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Byeon S, Jung J, Kim ST, Kim KM, Lee J. Clinical Implication of Concurrent Amplification of MET and FGFR2 in Metastatic Gastric Cancer. Biomedicines 2023; 11:3172. [PMID: 38137393 PMCID: PMC10740780 DOI: 10.3390/biomedicines11123172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND c-mesenchymal epithelial transition factor receptor (c-MET) and fibroblast growth factor receptor 2 (FGFR2) amplification have been identified as factors associated with advanced stage and poor prognosis in gastric cancer (GC). While they are typically considered mutually exclusive, concurrent amplifications have been reported in a small subset of GC patients. METHODS in this retrospective study, we analyzed the clinical outcomes of GC patients with MET and FGFR2 amplification using the next-generation sequencing (NGS) database cohort at Samsung Medical Center, which included a total of 2119 patients between October 2019 and April 2021. RESULTS Of 2119 cancer patients surveyed, the number of GC patients was 614 (29.0%). Out of 614 GC patients, 39 (6.4%) had FGFR2 amplification alone, 22 (3.6%) had MET amplification, and 2 GC patients (0.3%) had concurrent FGFR2 and MET amplification. Two patients with concurrent FGFR2 and MET amplification did not respond to first-line chemotherapy. These two patients had significantly shorter overall survival (3.6 months) compared to patients with FGFR2 or MET amplification alone (13.6 months and 8.4 months, respectively) (p = 0.004). Lastly, we tested the existence of FGFR2 and MET in tumor specimens from different organ sites. Initially, the NGS was tested in a primary tumor specimen from stomach cancer, where the MET copy number was 14.1 and the FGFR2 copy number was 5.3. We confirmed that both MET and FGFR2 were highly amplified in the primary tumor using FISH (MET-CEP7 ratio = 5 and FGFR2-CEP7 ratio = 3). However, although the MET copy number was normal in peritoneal seeding using FISH, FGFR2 remained amplified using FISH (FGFR2-CEP7 ratio = 7) with high FGFR2 protein overexpression. Hence, there was intra-patient molecular heterogeneity. CONCLUSIONS our findings suggest that concurrent amplification of FGFR2 and MET in GC patients is associated with clinical aggressiveness and may contribute to non-responsiveness to chemotherapy or targeted therapy.
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Affiliation(s)
- Seonggyu Byeon
- Division of Hematology-Oncology, Department of Internal Medicine, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea;
| | - Jaeyun Jung
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Seung Tae Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Kyoung-Mee Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea;
| | - Jeeyun Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
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Goenka A, Song X, Tiek D, Iglesia RP, Lu M, Zeng C, Horbinski C, Zhang W, Hu B, Cheng SY. Oncogenic long noncoding RNA LINC02283 enhances PDGF receptor A-mediated signaling and drives glioblastoma tumorigenesis. Neuro Oncol 2023; 25:1592-1604. [PMID: 36988488 PMCID: PMC10479875 DOI: 10.1093/neuonc/noad065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) regulate the etiology of complex diseases and cancers, including glioblastoma (GBM). However, lncRNA-based therapies are limited because the mechanisms of action of many lncRNAs with their binding partners are not completely understood. METHODS We used transcriptomic and genomic data to analyze correlations between LINC02283 and PDGFRA (platelet-derived growth factor receptor A). The biological functions of the novel lncRNA were assessed in vivo using patient-derived glioma stem-like cells (GSCs), and orthotopic GBM xenografts. Immunoblotting, qRT-PCR, RNA pull down, crosslinked RNA immunoprecipitation, fluorescence in situ hybridization, and antisense oligo-mediated knockdown were performed to explore the regulation of LINC02283 on PDGFRA signaling. Expression of LINC02283 in clinical samples was assessed using pathologically diagnosed GBM patient samples. RESULTS We identified a novel oncogenic lncRNA, LINC02283, that is highly expressed in the PDGFRA mutation-driven cohort of glioma patients and associated with worse prognosis. LINC02283 gene co-amplifies with the PDGFRA locus and shows high correlation with PDGFRA expression. Deprivation of LINC02283 in GSCs with PDGFRA amplification mutation, attenuated tumorigenicity and enhanced survival in orthotopic GBM xenograft models, while overexpression of LINC02283 in GSCs with wild-type PDGFRA, enhances PDGFRA signaling, and decreases survival. Further, LINC02283 interacts with PDGFRA to enhance its signaling and that of its downstream targets AKT and ERK, thus promoting oncogenesis in GBM. CONCLUSIONS Our results provide strong evidence of LINC02283 as a regulator of PDGFRA oncogenic activity and GBM malignancy and support the potential of lncRNAs as possible therapeutic targets.
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Affiliation(s)
- Anshika Goenka
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
| | - Xiao Song
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
| | - Deanna Tiek
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
| | - Rebeca Piatniczka Iglesia
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
| | - Minghui Lu
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
- Master of Biotechnology Program, Northwestern University, Evanston, Illinois, USA
| | - Chang Zeng
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Department of Preventive Medicine, Chicago, Illinois, USA
| | - Craig Horbinski
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
- Department of Pathology, Chicago, Illinois, USA
- Department of Neurological Surgery, Chicago, Illinois, USA
| | - Wei Zhang
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Department of Preventive Medicine, Chicago, Illinois, USA
| | - Bo Hu
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
| | - Shi-Yuan Cheng
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Lou and Jean Malnati Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, Illinois, USA
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Wang D, Hao S, He H, Zhang J, You G, Wu X, Zhang R, Meng X, Cui X, Bai J, Fu S, Yu J. Contribution of PGAP3 co-amplified and co-overexpressed with ERBB2 at 17q12 involved poor prognosis in gastric cancer. J Cell Mol Med 2023; 27:2424-2436. [PMID: 37386793 PMCID: PMC10424286 DOI: 10.1111/jcmm.17828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/10/2023] [Accepted: 06/19/2023] [Indexed: 07/01/2023] Open
Abstract
The locus at 17q12 erb-b2 receptor tyrosine kinase 2 (ERBB2) has been heavily amplificated and overexpressed in gastric cancer (GC), but it remains to be elucidated about the clinical significance of the co-amplification and co-overexpression of PGAP3 gene located around ERBB2 in GC. The profile of PGAP3 and ERBB2 in four GC cell lines and tissue microarrays containing 418 primary GC tissues was assessed to investigate the co-overexpression and clinical significance of the co-amplified genes, and to evaluate the impact of the co-amplified genes on the malignancy of GC. Co-amplification of PGAP3 and ERBB2 accompanied with co-overexpression was observed in a haploid chromosome 17 of NCI-N87 cells with double minutes (DMs). PGAP3 and ERBB2 were overexpressed and positively correlated in 418 GC patients. Co-overexpression of the PGAP3 and ERBB2 was correlated with T stage, TNM stage, tumour size, intestinal histological type and poor survival proportion in 141 GC patients. In vitro, knockdown of the endogenous PGAP3 or ERBB2 decreased cell proliferation and invasion, increased G1 phase accumulation and induced apoptosis in NCI-N87 cells. Furthermore, combined silencing of PGAP3 and ERBB2 showed an additive effect on resisting proliferation of NCI-N87 cells compared with targeting ERBB2 or PGAP3 alone. Taken together, the co-overexpression of PGAP3 and ERBB2 may be crucial due to its significant correlation with clinicopathological factors of GC. Haploid gain of PGAP3 co-amplified with ERBB2 is sufficient to facilitate the malignancy and progression of GC cells in a synergistic way.
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Affiliation(s)
- Dong Wang
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Siyu Hao
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Hongjie He
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Jian Zhang
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Ge You
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Xin Wu
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Rui Zhang
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Xiangning Meng
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University)Ministry of EducationHarbinChina
| | - Xiaobo Cui
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University)Ministry of EducationHarbinChina
| | - Jing Bai
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University)Ministry of EducationHarbinChina
| | - Songbin Fu
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University)Ministry of EducationHarbinChina
| | - Jingcui Yu
- Scientific Research CentreThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University)Ministry of EducationHarbinChina
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Laurito S, Branham MT, Campoy E, Real S, Cueto J, Urrutia G, Gago F, Tello O, Glatstein T, De la Iglesia P, Atanesyan L, Savola S, Roqué M. Working together for the family: determination of HER oncogene co-amplifications in breast cancer. Oncotarget 2020; 11:2774-2792. [PMID: 32733648 PMCID: PMC7367656 DOI: 10.18632/oncotarget.27671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/20/2020] [Indexed: 11/25/2022] Open
Abstract
HER2 is a well-studied tyrosine kinase (TK) membrane receptor which functions as a therapeutic target in invasive ductal breast carcinomas (IDC). The standard of care for the treatment of HER2-positive breast is the antibody trastuzumab. Despite specific treatment unfortunately, 20% of primary and 70% of metastatic HER2 tumors develop resistance. HER2 belongs to a gene family, with four members (HER1-4) and these members could be involved in resistance to anti-HER2 therapies. In this study we designed a probemix to detect the amplification of the four HER oncogenes in a single reaction. In addition, we developed a protocol based on the combination of MLPA with ddPCR to detect the tumor proportion of co-amplified HERs. On 111 IDC, the HER2 MLPA results were validated by FISH (Adjusted r 2 = 0,91, p < 0,0001), CISH (Adjusted r 2 = 0,938, p < 0,0001) and IHC (Adjusted r 2 = 0,31, p < 0,0001). HER1-4 MLPA results were validated by RT-qPCR assays (Spearman Rank test p < 0,05). Of the 111 samples, 26% presented at least one HER amplified, of which 23% showed co-amplifications with other HERs. The percentage of cells with HER2 co-amplified varied among the tumors (from 2-72,6%). Independent in-silico findings show that the outcome of HER2+ patients is conditioned by the status of HER3 and HER4. Our results encourage further studies to investigate the relationship with patient's response to single or combined treatment. The approach could serve as proof of principle for other tumors in which the HER oncogenes are involved.
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Affiliation(s)
- Sergio Laurito
- Institute of Histology and Embryology, National Council of Research, Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina.,Universidad Nacional de Cuyo, Facultad de Ciencias Exactas y Naturales, Mendoza, Argentina
| | - María Teresita Branham
- Institute of Histology and Embryology, National Council of Research, Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina
| | - Emanuel Campoy
- Institute of Histology and Embryology, National Council of Research, Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina.,Universidad Nacional de Cuyo, Facultad de Ciencias Médicas, Mendoza, Argentina
| | - Sebastián Real
- Institute of Histology and Embryology, National Council of Research, Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina.,Universidad Nacional de Cuyo, Facultad de Ciencias Médicas, Mendoza, Argentina
| | - Juan Cueto
- Universidad Nacional de Cuyo, Facultad de Ciencias Médicas, Mendoza, Argentina
| | - Guillermo Urrutia
- Division of Research, Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Olga Tello
- Instituto Gineco-Mamario, Mendoza, Argentina
| | | | | | - Lilit Atanesyan
- MRC-Holland BV, Department of Oncogenetics, Amsterdam, The Netherlands
| | - Suvi Savola
- MRC-Holland BV, Department of Oncogenetics, Amsterdam, The Netherlands
| | - Maria Roqué
- Institute of Histology and Embryology, National Council of Research, Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina.,Universidad Nacional de Cuyo, Facultad de Ciencias Exactas y Naturales, Mendoza, Argentina
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Hu X, Li Y, Yuan D, Li R, Kong L, Li H, Yang Z, Yu Q. Retrospective analysis of the association between human epidermal growth factor receptor 2 amplification and chromosome enumeration probe 17 status in patients with breast cancer. Oncol Lett 2017; 14:5265-5270. [PMID: 29113162 PMCID: PMC5656029 DOI: 10.3892/ol.2017.6897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 07/11/2017] [Indexed: 01/28/2023] Open
Abstract
The aim of the present study was to identify potential human epidermal growth factor receptor 2 (HER2) amplification, according to American Society of Clinical Oncology and the College of American Pathologists (ASCO/CAP) 2013 HER2 testing guidelines, in patients previously determined not to possess HER2 amplification, in accordance with previous 2007 guidelines. Potential discrepancies may arise from chromosome enumeration probe 17 (CEP17) amplification, deletion, polysomyor monosomy. HER2, CEP17, tumor protein p53 (TP53) and retinoic acid receptor α (RARA) genes from 67 patient specimens with suspected amplification, polysomy or monosomy of CEP17 were analyzed using fluorescence in situ hybridization. HER2 status was interpreted using 2007 and 2013 ASCO HER2 test guidelines as well as the reference genes TP53 and RARA. According to ASCO/CAP2007 HER2 guidelines, 20 patients exhibited HER2 amplification (29.85%), 41 were without HER2 amplification (including 25 with polysomy, 15 with monosomy and 1 with suspected monosomy plus co-amplification of HER2 and CEP17) and the remaining 6 patients were equivocal. Using ASCO/CAP 2013 HER2 guidelines, 49 patients exhibited HER2 gene amplification (73.1%). The 29-patient increase included 6 originally at equivocal levels but now demonstrating amplification, 22 originally with polysomy but now revealing co-amplification, and 1 with suspected monosomy plus co-amplification of HER2 and CEP17. According to TP53 and RARA, HER2 was amplified in 43 patients (64.1%). Using the revised guidelines, HER2, originally identified as amplified in 6 patients, was not amplified following the introduction of TP53 and RARA control genes. Among these 6, 4 possessed normal TP53 and RARA. The incidence of co-amplification of HER2 and CEP17 was 1.4% (21/1,518). RARA and TP53 are suitable control genes to evaluate HER2 status.
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Affiliation(s)
- Xiaoyu Hu
- Molecular Medical Laboratory, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Yanan Li
- Molecular Medical Laboratory, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Dong Yuan
- Molecular Medical Laboratory, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Ruohan Li
- Molecular Medical Laboratory, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Lingquan Kong
- Endocrine Breast Surgery, The First Affiliated Hospital, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Hongyuan Li
- Endocrine Breast Surgery, The First Affiliated Hospital, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Zhu Yang
- Molecular Medical Laboratory, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Qiubo Yu
- Molecular Medical Laboratory, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
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Indira Chandran V, Eppenberger-Castori S, Venkatesh T, Vine KL, Ranson M. HER2 and uPAR cooperativity contribute to metastatic phenotype of HER2-positive breast cancer. Oncoscience 2015; 2:207-24. [PMID: 25897424 PMCID: PMC4394126 DOI: 10.18632/oncoscience.146] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 03/16/2015] [Indexed: 12/30/2022] Open
Abstract
Human epidermal growth factor receptor type 2 (HER2)-positive breast carcinoma is highly aggressive and mostly metastatic in nature though curable/manageable in part by molecular targeted therapy. Recent evidence suggests a subtype of cells within HER2-positive breast tumors that concomitantly expresses the urokinase plasminogen activator receptor (uPAR) with inherent stem cell/mesenchymal-like properties promoting tumor cell motility and a metastatic phenotype. This HER-positive/uPAR-positive subtype may be partially responsible for the failure of HER2-targeted treatment strategies. Herein we discuss and substantiate the cumulative preclinical and clinical evidence on HER2-uPAR cooperativity in terms of gene co-amplification and/or mRNA/protein co-overexpression. We then propose a regulatory signaling model that we hypothesize to maintain upregulation and cooperativity between HER2 and uPAR in aggressive breast cancer. An improved understanding of the HER2/uPAR interaction in breast cancer will provide critical biomolecular information that may help better predict disease course and response to therapy.
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Affiliation(s)
- Vineesh Indira Chandran
- Department of Clinical Sciences, Section of Oncology and Pathology, Lund University, Lund, Sweden
| | | | - Thejaswini Venkatesh
- Nitte University Centre for Science Education and Research (NUCSER), K. S. Hegde Medical Academy, Nitte University, Deralakatte, Mangalore, Karnataka, India
| | - Kara Lea Vine
- School of Biological Sciences, University of Wollongong, Wollongong, NSW, Australia ; Centre for Medical & Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia ; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Marie Ranson
- School of Biological Sciences, University of Wollongong, Wollongong, NSW, Australia ; Centre for Medical & Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia ; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
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7
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Takahashi Y, Sheridan P, Niida A, Sawada G, Uchi R, Mizuno H, Kurashige J, Sugimachi K, Sasaki S, Shimada Y, Hase K, Kusunoki M, Kudo S, Watanabe M, Yamada K, Sugihara K, Yamamoto H, Suzuki A, Doki Y, Miyano S, Mori M, Mimori K. The AURKA/TPX2 axis drives colon tumorigenesis cooperatively with MYC. Ann Oncol 2015; 26:935-942. [PMID: 25632068 DOI: 10.1093/annonc/mdv034] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 01/15/2015] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The MYC oncogene has long been established as a central driver in many types of human cancers including colorectal cancer. However, the realization of MYC-targeting therapies remains elusive; as a result, synthetic lethal therapeutic approaches are alternatively being explored. A synthetic lethal therapeutic approach aims to kill MYC-driven tumors by targeting a certain co-regulator on the MYC pathway. PATIENTS AND METHODS We analyzed copy number and expression profiles from 130 colorectal cancer tumors together with publicly available datasets to identify co-regulators on the MYC pathway. Candidates were functionally tested by in vitro assays using colorectal cancer and normal fibroblast cell lines. Additionally, survival analyses were carried out on another 159 colorectal cancer patients and public datasets. RESULTS Our in silico screening identified two MYC co-regulator candidates, AURKA and TPX2, which are interacting mitotic regulators located on chromosome 20q. We found the two candidates showed frequent co-amplification with the MYC locus while expression levels of MYC and the two genes were positively correlated with those of MYC downstream target genes across multiple cancer types. In vitro, the aberrant expression of MYC, AURKA and TPX2 resulted in more aggressive anchorage-independent growth in normal fibroblast cells. Furthermore, knockdown of AURKA or TPX2, or treatment with an AURKA-specific inhibitor effectively suppressed the proliferation of MYC-expressing colorectal cancer cells. Additionally, combined high expression of MYC, AURKA and TPX2 proved to be a poor prognostic indicator of colorectal cancer patient survival. CONCLUSIONS Through bioinformatic analyses and experiments, we proposed TPX2 and AURKA as novel co-regulators on the MYC pathway. Inhibiting the AURKA/TPX2 axis would be a novel synthetic lethal therapeutic approach for MYC-driven cancers.
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Affiliation(s)
- Y Takahashi
- Department of Surgery, Kyushu University Beppu Hospital, Beppu; Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita
| | - P Sheridan
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo
| | - A Niida
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo
| | - G Sawada
- Department of Surgery, Kyushu University Beppu Hospital, Beppu; Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita
| | - R Uchi
- Department of Surgery, Kyushu University Beppu Hospital, Beppu
| | - H Mizuno
- Department of Discovery Research, Kamakura Research Laboratories, Chugai Pharmaceutical Co., Ltd, Kamakura
| | - J Kurashige
- Department of Surgery, Kyushu University Beppu Hospital, Beppu
| | - K Sugimachi
- Department of Surgery, Kyushu University Beppu Hospital, Beppu
| | - S Sasaki
- Department of Surgery, Omori Red Cross Hospital, Tokyo
| | - Y Shimada
- Division of Gastrointestinal Oncology, National Cancer Center Hospital, Tokyo
| | - K Hase
- Department of Surgery, National Defense Medical College, Tokorozawa
| | - M Kusunoki
- Department of Surgery, Mie University, Tsu
| | - S Kudo
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama
| | - M Watanabe
- Department of Surgery, Kitasato University, Sagamihara
| | - K Yamada
- Department of Surgery, Takano Hospital, Kumamoto
| | - K Sugihara
- Department of Surgery, Tokyo Medical and Dental University, Tokyo
| | - H Yamamoto
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita
| | - A Suzuki
- Division of Cancer Genetics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Y Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita
| | - S Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo
| | - M Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita
| | - K Mimori
- Department of Surgery, Kyushu University Beppu Hospital, Beppu.
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Baddela VS, Baufeld A, Yenuganti VR, Vanselow J, Singh D. Suitable housekeeping genes for normalization of transcript abundance analysis by real-time RT-PCR in cultured bovine granulosa cells during hypoxia and differential cell plating density. Reprod Biol Endocrinol 2014; 12:118. [PMID: 25430436 PMCID: PMC4280684 DOI: 10.1186/1477-7827-12-118] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 11/19/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bovine granulosa cell culture models are important to understand molecular mechanisms of ovarian function. Folliculogenesis and luteinization are associated with increasing density of cells and local hypoxic conditions. The current study identified two reliable housekeeping genes useful for gene normalization in granulosa cells under different in vitro conditions. METHODS During the current experiments cells were subjected to different biological and physical stimuli, follicle stimulating hormone, different initial cell plating density and hypoxia. Transcript abundance of seven housekeeping genes was quantified by real-time RT-PCR with co-amplification of the respective external standard. RESULTS Three of the genes, GAPDH, HMBS, and HPRT1 were found to be regulated by initial cell plating density, five of them, GAPDH, HMBS, HPRT1, RPLP0 and RPS18 under hypoxic conditions, but none of them after FSH stimulation. In detail, GAPDH was up regulated, but HPRT1 and HMBS were down regulated at high density and under hypoxia. Expression of RPLP0 and RPS18 was inconsistent, but was significantly down-regulated in particular at high cell density combined with hypoxia. In contrast, TBP and B2M genes were neither regulated under different plating density conditions nor by hypoxia as they showed similar expression levels under all conditions analyzed. CONCLUSIONS The present data indicate that TBP and B2M are appropriate housekeeping genes for normalization of transcript abundance measured by real-time RT-PCR in granulosa cells subjected to different plating densities, oxygen concentrations and FSH stimulation.
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Affiliation(s)
- Vijay S Baddela
- Animal Biochemistry Division, National Dairy Research Institute, Karnal, 132001 Haryana India
| | - Anja Baufeld
- Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Vengala R Yenuganti
- Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Jens Vanselow
- Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Dheer Singh
- Animal Biochemistry Division, National Dairy Research Institute, Karnal, 132001 Haryana India
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Takaoka E, Sonobe H, Akimaru K, Sakamoto S, Shuin T, Daibata M, Taguchi T, Tominaga A. Multiple sites of highly amplified DNA sequences detected by molecular cytogenetic analysis in HS-RMS-2, a new pleomorphic rhabdomyosarcoma cell line. Am J Cancer Res 2012; 2:141-152. [PMID: 22432055 PMCID: PMC3304565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Accepted: 02/16/2012] [Indexed: 05/31/2023] Open
Abstract
A molecular cytogenetic analysis was performed on HS-RMS-2, a cell line established in this laboratory from a rare pleomorphic type of rhabdomyosarcoma. G-banding and multicolor-FISH analyses revealed that the cells have a complex chromosomal composition. Comparative genomic in situ hybridization (CGH) detected eight highly amplified regions at 1p36.1-p36.2, 1p31-p32, 1q21-q31, 8q12-q21, 8q24-qter, 11q12-q13, 12q13-q14 and 18q12-q22, suggesting the co-existence of multiple amplified oncogenes in these tumor cells. Reverse chromosome painting, using a probe regenerated by microdissection of a long marker chromosome, revealed the native location of three of eight possible genes to be on chromosomes 1p31-32, 12q14 and 18q21. FISH using BAC and cosmid probes revealed amplification of JUN (1p31), MYC (8q24), CCND1 (11q13), INT2 (11q13.3), MDM2 (12q14.3-q15) and MALT (18q21). These findings indicate that at least eight amplified oncogenes may contribute to the pathogenesis of a rare pleomorphic type of rhabdomyosarcoma. This new cell line should prove useful for in vitro preclinical studies of molecularly targeted therapies.
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Affiliation(s)
- Eiji Takaoka
- Division of Human Health and Medical Science, Graduate School of Kuroshio Science, Kochi UniversityNankoku, Kochi 783-8505, Japan
- Department of Medical Hygiene, Kochi-Gakuen CollegeAsahi-Tenjin, Kochi 780-0955, Japan
| | - Hiroshi Sonobe
- Department of Clinical Laboratory, Fukuyama National HospitalHiroshima 720-0825, Japan
| | | | - Shuji Sakamoto
- Laboratory of Molecular Biology, The Science Research Center, Kochi UniversityNankoku, Kochi 783-8505, Japan
| | - Taro Shuin
- Department of Urology, Kochi Medical SchoolNankoku, Kochi 783-8505, Japan
| | - Masanori Daibata
- Department of Microbiology and Infection, Kochi Medical SchoolNankoku, Kochi 783-8505, Japan
| | - Takahiro Taguchi
- Division of Human Health and Medical Science, Graduate School of Kuroshio Science, Kochi UniversityNankoku, Kochi 783-8505, Japan
| | - Akira Tominaga
- Division of Human Health and Medical Science, Graduate School of Kuroshio Science, Kochi UniversityNankoku, Kochi 783-8505, Japan
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