
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Treatment Outcome
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Julia Tchou
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Yangbing Zhao
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Bruce L Levine
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Paul J Zhang
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Megan M Davis
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jan Joseph Melenhorst
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Irina Kulikovskaya
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Andrea L Brennan
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Xiaojun Liu
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Simon F Lacey
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Avery D Posey
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Austin D Williams
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Alycia So
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jose R Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Gabriela Plesa
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Regina M Young
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Shannon McGettigan
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jean Campbell
- Experimental Pathology, Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Robert H Pierce
- Experimental Pathology, Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Jennifer M Matro
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Hematology-Oncology Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Pennsylvania
| | - Angela M DeMichele
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Hematology-Oncology Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Pennsylvania
| | - Amy S Clark
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Hematology-Oncology Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Pennsylvania
| | - Laurence J Cooper
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Lynn M Schuchter
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Hematology-Oncology Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Pennsylvania
| | - Robert H Vonderheide
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Hematology-Oncology Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Pennsylvania
| | - Carl H June
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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103
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Golden BO, Griess B, Mir S, Fitzgerald M, Kuperwasser C, Domann F, Teoh-Fitzgerald M. Extracellular superoxide dismutase inhibits hepatocyte growth factor-mediated breast cancer-fibroblast interactions. Oncotarget 2017; 8:107390-107408. [PMID: 29296173 PMCID: PMC5746075 DOI: 10.18632/oncotarget.22379] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 10/25/2017] [Indexed: 11/25/2022] Open
Abstract
We have previously shown tumor suppressive effects of extracellular superoxide dismutase, EcSOD in breast cancer cells. In this study, an RTK signaling array revealed an inhibitory effect of EcSOD on c-Met phosphorylation and its downstream kinase c-Abl in MDA-MB231 cells. Moreover, an extracellular protein array showed that thrombospondin 1 (TSP-1), a scavenger of the c-Met ligand, hepatocyte growth factor (HGF) is significantly up-regulated in EcSOD overexpressing cells (Ec.20). We further determined the effects of EcSOD on HGF/c-Met-mediated cancer-fibroblast interactions by co-culturing normal fibroblasts (RMF) or RMF which overexpresses HGF (RMF-HGF) with MDA-MB231 cells. We observed that while RMF-HGF significantly promoted Matrigel growth of MDA-MB231, overexpression of EcSOD inhibited the HGF-stimulated growth. Similarly, a SOD mimetic, MnTE-2-PyP, inhibited HGF-induced growth and invasion of MDA-MB231. In addition, a long-term heterotypic co-culture study not only showed that Ec.20 cells are resistant to RMF-HGF-induced invasive stimulation but RMF-HGF that were co-cultured with Ec.20 cells showed an attenuated phenotype, suggesting an oxidative-mediated reciprocal interaction between the two cell types. In addition, we demonstrated that RMF-HGF showed an up-regulation of an ROS-generating enzyme, NADPH oxidase 4 (Nox4). Targeting this pro-oxidant significantly suppressed the activated phenotype of RMF-HGF in a collagen contraction assay, suggesting that RMF-HGF contributes to the oxidative tumor microenvironment. We have further shown that scavenging ROS with EcSOD significantly inhibited RMF-HGF-stimulated orthotopic tumor growth of MDA-MB231. This study suggests the loss of EcSOD in breast cancer plays a pivotal role in promoting the HGF/c-Met-mediated cancer-fibroblast interactions.
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Affiliation(s)
- Briana Ormsbee Golden
- Department of Biochemistry and Molecular Biology, Fred and Pamela Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Brandon Griess
- Department of Biochemistry and Molecular Biology, Fred and Pamela Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Shakeel Mir
- Department of Biochemistry and Molecular Biology, Fred and Pamela Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Matthew Fitzgerald
- Department of Surgery-General Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Charlotte Kuperwasser
- Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Frederick Domann
- Free Radical and Radiation Biology Program, Radiation Oncology, University of Iowa, Iowa City, IA 52241, USA
| | - Melissa Teoh-Fitzgerald
- Department of Biochemistry and Molecular Biology, Fred and Pamela Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
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104
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Liu S, Chen B, Burugu S, Leung S, Gao D, Virk S, Kos Z, Parulekar WR, Shepherd L, Gelmon KA, Nielsen TO. Role of Cytotoxic Tumor-Infiltrating Lymphocytes in Predicting Outcomes in Metastatic HER2-Positive Breast Cancer: A Secondary Analysis of a Randomized Clinical Trial. JAMA Oncol 2017; 3:e172085. [PMID: 28750133 DOI: 10.1001/jamaoncol.2017.2085] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Importance Accumulating evidence indicates that tumor-infiltrating lymphocytes (TILs) are associated with clinical outcomes and may predict the efficacy of chemotherapy and human epidermal growth factor receptor 2 (HER2, encoded by the gene ERBB2)-targeted therapy in patients with HER2-positive breast cancer. Objective To investigate the role of TILs, particularly cytotoxic CD8+ T cells, in the prediction of outcomes in patients with HER2-positive metastatic breast cancer randomized to an antibody-based (trastuzumab) vs a small molecule-based (lapatinib) anti-HER2 therapy. Design, Setting, and Participants The Canadian Cancer Trials Group MA.31 phase 3 clinical trial accrued patients from 21 countries and randomized 652 with HER2-positive metastatic breast cancer to receive trastuzumab or lapatinib, in combination with a taxane, from January 17, 2008, through December 1, 2011. Patients had received no prior chemotherapy or HER2-targeted therapy in the metastatic setting. The median follow-up was 21.5 months (interquartile range, 14.3-31.0). The tumor tissue collected for primary diagnosis was used in this ad hoc substudy. Sections were scored for TILs on hematoxylin-eosin (H&E)-stained sections, and immunohistochemical analysis was performed to assess CD8, FOXP3, CD56, and programmed cell death protein 1 (PD-1) expression on stromal (sTILs) and intratumoral TILs. Data were analyzed from July 15, 2015, through July 27, 2016. Interventions Treatment with trastuzumab or lapatinib in combination with taxane chemotherapy (paclitaxel or docetaxel) for 24 weeks. Main Outcomes and Measures Prognostic effects of biomarkers were evaluated for progression-free survival by stratified univariate log-rank test with Kaplan-Meier curves and by multivariate Cox proportional hazards regression; predictive effects were examined with a test of interaction between treatment allocation and biomarker classification. Results Of the 647 treated women (mean [SD] age, 55.0 [10.8] years), 614 had tumor tissue samples scored for H&E sTILs and 427 for CD8 biomarker assessments. Overall H&E sTIL counts of greater than 5% (high) were present in 215 cases (35%) but did not show significant prognostic or predictive effects. Univariate stratified analyses detected a significant predictive effect on risk for progression with lapatinib compared with trastuzumab among patients with low CD8+ sTIL counts (observed hazard ratio, 2.94; 95% CI, 1.40-6.17; P = .003) and among those with high CD8+ sTIL counts (observed hazard ratio, 1.36; 95% CI, 1.05-1.75; P = .02), confirmed in stepwise multivariate analysis (interaction P = .04). Other immunohistochemistry biomarkers were not associated with prognostic or predictive effects. Conclusions and Relevance In this secondary analysis of a phase 3 randomized clinical trial, a low level of preexisting cytotoxic sTILs predicted the most benefit from an antibody- vs a small molecule-based drug against the same target. Trial Registration clinicaltrials.gov Identifier: NCT00667251.
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Affiliation(s)
- Shuzhen Liu
- Department of Pathology and Laboratory Medicine, Genetic Pathology Evaluation Centre, University of British Columbia, Vancouver, Canada
| | - Bingshu Chen
- Canadian Cancer Trials Group, Queen's University, Kingston, Ontario, Canada
| | - Samantha Burugu
- Department of Pathology and Laboratory Medicine, Genetic Pathology Evaluation Centre, University of British Columbia, Vancouver, Canada
| | - Samuel Leung
- Department of Pathology and Laboratory Medicine, Genetic Pathology Evaluation Centre, University of British Columbia, Vancouver, Canada
| | - Dongxia Gao
- Department of Pathology and Laboratory Medicine, Genetic Pathology Evaluation Centre, University of British Columbia, Vancouver, Canada
| | - Shakeel Virk
- Canadian Cancer Trials Group, Queen's University, Kingston, Ontario, Canada
| | - Zuzana Kos
- Department of Pathology and Laboratory Medicine, University of Ottawa, The Ottawa Hospital, Ottawa, Canada
| | - Wendy R Parulekar
- Canadian Cancer Trials Group, Queen's University, Kingston, Ontario, Canada
| | - Lois Shepherd
- Canadian Cancer Trials Group, Queen's University, Kingston, Ontario, Canada
| | | | - Torsten O Nielsen
- Department of Pathology and Laboratory Medicine, Genetic Pathology Evaluation Centre, University of British Columbia, Vancouver, Canada
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105
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Abstract
Breast cancer affects approximately 1 in 8 women, and it is estimated that over 246,660 women in the USA will be diagnosed with breast cancer in 2016. Breast cancer mortality has decline over the last two decades due to early detection and improved treatment. Over the last few years, there is mounting evidence to demonstrate the prominent role of receptor tyrosine kinases (RTKs) in tumor initiation and progression, and targeted therapies against the RTKs have been developed, evaluated in clinical trials, and approved for many cancer types, including breast cancer. However, not all breast cancers are the same as evidenced by the multiple subtypes of the disease, with some more aggressive than others, showing differential treatment response to different types of drugs. Moreover, in addition to canonical signaling from the cell surface, many RTKs can be trafficked to various subcellular compartments, e.g., the multivesicular body and nucleus, where they carry out critical cellular functions, such as cell proliferation, DNA replication and repair, and therapeutic resistance. In this review, we provide a brief summary on the role of a selected number of RTKs in breast cancer and describe some mechanisms of resistance to targeted therapies.
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Affiliation(s)
- Jennifer L Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA.,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, 404, Taiwan.,Department of Biotechnology, Asia University, Taichung, 413, Taiwan
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA. .,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, 404, Taiwan. .,Department of Biotechnology, Asia University, Taichung, 413, Taiwan.
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106
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Elsayed HE, Ebrahim HY, Mohyeldin MM, Siddique AB, Kamal AM, Haggag EG, El Sayed KA. Rutin as A Novel c-Met Inhibitory Lead for The Control of Triple Negative Breast Malignancies. Nutr Cancer 2017; 69:1256-1271. [PMID: 29083228 DOI: 10.1080/01635581.2017.1367936] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Triple negative breast cancer (TNBC) has high metastatic and mortality potential and lacks effective and selective therapeutic options. Aberrant dysregulation of the receptor tyrosine kinase c-Met promotes TNBC progression, motility and survival and therefore considered a valid therapeutic target. Among various identified anticancer agents, plant polyphenols (PPs) including flavonoids, have been shown to be safe and proven for their antitumor activity through modulating diverse macromolecular targets. This study reports the bioassay-guided identification of the common flavonol glycoside rutin as breast cancer cell proliferation, migration and invasion inhibitor. The cell free Z'-LYTE kinase assay, Western blot and in silico docking experiments uncovered, for the first time, c-Met kinase as a potential mechanistic target for rutin-mediated anticancer effects on TNBC cell lines. Likewise, the intraperitoneal injection of rutin at 30 mg/kg, 3X/week, significantly reduced the growth of the TNBC MDA-MB-231/GFP orthotopic xenograft in nude mouse model. These results clearly designate the functional dietary flavonoid rutin as a potential lead for the prevention and control of c-Met-dependent breast malignancies.
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Affiliation(s)
- Heba E Elsayed
- a Department of Basic Pharmaceutical Sciences, School of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana.,b Department of Pharmacognosy, Faculty of Pharmacy , Helwan University , Helwan , Cairo , Egypt
| | - Hassan Y Ebrahim
- a Department of Basic Pharmaceutical Sciences, School of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana
| | - Mohamed M Mohyeldin
- a Department of Basic Pharmaceutical Sciences, School of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana
| | - Abu Bakar Siddique
- a Department of Basic Pharmaceutical Sciences, School of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana
| | - Amel M Kamal
- b Department of Pharmacognosy, Faculty of Pharmacy , Helwan University , Helwan , Cairo , Egypt
| | - Eman G Haggag
- b Department of Pharmacognosy, Faculty of Pharmacy , Helwan University , Helwan , Cairo , Egypt
| | - Khalid A El Sayed
- a Department of Basic Pharmaceutical Sciences, School of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana
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107
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Maroni P, Puglisi R, Mattia G, Carè A, Matteucci E, Bendinelli P, Desiderio MA. In bone metastasis miR-34a-5p absence inversely correlates with Met expression, while Met oncogene is unaffected by miR-34a-5p in non-metastatic and metastatic breast carcinomas. Carcinogenesis 2017; 38:492-503. [PMID: 28334277 DOI: 10.1093/carcin/bgx027] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 03/13/2017] [Indexed: 12/12/2022] Open
Abstract
The highlight of the molecular basis and therapeutic targets of the bone-metastatic process requires the identification of biomarkers of metastasis colonization. Here, we studied miR-34a-5p expression, and Met-receptor expression and localization in bone metastases from ductal breast carcinomas, and in ductal carcinomas without history of metastasis (20 cases). miR-34a-5p was elevated in non-metastatic breast carcinoma, intermediate in the adjacent tissue and practically absent in bone metastases, opposite to pair-matched carcinoma. Met-receptor biomarker was highly expressed and inversely correlated with miR-34a-5p using the same set of bone-metastasis tissues. The miR-34a-5p silencing might depend on aberrant-epigenetic mechanisms of plastic-bone metastases, since in 1833 cells under methyltransferase blockade miR-34a-5p augmented. In fact, 1833 cells showed very low endogenous miR-34a-5p, in respect to parental MDA-MB231 breast carcinoma cells, and the restoration of miR-34a-5p with the mimic reduced Met and invasiveness. Notably, hepatocyte growth factor (HGF)-dependent Met stabilization was observed in bone-metastatic 1833 cells, consistent with Met co-distribution with the ligand HGF at plasma membrane and at nuclear levels in bone metastases. Met-protein level was higher in non-metastatic (low grade) than in metastatic (high grade) breast carcinomas, notwithstanding miR-34a-5p-elevated expression in both the specimens. Thus, mostly in non-metastatic carcinomas the elevated miR-34a-5p unaffected Met, important for invasive/mesenchymal phenotype, while possibly targeting some stemness biomarkers related to metastatic phenotype. In personalized therapies against bone metastasis, we suggest miR-34a-5p as a suitable target of epigenetic reprogramming leading to the accumulation of miR-34a-5p and the down-regulation of Met-tyrosine kinase, a key player of the bone-metastatic process.
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Affiliation(s)
- Paola Maroni
- Istituto Ortopedico Galeazzi, IRCCS, Milano 20161, Italy
| | - Rossella Puglisi
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Roma 00161, Italy and
| | - Gianfranco Mattia
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Roma 00161, Italy and
| | - Alessandra Carè
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Roma 00161, Italy and
| | - Emanuela Matteucci
- Dipartimento di Scienze Biomediche per la Salute, Molecular Pathology Laboratory, Università degli Studi di Milano, Milano 20133, Italy
| | - Paola Bendinelli
- Dipartimento di Scienze Biomediche per la Salute, Molecular Pathology Laboratory, Università degli Studi di Milano, Milano 20133, Italy
| | - Maria Alfonsina Desiderio
- Dipartimento di Scienze Biomediche per la Salute, Molecular Pathology Laboratory, Università degli Studi di Milano, Milano 20133, Italy
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108
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Svetlovska D, Miskovska V, Cholujova D, Gronesova P, Cingelova S, Chovanec M, Sycova-Mila Z, Obertova J, Palacka P, Rajec J, Kalavska K, Usakova V, Luha J, Ondrus D, Spanik S, Mardiak J, Mego M. Plasma Cytokines Correlated With Disease Characteristics, Progression-Free Survival, and Overall Survival in Testicular Germ-Cell Tumor Patients. Clin Genitourin Cancer 2017; 15:411-416.e2. [DOI: 10.1016/j.clgc.2017.01.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/25/2017] [Accepted: 01/28/2017] [Indexed: 12/23/2022]
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109
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Hypoxic pathobiology of breast cancer metastasis. Biochim Biophys Acta Rev Cancer 2017; 1868:239-245. [PMID: 28526262 DOI: 10.1016/j.bbcan.2017.05.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 05/13/2017] [Accepted: 05/13/2017] [Indexed: 12/14/2022]
Abstract
Dissemination of breast cancer cells (BCCs) to distant sites (metastasis) is the ultimate cause of mortality in patients with breast cancer. Hypoxia (low O2) is a microenvironmental hallmark of most solid cancers arising as a mismatch between cellular O2 consumption and supply. Hypoxic selection of BCCs triggers molecular and cellular adaptations dependent upon hypoxia-inducible factors (HIFs), a family of evolutionarily conserved transcriptional activators that coordinate the expression of numerous genes controlling each step of the metastatic process. In this review, we summarize current advances in the understanding of HIF-driven molecular mechanisms that promote BCC metastatic dissemination and patient mortality. In addition, we discuss the clinical and therapeutic implications of HIF targeting in breast cancers.
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110
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Zhao Y, Xie Z, Lin J, Liu P. MiR-144-3p inhibits cell proliferation and induces apoptosis in multiple myeloma by targeting c-Met. Am J Transl Res 2017; 9:2437-2446. [PMID: 28559994 PMCID: PMC5446526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
MicroRNA-144-3p (miR-144-3p) has been implicated in the development of many types of cancer. However, its role in multiple myeloma (MM) remains largely unknown. In this study, we found that miR-144-3p was downregulated in both MM cell lines and plasma from patients with MM. In vitro studies further showed that transfection of an miR-144-3p mimic into MM cells inhibited their proliferation and colony formation, and promoted cell cycle arrest at the G0/G1 phase and apoptosis. In addition, we found that miR-144-3p could directly target the 3'-untranslated region of cellular-mesenchymal to epithelial transition factor (c-MET) and suppress c-MET expression and its downstream signaling pathway (PI3K/AKT). Rescue experiments revealed that overexpression of c-MET partially reversed the inhibition effect of miR-144-3p in MM cells. In vivo studies confirmed that restoration of miR-144-3p suppressed tumor growth in xenograft nude mice by repressing c-MET. Overall, these findings demonstrate that miR-144-3p functions as a tumor suppressor in MM by targeting c-MET, suggesting that miR-144-3p might serve as a potential therapeutic target in MM.
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Affiliation(s)
- Yue Zhao
- Department of Vascular Surgery, The China Japan Union Hospital of Jilin UniversityChangchun 130033, China
| | - Zhongshi Xie
- Department of Gastrointestinal Colorectal and Anal Surgery, The China Japan Union Hospital of Jilin UniversityChangchun 130033, China
| | - Jie Lin
- Department of Vascular Surgery, The China Japan Union Hospital of Jilin UniversityChangchun 130033, China
| | - Peng Liu
- Department of Orthopaedics, The China Japan Union Hospital of Jilin UniversityChangchun 130033, China
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111
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Safaie Qamsari E, Safaei Ghaderi S, Zarei B, Dorostkar R, Bagheri S, Jadidi-Niaragh F, Somi MH, Yousefi M. The c-Met receptor: Implication for targeted therapies in colorectal cancer. Tumour Biol 2017; 39:1010428317699118. [DOI: 10.1177/1010428317699118] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
c-Met (mesenchymal–epithelial transition factor) is a tyrosine kinase receptor activated by hepatocyte growth factor and regulates multiple biological processes, such as cell scattering, survival, and proliferation. Aberrant c-Met signaling has been implicated in a variety of cancer types, including colorectal cancer. c-Met is genetically altered through various mechanisms that is associated with colorectal cancer progression and metastasis. Especially, in colorectal cancer, preclinical evidence for the aberrant activation of the c-Met signaling exists. Accordingly, molecular targeting of c-Met receptor could be a promising strategy, in the treatment of colorectal cancer patients. Recently, it was also shown that crosstalk between c-Met and other cell surface receptors attributes to tumorigenesis and development of therapeutic resistance. Characterization of the molecular mechanisms through which c-Met crosstalks with other receptors in favor of tumor formation and progression remains to explore. This review will describe the mechanisms of aberrant c-Met signaling in colorectal cancer and discuss on additional roles for c-Met receptor through crosstalk with other tyrosine kinase receptors and cell surface proteins in colorectal cancer. Novel therapeutic approaches for c-Met pathway targeting will also be discussed.
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Affiliation(s)
- Elmira Safaie Qamsari
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sepideh Safaei Ghaderi
- Department of Biotechnology, Faculty of Advanced Science & Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
- Hybridoma Laboratory, Immunology Department, Pasteur Institute of Iran, Tehran, Iran
| | - Bahareh Zarei
- Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Ruhollah Dorostkar
- Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Salman Bagheri
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhad Jadidi-Niaragh
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Han P, Li H, Jiang X, Zhai B, Tan G, Zhao D, Qiao H, Liu B, Jiang H, Sun X. Dual inhibition of Akt and c-Met as a second-line therapy following acquired resistance to sorafenib in hepatocellular carcinoma cells. Mol Oncol 2017; 11:320-334. [PMID: 28164434 PMCID: PMC5527443 DOI: 10.1002/1878-0261.12039] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 01/09/2017] [Accepted: 01/18/2017] [Indexed: 12/15/2022] Open
Abstract
Sorafenib displays a limited efficacy for advanced hepatocellular carcinoma (HCC). Some patients with HCC initially respond to sorafenib, but eventually succumb to the disease, indicating that the acquired resistance to sorafenib reduces its beneficial effects. No alternative drugs are available after the failure of sorafenib therapy. Therefore, investigation of the mechanisms underlying the acquired resistance and development of second-line treatments for sorafenib-resistant HCC are urgently required. In this study, sorafenib-resistant HCC cells generated from sorafenib-sensitive human HCC cells were shown to overproduce hepatocyte growth factor (HGF) and overexpress c-Met kinase and its phosphorylated form, leading to the activation of Akt and ERK (extracellular signaling-regulated kinase) pathways. Use of specific c-Met inhibitors enhanced the effects of sorafenib by inhibiting the growth of sorafenib-resistant HCC cells. Akt inhibitors, a class of second-line therapeutic drugs under investigation for treating HCC in clinical trials, enhanced the effects of sorafenib, but also activated the c-Met pathway in sorafenib-resistant cells. Dual inhibition of Akt and c-Met by their respective inhibitors, MK2206 and capmatinib, additively or synergistically suppressed sorafenib-resistant HCC cells in vitro and sorafenib-resistant HCC xenografts in mice. The anticancer activities of MK2206 mainly rely on its ability to induce cell apoptosis and autophagic death, while capmatinib treatment leads to cell cycle arrest at phase G1. These results provide strong evidence for further investigation on the clinical utility of dual inhibition of Akt and c-Met, particularly MK2206 and capmatinib, as a second-line therapy for advanced HCC that has acquired resistance to sorafenib.
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Affiliation(s)
- Peng Han
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Hali Li
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Xian Jiang
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Bo Zhai
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China.,Department of General Surgery, the Fourth Affiliated Hospital of Harbin Medical University, China
| | - Gang Tan
- Department of General Surgery, the Fourth Affiliated Hospital of Harbin Medical University, China
| | - Dali Zhao
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Haiquan Qiao
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Bing Liu
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Hongchi Jiang
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
| | - Xueying Sun
- The Hepatosplenic Surgery Center, Department of General Surgery, the First Affiliated Hospital of Harbin Medical University, China
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113
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Costa R, Shah AN, Santa-Maria CA, Cruz MR, Mahalingam D, Carneiro BA, Chae YK, Cristofanilli M, Gradishar WJ, Giles FJ. Targeting Epidermal Growth Factor Receptor in triple negative breast cancer: New discoveries and practical insights for drug development. Cancer Treat Rev 2017; 53:111-119. [DOI: 10.1016/j.ctrv.2016.12.010] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 12/23/2016] [Accepted: 12/24/2016] [Indexed: 12/25/2022]
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114
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Macher-Goeppinger S, Keith M, Endris V, Penzel R, Tagscherer KE, Pahernik S, Hohenfellner M, Gardner H, Grüllich C, Schirmacher P, Roth W. MET expression and copy number status in clear-cell renal cell carcinoma: prognostic value and potential predictive marker. Oncotarget 2017; 8:1046-1057. [PMID: 27894094 PMCID: PMC5352033 DOI: 10.18632/oncotarget.13540] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 11/07/2016] [Indexed: 12/12/2022] Open
Abstract
Multiple targeted therapy for advanced clear-cell renal cell carcinoma (RCC) has substantially improved patient outcome, but complete remission is uncommon and many tumors eventually develop resistance. Mechanistic, preclinical, and early clinical data highlight c-Met / hepatocyte growth factor receptor as a promising target for RCC therapeutic agents.We have examined MET expression, frequency of MET gene copy gains and MET gene mutation in a large, hospital-based series of renal cell carcinomas with long-term follow-up information.Out of a total of 572 clear-cell RCC, only 17% were negative for MET expression whereas 32% showed high protein levels. High MET expression and MET copy number gains were associated with an aggressive phenotype and an unfavorable patient outcome. Elevated protein levels in absence of gene amplification were not attributed to mutations, based on results of targeted next-generation sequencing.Our data reveal that clear-cell RCC with MET upregulation show an aggressive behavior and MET copy number increase is evident in a substantial percentage of patients with high-grade carcinomas and metastatic disease. Diagnostic assessment of MET expression and amplification may be of predictive value to guide targeted therapy against MET signaling in patients with clear-cell RCC.
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Affiliation(s)
- Stephan Macher-Goeppinger
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
- Molecular Tumor Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
| | - Martina Keith
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
- Molecular Tumor Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Volker Endris
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Roland Penzel
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Katrin E. Tagscherer
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
- Molecular Tumor Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sascha Pahernik
- Department of Urology, University Hospital Heidelberg, Heidelberg, Germany
| | | | - Humphrey Gardner
- Translational Medicine, Early Clinical Development, AstraZeneca, Gatehouse Park, Waltham, MA, USA
| | - Carsten Grüllich
- Department of Medical Oncology, National Center for Tumor Diseases Heidelberg, University Hospital Heidelberg, Heidelberg, Germany
| | - Peter Schirmacher
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Wilfried Roth
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
- Molecular Tumor Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
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115
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Pilotto S, Gkountakos A, Carbognin L, Scarpa A, Tortora G, Bria E. MET exon 14 juxtamembrane splicing mutations: clinical and therapeutical perspectives for cancer therapy. ANNALS OF TRANSLATIONAL MEDICINE 2017; 5:2. [PMID: 28164087 PMCID: PMC5253296 DOI: 10.21037/atm.2016.12.33] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 10/11/2016] [Indexed: 01/20/2023]
Abstract
The MET proto-oncogene plays crucial roles in cell growth and proliferation, survival and apoptosis, epithelial-mesenchymal transition (EMT) and invasion, potentially conditioning the development and progression of the carcinogenesis process. The MET-associated aberrant signaling could be triggered by a variety of mechanisms, such as mutations, gene amplification, increased gene copy number and Met/HGF protein expression. Among the various MET alterations, MET exon 14 splicing abnormalities, causing the loss of the Met juxtamembrane (JM) domain, recently emerged as a new potential oncogenic driver and have been identified and validated across different cancer and histology subtypes. Moreover, this aberration was found to be mutually exclusive with other recognized drivers, thus strongly nominating its potential oncogenic role. Recently, the clinical activity of anti-Met-targeted therapy was demonstrated particularly in patients harboring MET exon 14 skipping lung cancer, resulting in a renewed enthusiasm to further test MET precision therapy in prospective trials. In this review, the key preclinical and clinical data regarding MET exon 14 skipping splicing variants as an actionable genomic aberration in cancer are described, and the perspectives deriving from the validation of such alteration as a potential target, which may further allow driving the therapeutic approach in this molecularly selected patients' subgroup, are explored.
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Affiliation(s)
- Sara Pilotto
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | | | - Luisa Carbognin
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Aldo Scarpa
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
- ARC-NET Applied Research on Cancer Center, University of Verona, Verona, Italy
| | - Giampaolo Tortora
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Emilio Bria
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
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116
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Ahmad G, Amiji MM. Cancer stem cell-targeted therapeutics and delivery strategies. Expert Opin Drug Deliv 2016; 14:997-1008. [DOI: 10.1080/17425247.2017.1263615] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Gulzar Ahmad
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA, USA
| | - Mansoor M. Amiji
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA, USA
- Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
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117
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Blood vessel endothelium-directed tumor cell streaming in breast tumors requires the HGF/C-Met signaling pathway. Oncogene 2016; 36:2680-2692. [PMID: 27893712 PMCID: PMC5426963 DOI: 10.1038/onc.2016.421] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 09/13/2016] [Accepted: 09/30/2016] [Indexed: 01/14/2023]
Abstract
During metastasis to distant sites, tumor cells migrate to blood vessels. In vivo, breast tumor cells utilize a specialized mode of migration known as streaming, where a linear assembly of tumor cells migrate directionally towards blood vessels on fibronectin-collagen I-containing extracellular matrix (ECM) fibers in response to chemotactic signals. We have successfully reconstructed tumor cell streaming in vitro by co-plating tumors cells, macrophages and endothelial cells on 2.5 μm thick ECM-coated micro-patterned substrates. We found that tumor cells and macrophages, when plated together on the micro-patterned substrates, do not demonstrate sustained directional migration in only one direction (sustained directionality) but show random bi-directional walking. Sustained directionality of tumor cells as seen in vivo was established in vitro when beads coated with human umbilical vein endothelial cells were placed at one end of the micro-patterned 'ECM fibers' within the assay. We demonstrated that these endothelial cells supply the hepatocyte growth factor (HGF) required for the chemotactic gradient responsible for sustained directionality. Using this in vitro reconstituted streaming system, we found that directional streaming is dependent on, and most effectively blocked, by inhibiting the HGF/C-Met signaling pathway between endothelial cells and tumor cells. Key observations made with the in vitro reconstituted system implicating C-Met signaling were confirmed in vivo in mammary tumors using the in vivo invasion assay and intravital multiphoton imaging of tumor cell streaming. These results establish HGF/C-Met as a central organizing signal in blood vessel-directed tumor cell migration in vivo and highlight a promising role for C-Met inhibitors in blocking tumor cell streaming and metastasis in vivo, and for use in human trials.
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118
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p53 deficiency induces cancer stem cell pool expansion in a mouse model of triple-negative breast tumors. Oncogene 2016; 36:2355-2365. [PMID: 27775073 DOI: 10.1038/onc.2016.396] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 09/14/2016] [Accepted: 09/16/2016] [Indexed: 12/16/2022]
Abstract
Triple-negative breast cancer is a heterogeneous disease characterized by the expression of basal cell markers, no estrogen or progesterone receptor expression and a lack of HER2 overexpression. Triple-negative tumors often display activated Wnt/β-catenin signaling and most have impaired p53 function. We studied the interplay between p53 loss and Wnt/β-catenin signaling in stem cell function and tumorigenesis, by deleting p53 from the mammary epithelium of K5ΔNβcat mice displaying a constitutive activation of Wnt/β-catenin signaling in basal cells. K5ΔNβcat transgenic mice present amplification of the basal stem cell pool and develop triple-negative mammary carcinomas. The loss of p53 in K5ΔNβcat mice led to an early expansion of mammary stem/progenitor cells and accelerated the formation of triple-negative tumors. In particular, p53-deficient tumors expressed high levels of integrins and extracellular matrix components and were enriched in cancer stem cells. They also overexpressed the tyrosine kinase receptor Met, a feature characteristic of human triple-negative breast tumors. The inhibition of Met kinase activity impaired tumorsphere formation, demonstrating the requirement of Met signaling for cancer stem cell growth in this model. Human basal-like breast cancers with predicted mutated p53 status had higher levels of MET expression than tumors with wild-type p53. These results connect p53 loss and β-catenin activation to stem cell regulation and tumorigenesis in triple-negative cancer and highlight the role of Met signaling in maintaining cancer stem cell properties, revealing new cues for targeted therapies.
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119
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Cao J, Zhang Y, Yang J, He S, Li M, Yan S, Chen Y, Qu C, Xu L. NEAT1 regulates pancreatic cancer cell growth, invasion and migration though mircroRNA-335-5p/c-met axis. Am J Cancer Res 2016; 6:2361-2374. [PMID: 27822425 PMCID: PMC5088299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 05/12/2016] [Indexed: 06/06/2023] Open
Abstract
NEAT1 has been reported to affect cancer progression, which was subsequently confirmed in multiple cancers. Hsa-miRNA-335-5p (miR-335-5p) has recently been identified as an anticancer agent in various organs. However, the relationship between NEAT1 and miR-335-5p remains poorly understood. In this study, we investigated the effects of NEAT1 and miR-335-5p on development of pancreatic cancer. The ectopic expression of miR-335-5p in pancreatic cancer cell lines significantly suppressed cell growth by inhibiting c-met. In addition, downregulating NEAT1 upregulates miR-335-5p. Taken together, our results demonstrate that the NEAT1/miR-335-5p/c-met axis plays a pivotal role in pancreatic cancer by regulating the proliferation, metastasis, and apoptosis of pancreatic cancer cells in vivo and in vitro.
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Affiliation(s)
- Jia Cao
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Yi Zhang
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Jiachun Yang
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Sijia He
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Mingming Li
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Shiyan Yan
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Ying Chen
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Chunying Qu
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
| | - Leiming Xu
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine Shanghai 200092, China
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Calhoun BC, Portier B, Wang Z, Minca EC, Budd GT, Lanigan C, Tubbs RR, Morrison LE. MET and PTEN gene copy numbers and Ki-67 protein expression associate with pathologic complete response in ERBB2-positive breast carcinoma patients treated with neoadjuvant trastuzumab-based therapy. BMC Cancer 2016; 16:695. [PMID: 27576528 PMCID: PMC5006506 DOI: 10.1186/s12885-016-2743-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 08/22/2016] [Indexed: 01/04/2023] Open
Abstract
Background Pathologic complete response (pCR) after neoadjuvant chemotherapy for breast cancer is associated with improved prognosis in aggressive tumor subtypes, including ERBB2- positive tumors. Recent adoption of pCR as a surrogate endpoint for clinical trials in early stage breast cancer in the neoadjuvant setting highlights the need for biomarkers that, alone or in combination, help predict the likelihood of response to treatment. Methods Biopsy specimens from 29 patients with invasive ductal carcinoma treated with trastuzumab-based therapy prior to definitive resection and pathologic staging were evaluated by dual color bright field in situ hybridization (dual ISH) using probes for MET, TOP2A, PTEN, and PIK3CA genes, each paired with centromeric probes to their respective chromosomes (chromosomes 7, 17, 10, and 3). Ki-67 expression was assessed by immunohistochemistry (IHC). Various parameters describing copy number alterations were evaluated for each gene and centromere probe to identify the optimal parameters for clinical relevance. Combinations of ISH parameters and IHC expression for Ki-67 were also evaluated. Results Of the four genes and their respective chromosomes evaluated by ISH, two gene copy number parameters provided statistically significant associations with pCR: MET gain or loss relative to chromosome 7 (AUC = 0.791, sensitivity = 92 % and specificity = 67 % at optimal cutoff, p = 0.0032) and gain of PTEN (AUC = 0.674, sensitivity = 38 % and specificity = 100 % at optimal cutoff, p = 0.039). Ki-67 expression was also found to associate significantly with pCR (AUC = 0.726, sensitivity = 100 % and specificity = 42 % at optimal cutoff, p = 0.0098). Combining gain or loss of MET relative to chromosome 7 with Ki-67 expression further improved the association with pCR (AUC = 0.847, sensitivity = 92 % and specificity = 83 % at optimal cutoffs, p = 0.0006). Conclusions An immunogenotypic signature of low complexity comprising MET relative copy number and Ki-67 expression generated by dual ISH and IHC may help predict pCR in ERBB2-positive breast cancer treated with neoadjuvant chemotherapy and trastuzumab. These findings require validation in additional patient cohorts. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2743-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Benjamin C Calhoun
- Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Bryce Portier
- Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.,Present Address: Ventana Medical Systems, Inc, 1910 E. Innovation Park Dr, Tucson, AZ, 85755, USA
| | - Zhen Wang
- Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Eugen C Minca
- Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - G Thomas Budd
- Department of Hematology and Oncology, Cleveland Clinic, Cleveland, OH, USA
| | - Christopher Lanigan
- Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Raymond R Tubbs
- Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Larry E Morrison
- Present Address: Ventana Medical Systems, Inc, 1910 E. Innovation Park Dr, Tucson, AZ, 85755, USA.
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Mohyeldin MM, Busnena BA, Akl MR, Dragoi AM, Cardelli JA, El Sayed KA. Novel c-Met inhibitory olive secoiridoid semisynthetic analogs for the control of invasive breast cancer. Eur J Med Chem 2016; 118:299-315. [PMID: 27258622 PMCID: PMC5073051 DOI: 10.1016/j.ejmech.2016.04.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 04/16/2016] [Accepted: 04/16/2016] [Indexed: 01/07/2023]
Abstract
Dysregulated receptor tyrosine kinase c-Met and its ligand HGF is valid and attractive molecular target for therapeutic blockade in cancer. Inspired by the chemical structure of the naturally occurring olive secoiridoid (-)-oleocanthal (1) and its documented anticancer activity against c-Met-dependent malignancies, a previous study reported tyrosol sinapate (4) as a c-Met inhibitor hit. This study reports additional semisynthetic optimization and SAR of 4 to improve its selective activity against c-Met-dependent breast cancer by increasing its capacity to inhibit c-Met phosphorylation. Forty-three compounds (5-47) were synthesized, among which the novel analog homovanillyl sinapate (HVS-16) was distinguished for its remarkable activity. HVS-16 substantially impaired c-Met-mediated proliferation, migration, and invasion across human breast cancer cell lines in two- and three-dimensional culture systems, while similar treatment doses were found to have effect neither on the non-tumorigenic human mammary epithelial cell growth nor on the c-Met independent breast cancer cell viability. HVS-16 showed a dose-dependent inhibition of ligand-mediated c-Met activation in human breast cancer cells. Docking studies revealed that HVS-16 fits very well inside c-Met crystal structures, satisfying critical interactions at the ATP binding site. This study identified important structural pharmacophoric features in HVS-16 and correlated its postulated binding pose with c-Met kinase assay data that would guide future olive secoiridoid bioisostere lead design. Results presented herein suggest HVS-16 as a promising c-Met inhibitor validated hit with potential to control invasive breast malignancies with aberrant c-Met activity.
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Affiliation(s)
- Mohamed M Mohyeldin
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, LA, 71201, USA
| | - Belnaser A Busnena
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, LA, 71201, USA
| | - Mohamed R Akl
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, LA, 71201, USA
| | - Ana Maria Dragoi
- Department of Microbiology and Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - James A Cardelli
- Department of Microbiology and Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Khalid A El Sayed
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, LA, 71201, USA.
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Huber MC, Mall R, Braselmann H, Feuchtinger A, Molatore S, Lindner K, Walch A, Gross E, Schmitt M, Falkenberg N, Aubele M. uPAR enhances malignant potential of triple-negative breast cancer by directly interacting with uPA and IGF1R. BMC Cancer 2016; 16:615. [PMID: 27502396 PMCID: PMC4977758 DOI: 10.1186/s12885-016-2663-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 08/03/2016] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Due to lack of a targeted therapy for the triple-negative breast cancer (TNBC) patients, it is important to explore this aggressive breast cancer type in more detail and to establish novel therapeutic approaches. TNBC is defined negative for the protein expression of oestrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2). One prominent feature of this cancer type is the frequent overexpression of major components of the urokinase-type plasminogen activator system (uPAS) including uPA, its receptor uPAR and the inhibitor PAI-1, which may be valuable as therapeutic targets. METHODS Direct interactions of uPAR with interactors were demonstrated by immunoprecipitations and proximity ligation assays. For stable knockdowns of target proteins, lentiviral vectors were used and the effects were analysed by immunoblottings and using in vitro cell viability, migration and invasion assays. Immunohistochemical and statistical analyses of biomarkers and clinical parameters were conducted in a TNBC cohort (n = 174). RESULTS Direct tumour-promoting interactions of uPAR with uPA and the insulin-like growth factor receptor 1 (IGF1R) were shown in TNBC cells and these interactions were significantly reduced (p = 0.001) when uPAR was downregulated. The combined knockdown of uPAR and uPA or IGF1R additively and significantly reduced cell viability, migration and invasion of the model cell lines. In TNBC tissue, the complexes formed by uPAR with uPA or with IGF1R significantly correlated with the histological grade (p = 0.0019) as well as with cathepsin B and D (p ≤ 0.0001) that are implicated in cell invasion and metastasis. CONCLUSIONS Our outcomes show that not only overexpressed biomarkers promote tumourigenesis, but rather their interactions further potentiate tumour progression. This study emphasises the potential of combined approaches targeting uPAR and its interactors with regard to an improved therapy of TNBC.
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Affiliation(s)
- Michaela C Huber
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Rebecca Mall
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Herbert Braselmann
- Research Unit of Radiation Cytogenetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit of Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Sara Molatore
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Katrin Lindner
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Axel Walch
- Research Unit of Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Eva Gross
- Tumor Genetics Unit, Department of Obstetrics and Gynecology, Technische Universität München, Ismaninger Strasse 22, 81675, München, Germany
| | - Manfred Schmitt
- Clinical Research Unit, Department of Obstetrics and Gynecology, Technische Universität München, Ismaninger Strasse 22, 81675, München, Germany
| | - Natalie Falkenberg
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Michaela Aubele
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany.
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123
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Pfefferle AD, Agrawal YN, Koboldt DC, Kanchi KL, Herschkowitz JI, Mardis ER, Rosen JM, Perou CM. Genomic profiling of murine mammary tumors identifies potential personalized drug targets for p53-deficient mammary cancers. Dis Model Mech 2016; 9:749-57. [PMID: 27149990 PMCID: PMC4958311 DOI: 10.1242/dmm.025239] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 04/27/2016] [Indexed: 12/15/2022] Open
Abstract
Targeted therapies against basal-like breast tumors, which are typically 'triple-negative breast cancers (TNBCs)', remain an important unmet clinical need. Somatic TP53 mutations are the most common genetic event in basal-like breast tumors and TNBC. To identify additional drivers and possible drug targets of this subtype, a comparative study between human and murine tumors was performed by utilizing a murine Trp53-null mammary transplant tumor model. We show that two subsets of murine Trp53-null mammary transplant tumors resemble aspects of the human basal-like subtype. DNA-microarray, whole-genome and exome-based sequencing approaches were used to interrogate the secondary genetic aberrations of these tumors, which were then compared to human basal-like tumors to identify conserved somatic genetic features. DNA copy-number variation produced the largest number of conserved candidate personalized drug targets. These candidates were filtered using a DNA-RNA Pearson correlation cut-off and a requirement that the gene was deemed essential in at least 5% of human breast cancer cell lines from an RNA-mediated interference screen database. Five potential personalized drug target genes, which were spontaneously amplified loci in both murine and human basal-like tumors, were identified: Cul4a, Lamp1, Met, Pnpla6 and Tubgcp3 As a proof of concept, inhibition of Met using crizotinib caused Met-amplified murine tumors to initially undergo complete regression. This study identifies Met as a promising drug target in a subset of murine Trp53-null tumors, thus identifying a potential shared driver with a subset of human basal-like breast cancers. Our results also highlight the importance of comparative genomic studies for discovering personalized drug targets and for providing a preclinical model for further investigations of key tumor signaling pathways.
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Affiliation(s)
- Adam D Pfefferle
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Yash N Agrawal
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Daniel C Koboldt
- The McDonnell Genome Institute, Washington University School of Medicine, St Louis, MO 63108, USA
| | - Krishna L Kanchi
- The McDonnell Genome Institute, Washington University School of Medicine, St Louis, MO 63108, USA
| | - Jason I Herschkowitz
- Department of Biomedical Sciences, University at Albany, Rensselaer, NY 12144, USA
| | - Elaine R Mardis
- The McDonnell Genome Institute, Washington University School of Medicine, St Louis, MO 63108, USA
| | - Jeffrey M Rosen
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Charles M Perou
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
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124
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Abstract
Metastasis is the underlying cause of death for the majority of breast cancer patients. Despite significant advances in recent years in basic research and clinical development, therapies that specifically target metastatic breast cancer remain inadequate, and represents the single greatest obstacle to reducing mortality of late-stage breast cancer. Recent efforts have leveraged genomic analysis of breast cancer and molecular dissection of tumor-stromal cross-talk to uncover a number of promising candidates for targeted treatment of metastatic breast cancer. Rational combinations of therapeutic agents targeting tumor-intrinsic properties and microenvironmental components provide a promising strategy to develop precision treatments with higher specificity and less toxicity. In this review, we discuss the emerging therapeutic targets in breast cancer metastasis, from tumor-intrinsic pathways to those that involve the host tissue components, including the immune system.
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Affiliation(s)
- Zhuo Li
- Department of Molecular Biology, Princeton University, Princeton, NJ, 08544, United States
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, NJ, 08544, United States.
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125
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Du Y, Yamaguchi H, Wei Y, Hsu JL, Wang HL, Hsu YH, Lin WC, Yu WH, Leonard PG, Lee GR, Chen MK, Nakai K, Hsu MC, Chen CT, Sun Y, Wu Y, Chang WC, Huang WC, Liu CL, Chang YC, Chen CH, Park M, Jones P, Hortobagyi GN, Hung MC. Blocking c-Met-mediated PARP1 phosphorylation enhances anti-tumor effects of PARP inhibitors. Nat Med 2016; 22:194-201. [PMID: 26779812 PMCID: PMC4754671 DOI: 10.1038/nm.4032] [Citation(s) in RCA: 163] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 12/15/2015] [Indexed: 12/12/2022]
Abstract
Poly (ADP-ribose) polymerase (PARP) inhibitors have emerged as promising therapeutics for many diseases, including cancer, in clinical trials1. One PARP inhibitor, olaparib (Lynparza™, AstraZeneca), was recently approved by the FDA to treat ovarian cancer with BRCA mutations. BRCA1 and BRCA2 play essential roles in repairing DNA double strand breaks, and a deficiency of BRCA proteins sensitizes cancer cells to PARP inhibition2,3. Here we show that receptor tyrosine kinase c-Met associates with and phosphorylates PARP1 at Tyr907. Phosphorylation of PARP1 Tyr907 increases PARP1 enzymatic activity and reduces binding to a PARP inhibitor, thereby rendering cancer cells resistant to PARP inhibition. Combining c-Met and PARP1 inhibitors synergized to suppress growth of breast cancer cells in vitro and xenograft tumor models. Similar synergistic effects were observed in a lung cancer xenograft tumor model. These results suggest that PARP1 pTyr907 abundance may predict tumor resistance to PARP inhibitors, and that treatment with a combination of c-Met and PARP inhibitors may benefit patients bearing tumors with high c-Met expression who do not respond to PARP inhibition alone.
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Affiliation(s)
- Yi Du
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hirohito Yamaguchi
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yongkun Wei
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jennifer L Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hung-Ling Wang
- Graduate Institute of Cancer Biology and Center for Molecular Medicine, China Medical University, Taichung, Taiwan
| | - Yi-Hsin Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Wan-Chi Lin
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Wen-Hsuan Yu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, USA
| | - Paul G Leonard
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Gilbert R Lee
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Mei-Kuang Chen
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, USA
| | - Katsuya Nakai
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ming-Chuan Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Chun-Te Chen
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ye Sun
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yun Wu
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Wei-Chao Chang
- Graduate Institute of Cancer Biology and Center for Molecular Medicine, China Medical University, Taichung, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Wen-Chien Huang
- Department of Surgery, Mackay Memorial Hospital, Taipei, Taiwan
| | - Chien-Liang Liu
- Department of Surgery, Mackay Memorial Hospital, Taipei, Taiwan
| | | | | | - Morag Park
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Philip Jones
- Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Gabriel N Hortobagyi
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Graduate Institute of Cancer Biology and Center for Molecular Medicine, China Medical University, Taichung, Taiwan.,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, USA.,Department of Biotechnology, Asia University, Taichung, Taiwan
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126
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Yan M, Wang H, Wang Q, Zhang Z, Zhang C. Allosteric inhibition of c-Met kinase in sub-microsecond molecular dynamics simulations induced by its inhibitor, tivantinib. Phys Chem Chem Phys 2016; 18:10367-74. [DOI: 10.1039/c5cp07001e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Molecular dynamics simulations showed that conformation transition of c-Met from DFG-in to DFG-out may accomplish rapidly in the presence of tivantinib. A unique binding mode of tivantinib was found to be critical for this “DFG-flip”.
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Affiliation(s)
- Maocai Yan
- School of Pharmacy
- Jining Medical University
- Rizhao
- P. R. China
| | - Huiyun Wang
- School of Pharmacy
- Jining Medical University
- Rizhao
- P. R. China
| | - Qibao Wang
- School of Pharmacy
- Jining Medical University
- Rizhao
- P. R. China
| | - Zhen Zhang
- School of Pharmacy
- Jining Medical University
- Rizhao
- P. R. China
| | - Chunyan Zhang
- School of Pharmacy
- Jining Medical University
- Rizhao
- P. R. China
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127
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Novel delivery approaches for cancer therapeutics. J Control Release 2015; 219:248-268. [PMID: 26456750 DOI: 10.1016/j.jconrel.2015.09.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/09/2015] [Accepted: 09/30/2015] [Indexed: 02/07/2023]
Abstract
Currently, a majority of cancer treatment strategies are based on the removal of tumor mass mainly by surgery. Chemical and physical treatments such as chemo- and radiotherapies have also made a major contribution in inhibiting rapid growth of malignant cells. Furthermore, these approaches are often combined to enhance therapeutic indices. It is widely known that surgery, chemo- and radiotherapy also inhibit normal cells growth. In addition, these treatment modalities are associated with severe side effects and high toxicity which in turn lead to low quality of life. This review encompasses novel strategies for more effective chemotherapeutic delivery aiming to generate better prognosis. Currently, cancer treatment is a highly dynamic field and significant advances are being made in the development of novel cancer treatment strategies. In contrast to conventional cancer therapeutics, novel approaches such as ligand or receptor based targeting, triggered release, intracellular drug targeting, gene delivery, cancer stem cell therapy, magnetic drug targeting and ultrasound-mediated drug delivery, have added new modalities for cancer treatment. These approaches have led to selective detection of malignant cells leading to their eradication with minimal side effects. Lowering multi-drug resistance and involving influx transportation in targeted drug delivery to cancer cells can also contribute significantly in the therapeutic interventions in cancer.
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128
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Dittmer J. The role of the transcription factor Ets1 in carcinoma. Semin Cancer Biol 2015; 35:20-38. [PMID: 26392377 DOI: 10.1016/j.semcancer.2015.09.010] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/16/2015] [Accepted: 09/16/2015] [Indexed: 12/12/2022]
Abstract
Ets1 belongs to the large family of the ETS domain family of transcription factors and is involved in cancer progression. In most carcinomas, Ets1 expression is linked to poor survival. In breast cancer, Ets1 is primarily expressed in the triple-negative subtype, which is associated with unfavorable prognosis. Ets1 contributes to the acquisition of cancer cell invasiveness, to EMT (epithelial-to-mesenchymal transition), to the development of drug resistance and neo-angiogenesis. The aim of this review is to summarize the current knowledge on the functions of Ets1 in carcinoma progression and on the mechanisms that regulate Ets1 activity in cancer.
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Affiliation(s)
- Jürgen Dittmer
- Clinic for Gynecology, Martin Luther University Halle-Wittenberg, Germany.
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