951
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Stewart ML, Tamayo P, Wilson AJ, Wang S, Chang YM, Kim JW, Khabele D, Shamji AF, Schreiber SL. KRAS Genomic Status Predicts the Sensitivity of Ovarian Cancer Cells to Decitabine. Cancer Res 2015; 75:2897-906. [PMID: 25968887 PMCID: PMC4506246 DOI: 10.1158/0008-5472.can-14-2860] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 04/28/2015] [Indexed: 01/05/2023]
Abstract
Decitabine, a cancer therapeutic that inhibits DNA methylation, produces variable antitumor response rates in patients with solid tumors that might be leveraged clinically with identification of a predictive biomarker. In this study, we profiled the response of human ovarian, melanoma, and breast cancer cells treated with decitabine, finding that RAS/MEK/ERK pathway activation and DNMT1 expression correlated with cytotoxic activity. Further, we showed that KRAS genomic status predicted decitabine sensitivity in low-grade and high-grade serous ovarian cancer cells. Pretreatment with decitabine decreased the cytotoxic activity of MEK inhibitors in KRAS-mutant ovarian cancer cells, with reciprocal downregulation of DNMT1 and MEK/ERK phosphorylation. In parallel with these responses, decitabine also upregulated the proapoptotic BCL-2 family member BNIP3, which is known to be regulated by MEK and ERK, and heightened the activity of proapoptotic small-molecule navitoclax, a BCL-2 family inhibitor. In a xenograft model of KRAS-mutant ovarian cancer, combining decitabine and navitoclax heightened antitumor activity beyond administration of either compound alone. Our results define the RAS/MEK/DNMT1 pathway as a determinant of sensitivity to DNA methyltransferase inhibition, specifically implicating KRAS status as a biomarker of drug response in ovarian cancer.
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Affiliation(s)
| | - Pablo Tamayo
- The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Andrew J Wilson
- Department of Obstetrics and Gynecology, Vanderbilt University, Nashville, Tennessee
| | - Stephanie Wang
- The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Yun Min Chang
- The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Jong W Kim
- The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Dineo Khabele
- Department of Obstetrics and Gynecology, Vanderbilt University, Nashville, Tennessee
| | - Alykhan F Shamji
- The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
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952
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Tilson SG, Haley EM, Triantafillu UL, Dozier DA, Langford CP, Gillespie GY, Kim Y. ROCK Inhibition Facilitates In Vitro Expansion of Glioblastoma Stem-Like Cells. PLoS One 2015; 10:e0132823. [PMID: 26167936 PMCID: PMC4500389 DOI: 10.1371/journal.pone.0132823] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 06/18/2015] [Indexed: 11/20/2022] Open
Abstract
Due to their stem-like characteristics and their resistance to existing chemo- and radiation therapies, there is a growing appreciation that cancer stem cells (CSCs) are the root cause behind cancer metastasis and recurrence. However, these cells represent a small subpopulation of cancer cells and are difficult to propagate in vitro. Glioblastoma is an extremely deadly form of brain cancer that is hypothesized to have a subpopulation of CSCs called glioblastoma stem cells (GSCs; also called brain tumor initiating cells, BTICs). We propose the use of selective Rho-kinase (ROCK) inhibitors, Y-27632 and fasudil, to promote GSC/BTIC-like cell survival and propagation in vitro. ROCK inhibitors have been implicated in suppressing apoptosis, and it was hypothesized that they would increase the number of GSC/BTIC-like cells grown in vitro and improve cloning efficiencies. Indeed, our data demonstrate that transient and continuous supplementation of non-toxic concentrations of Y-27632 and fasudil inhibited apoptosis, enhanced the cells’ ability to form spheres, and increased stem cell marker expressing GSC/BTIC-like cell subpopulation. Our data indicated that pharmacological and genetic (siRNA) inhibitions of the ROCK pathway facilitates in vitro expansion of GSC/BTIC-like cells. Thus, ROCK pathway inhibition shows promise for future optimization of CSC culture media.
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Affiliation(s)
- Samantha G. Tilson
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama, United States of America
| | - Elizabeth M. Haley
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama, United States of America
| | - Ursula L. Triantafillu
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama, United States of America
| | - David A. Dozier
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama, United States of America
| | - Catherine P. Langford
- Department of Neurosurgery, The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - G. Yancey Gillespie
- Department of Neurosurgery, The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Yonghyun Kim
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama, United States of America
- * E-mail:
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953
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Shinderman-Maman E, Cohen K, Weingarten C, Nabriski D, Twito O, Baraf L, Hercbergs A, Davis PJ, Werner H, Ellis M, Ashur-Fabian O. The thyroid hormone-αvβ3 integrin axis in ovarian cancer: regulation of gene transcription and MAPK-dependent proliferation. Oncogene 2015; 35:1977-87. [PMID: 26165836 DOI: 10.1038/onc.2015.262] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 05/27/2015] [Accepted: 06/05/2015] [Indexed: 12/18/2022]
Abstract
Ovarian carcinoma is the fifth common cause of cancer death in women, despite advanced therapeutic approaches. αvβ3 integrin, a plasma membrane receptor, binds thyroid hormones (L-thyroxine, T4; 3,5,3'-triiodo-L-thyronine, T3) and is overexpressed in ovarian cancer. We have demonstrated selective binding of fluorescently labeled hormones to αvβ3-positive ovarian cancer cells but not to integrin-negative cells. Physiologically relevant T3 (1 nM) and T4 (100 nM) concentrations in OVCAR-3 (high αvβ3) and A2780 (low αvβ3) cells promoted αv and β3 transcription in association with basal integrin levels. This transcription was effectively blocked by RGD (Arg-Gly-Asp) peptide and neutralizing αvβ3 antibodies, excluding T3-induced β3 messenger RNA, suggesting subspecialization of T3 and T4 binding to the integrin receptor pocket. We have provided support for extracellular regulated kinase (ERK)-mediated transcriptional regulation of the αv monomer by T3 and of β3 monomer by both hormones and documented a rapid (30-120 min) and dose-dependent (0.1-1000 nM) ERK activation. OVCAR-3 cells and αvβ3-deficient HEK293 cells treated with αvβ3 blockers confirmed the requirement for an intact thyroid hormone-integrin interaction in ERK activation. In addition, novel data indicated that T4, but not T3, controls integrin's outside-in signaling by phosphorylating tyrosine 759 in the β3 subunit. Both hormones induced cell proliferation (cell counts), survival (Annexin-PI), viability (WST-1) and significantly reduced the expression of genes that inhibit cell cycle (p21, p16), promote mitochondrial apoptosis (Nix, PUMA) and tumor suppression (GDF-15, IGFBP-6), particularly in cells with high integrin expression. At last, we have confirmed that hypothyroid environment attenuated ovarian cancer growth using a novel experimental platform that exploited paired euthyroid and severe hypothyroid serum samples from human subjects. To conclude, our data define a critical role for thyroid hormones as potent αvβ3-ligands, driving ovarian cancer cell proliferation and suggest that disruption of this axis may present a novel treatment strategy in this aggressive disease.
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Affiliation(s)
- E Shinderman-Maman
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Department of Human Molecular Genetics and Biochemistry.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - K Cohen
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Department of Human Molecular Genetics and Biochemistry.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - C Weingarten
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Department of Human Molecular Genetics and Biochemistry.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - D Nabriski
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Endocrinology, Meir Medical Center, Kfar-Saba, Israel
| | - O Twito
- Department of Endocrinology, Meir Medical Center, Kfar-Saba, Israel
| | - L Baraf
- Department of Endocrinology, Meir Medical Center, Kfar-Saba, Israel
| | - A Hercbergs
- Radiation Oncology, Cleveland Clinic, Cleveland, OH, USA
| | - P J Davis
- Department of Medicine, Albany Medical College, Albany, NY, USA
| | - H Werner
- Department of Human Molecular Genetics and Biochemistry.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Ellis
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - O Ashur-Fabian
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Department of Human Molecular Genetics and Biochemistry.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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954
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Hsu KF, Shen MR, Huang YF, Cheng YM, Lin SH, Chow NH, Cheng SW, Chou CY, Ho CL. Overexpression of the RNA-binding proteins Lin28B and IGF2BP3 (IMP3) is associated with chemoresistance and poor disease outcome in ovarian cancer. Br J Cancer 2015; 113:414-24. [PMID: 26158423 PMCID: PMC4522643 DOI: 10.1038/bjc.2015.254] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/22/2015] [Accepted: 06/04/2015] [Indexed: 01/18/2023] Open
Abstract
Background: RNA-binding proteins have an important role in messenger RNA (mRNA) regulation during tumour development and carcinogenesis. In the present study, we examined the insulin-like growth factor 2 mRNA-binding proteins (IGF2BPs; hereafter refered to as IMPs) and Lin28 family expressions in epithelial ovarian carcinoma (EOC) patients and correlated their expression levels with the response to chemotherapy, hCTR1 expression and patient survival. Methods: Patients clinical information, real-time RT-PCR, immunohistochemistry, western blot, Transwell migration invasion assays, and cytotoxicity assays were used. Results: From 140 EOC patients, high expression of IMP3 or Lin28B was associated with poor survival, and women diagnosed at advanced stages with elevated IMP3 and Lin28B were at higher risk of developing chemoresistance. High IMP3 levels combined with high Lin28B levels significantly correlated with the poorest 5-year survival rates. Knockdown of IMP3 or Lin28B decreased cell proliferation, migration, and invasion, and increased the platinum sensitivity, but not taxol sensitivity, of ovarian cancer cells through increased expression of hCTR1, a copper transporter involved in platinum uptake. High expression of hCTR1 correlated with low expression of IMP3/Lin28B and better progression-free survival in advanced-stage EOC patients. Conclusion: Testing for a combination of elevated IMP3 and Lin28B levels could further facilitate the identification of a patient subgroup with the worst prognosis.
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Affiliation(s)
- K-F Hsu
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - M-R Shen
- Department of Pharmacology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Y-F Huang
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Y-M Cheng
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - S-H Lin
- Institute of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - N-H Chow
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - S-W Cheng
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - C-Y Chou
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - C-L Ho
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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955
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Zhang W, Gu Y, Hao Y, Sun Q, Konior K, Wang H, Zilberberg J, Lee WY. Well plate-based perfusion culture device for tissue and tumor microenvironment replication. LAB ON A CHIP 2015; 15:2854-2863. [PMID: 26021852 PMCID: PMC4470735 DOI: 10.1039/c5lc00341e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
There are significant challenges in developing in vitro human tissue and tumor models that can be used to support new drug development and evaluate personalized therapeutics. The challenges include: (1) working with primary cells which are often difficult to maintain ex vivo, (2) mimicking native microenvironments from which primary cells are harvested, and (3) the lack of culture devices that can support these microenvironments to evaluate drug responses in a high-throughput manner. Here we report a versatile well plate-based perfusion culture device that was designed, fabricated and used to: (1) ascertain the role of perfusion in facilitating the expansion of human multiple myeloma cells and evaluate drug response of the cells, (2) preserve the physiological phenotype of primary murine osteocytes by reconstructing the 3D cellular network of osteocytes, and (3) circulate primary murine T cells through a layer of primary murine intestine epithelial cells to recapitulate the interaction of the immune cells with the epithelial cells. Through these diverse case studies, we demonstrate the device's design features to support: (1) the convenient and spatiotemporal placement of cells and biomaterials into the culture wells of the device; (2) the replication of tissues and tumor microenvironments using perfusion, stromal cells, and/or biomaterials; (3) the circulation of non-adherent cells through the culture chambers; and (4) conventional tissue and cell characterization by plate reading, histology, and flow cytometry. Future challenges are identified and discussed from the perspective of manufacturing the device and making its operation for routine and wide use.
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Affiliation(s)
- W Zhang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ, 07030, USA
| | - Y Gu
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ, 07030, USA
| | - Y Hao
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ, 07030, USA
| | - Q Sun
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ, 07030, USA
| | - K Konior
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ, 07030, USA
| | - H Wang
- Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - J Zilberberg
- Research Department, Hackensack University Medical Center, 40 Prospect Ave, Hackensack, NJ, 07601, USA
- John Theurer Cancer Center, Hackensack University Medical Center
| | - W Y Lee
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ, 07030, USA
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956
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Kreuzinger C, Gamperl M, Wolf A, Heinze G, Geroldinger A, Lambrechts D, Boeckx B, Smeets D, Horvat R, Aust S, Hamilton G, Zeillinger R, Cacsire Castillo-Tong D. Molecular characterization of 7 new established cell lines from high grade serous ovarian cancer. Cancer Lett 2015; 362:218-28. [DOI: 10.1016/j.canlet.2015.03.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 03/23/2015] [Accepted: 03/31/2015] [Indexed: 12/27/2022]
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957
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High Potency of a Novel Resveratrol Derivative, 3,3',4,4'-Tetrahydroxy-trans-stilbene, against Ovarian Cancer Is Associated with an Oxidative Stress-Mediated Imbalance between DNA Damage Accumulation and Repair. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:135691. [PMID: 26229578 PMCID: PMC4502315 DOI: 10.1155/2015/135691] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/07/2015] [Accepted: 06/14/2015] [Indexed: 12/31/2022]
Abstract
We explored the effect of a new resveratrol (RVT) derivative, 3,3′,4,4′-tetrahydroxy-trans-stilbene (3,3′,4,4′-THS), on viability, apoptosis, proliferation, and senescence of three representative lines of ovarian cancer cells, that is, A2780, OVCAR-3, and SKOV-3, in vitro. In addition, the mechanistic aspects of 3,3′,4,4′-THS activity, including cell redox homeostasis (the production of reactive oxygen species, activity of enzymatic antioxidants, and magnitude of DNA damage accumulation and repair), and the activity of caspases (3, 8, and 9) and p38 MAPK were examined. The study showed that 3,3′,4,4′-THS affects cancer cell viability much more efficiently than its parent drug. This effect coincided with increased generation of reactive oxygen species, downregulated activity of superoxide dismutase and catalase, and excessive accumulation of 8-hydroxy-2′-deoxyguanosine and its insufficient repair due to decreased expression of DNA glycosylase I. Cytotoxicity elicited by 3,3′,4,4′-THS was related to increased incidence of apoptosis, which was mediated by caspases 3 and 9. Moreover, 3,3′,4,4′-THS inhibited cancer cell proliferation and accelerated senescence, which was accompanied by the activation of p38 MAPK. Collectively, our findings indicate that 3,3′,4,4′-THS may constitute a valuable tool in the fight against ovarian malignancy and that the anticancer capabilities of this stilbene proceed in an oxidative stress-dependent mechanism.
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958
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Chen P, Huhtinen K, Kaipio K, Mikkonen P, Aittomäki V, Lindell R, Hynninen J, Auranen A, Grénman S, Lehtonen R, Carpén O, Hautaniemi S. Identification of Prognostic Groups in High-Grade Serous Ovarian Cancer Treated with Platinum-Taxane Chemotherapy. Cancer Res 2015; 75:2987-98. [PMID: 26122843 DOI: 10.1158/0008-5472.can-14-3242] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 06/04/2015] [Indexed: 11/16/2022]
Abstract
Disseminated high-grade serous ovarian cancer (HGS-OvCa) is an aggressive disease treated with platinum and taxane combination therapy. While initial response can be favorable, the disease typically relapses and becomes resistant to treatment. As genomic alterations in HGS-OvCa are heterogeneous, identification of clinically meaningful molecular markers for outcome prediction is challenging. We developed a novel computational approach (PSFinder) that fuses transcriptomics and clinical data to identify HGS-OvCa prognostic subgroups for targeted treatment. Application of PSFinder to transcriptomics data from 180 HGS-OvCa patients treated with platinum-taxane therapy revealed 61 transcript isoforms that characterize two poor and one good survival-associated groups (P = 0.007). These groups were validated in eight independent data sets, including a prospectively collected ovarian cancer cohort. Two poor prognostic groups have distinct expression profiles and are characteristic by increased hypermethylation and stroma-related genes. Integration of the PSFinder signature and BRCA1/2 mutation status allowed even better stratification of HGS-OvCa patients' prognosis. The herein introduced novel and generally applicable computational approach can identify outcome-related subgroups and facilitate the development of precision medicine to overcome drug resistance. A limited set of biomarkers divides HGS-OvCa into three prognostic groups and predicts patients in need of targeted therapies.
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Affiliation(s)
- Ping Chen
- Research Programs Unit, Genome-Scale Biology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Kaisa Huhtinen
- Department of Pathology, Institute of Biomedicine, Medicity, University of Turku and Turku University Hospital, Turku, Finland
| | - Katja Kaipio
- Department of Pathology, Institute of Biomedicine, Medicity, University of Turku and Turku University Hospital, Turku, Finland
| | - Piia Mikkonen
- Department of Pathology, Institute of Biomedicine, Medicity, University of Turku and Turku University Hospital, Turku, Finland
| | - Viljami Aittomäki
- Research Programs Unit, Genome-Scale Biology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Rony Lindell
- Research Programs Unit, Genome-Scale Biology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Johanna Hynninen
- Department of Obstetrics and Gynecology, Turku University Hospital, Turku, Finland
| | - Annika Auranen
- Department of Obstetrics and Gynecology, Turku University Hospital, Turku, Finland
| | - Seija Grénman
- Department of Obstetrics and Gynecology, Turku University Hospital, Turku, Finland
| | - Rainer Lehtonen
- Research Programs Unit, Genome-Scale Biology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Olli Carpén
- Department of Pathology, Institute of Biomedicine, Medicity, University of Turku and Turku University Hospital, Turku, Finland. Auria Biobank, Turku, Finland.
| | - Sampsa Hautaniemi
- Research Programs Unit, Genome-Scale Biology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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959
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Hofmann NA, Yang J, Trauger SA, Nakayama H, Huang L, Strunk D, Moses MA, Klagsbrun M, Bischoff J, Graier WF. The GPR 55 agonist, L-α-lysophosphatidylinositol, mediates ovarian carcinoma cell-induced angiogenesis. Br J Pharmacol 2015; 172:4107-18. [PMID: 25989290 PMCID: PMC4543616 DOI: 10.1111/bph.13196] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 04/10/2015] [Accepted: 05/11/2015] [Indexed: 12/24/2022] Open
Abstract
Background and Purpose Highly vascularized ovarian carcinoma secretes the putative endocannabinoid and GPR55 agonist, L-α-lysophosphatidylinositol (LPI), into the circulation. We aimed to assess the involvement of this agonist and its receptor in ovarian cancer angiogenesis. Experimental Approach Secretion of LPI by three ovarian cancer cell lines (OVCAR-3, OVCAR-5 and COV-362) was tested by mass spectrometry. Involvement of cancer cell-derived LPI on angiogenesis was tested in the in vivo chicken chorioallantoic membrane (CAM) assay along with the assessment of the effect of LPI on proliferation, network formation, and migration of neonatal and adult human endothelial colony-forming cells (ECFCs). Engagement of GPR55 was verified by using its pharmacological inhibitor CID16020046 and diminution of GPR55 expression by four different target-specific siRNAs. To study underlying signal transduction, Western blot analysis was performed. Key Results Ovarian carcinoma cell-derived LPI stimulated angiogenesis in the CAM assay. Applied LPI stimulated proliferation, network formation, and migration of neonatal ECFCs in vitro and angiogenesis in the in vivo CAM. The pharmacological GPR55 inhibitor CID16020046 inhibited LPI-stimulated ECFC proliferation, network formation and migration in vitro as well as ovarian carcinoma cell- and LPI-induced angiogenesis in vivo. Four target-specific siRNAs against GPR55 prevented these effects of LPI on angiogenesis. These pro-angiogenic effects of LPI were transduced by GPR55-dependent phosphorylation of ERK1/2 and p38 kinase. Conclusions and Implications We conclude that inhibiting the pro-angiogenic LPI/GPR55 pathway appears a promising target against angiogenesis in ovarian carcinoma.
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Affiliation(s)
- Nicole A Hofmann
- Institute for Molecular Biology and Biochemistry, Medical University Graz, Graz, Austria.,Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Jiang Yang
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Sunia A Trauger
- FAS Small Molecule Mass Spectrometry Facility, Harvard University, Boston, MA, USA
| | - Hironao Nakayama
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Lan Huang
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Dirk Strunk
- Experimental and Clinical Cell Therapy Institute, Paracelsus Medical University, Salzburg, Austria
| | - Marsha A Moses
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Michael Klagsbrun
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Joyce Bischoff
- Department of Surgery, Harvard Medical School, Boston, MA, USA.,Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Wolfgang F Graier
- Institute for Molecular Biology and Biochemistry, Medical University Graz, Graz, Austria
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960
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Dobbin ZC, Katre AA, Steg AD, Erickson BK, Shah MM, Alvarez RD, Conner MG, Schneider D, Chen D, Landen CN. Using heterogeneity of the patient-derived xenograft model to identify the chemoresistant population in ovarian cancer. Oncotarget 2015; 5:8750-64. [PMID: 25209969 PMCID: PMC4226719 DOI: 10.18632/oncotarget.2373] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A cornerstone of preclinical cancer research has been the use of clonal cell lines. However, this resource has underperformed in its ability to effectively identify novel therapeutics and evaluate the heterogeneity in a patient's tumor. The patient-derived xenograft (PDX) model retains the heterogeneity of patient tumors, allowing a means to not only examine efficacy of a therapy, but also basic tenets of cancer biology in response to treatment. Herein we describe the development and characterization of an ovarian-PDX model in order to study the development of chemoresistance. We demonstrate that PDX tumors are not simply composed of tumor-initiating cells, but recapitulate the original tumor's heterogeneity, oncogene expression profiles, and clinical response to chemotherapy. Combined carboplatin/paclitaxel treatment of PDX tumors enriches the cancer stem cell populations, but persistent tumors are not entirely composed of these populations. RNA-Seq analysis of six pair of treated PDX tumors compared to untreated tumors demonstrates a consistently contrasting genetic profile after therapy, suggesting similar, but few, pathways are mediating chemoresistance. Pathways and genes identified by this methodology represent novel approaches to targeting the chemoresistant population in ovarian cancer
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Affiliation(s)
- Zachary C Dobbin
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Alabama at Birmingham. NIH Medical Scientist Training Program, University of Alabama at Birmingham
| | - Ashwini A Katre
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Alabama at Birmingham
| | - Adam D Steg
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Alabama at Birmingham
| | - Britt K Erickson
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Alabama at Birmingham
| | - Monjri M Shah
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Alabama at Birmingham
| | - Ronald D Alvarez
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Alabama at Birmingham
| | | | - David Schneider
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham
| | - Dongquan Chen
- Division of Preventative Medicine, Department of Medicine, University of Alabama at Birmingham
| | - Charles N Landen
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, The University of Virginia, Charlottesville, VA
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961
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Tan CW, Hirokawa Y, Burgess AW. Analysis of Wnt signalling dynamics during colon crypt development in 3D culture. Sci Rep 2015; 5:11036. [PMID: 26087250 PMCID: PMC4471889 DOI: 10.1038/srep11036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 05/05/2015] [Indexed: 12/20/2022] Open
Abstract
Many systems biology studies lack context-relevant data and as a consequence the predictive capabilities can be limited in developing targeted cancer therapeutics. Production of colon crypt in vitro is ideal for studying colon systems biology. This report presents the first production of, to our knowledge, physiologically-shaped, functional colon crypts in vitro (i.e. single crypts with cells expressing Mucin 2 and Chromogranin A). Time-lapsed monitoring of crypt formation revealed an increased frequency of single-crypt formation in the absence of noggin. Using quantitative 3D immunofluorescence of β-catenin and E-cadherin, spatial-temporal dynamics of these proteins in normal colon crypt cells stimulated with Wnt3A or inhibited by cycloheximide has been measured. Colon adenoma cultures established from APCmin/+ mouse have developmental differences and β-catenin spatial localization compared to normal crypts. Quantitative data describing the effects of signalling pathways and proteins dynamics for both normal and adenomatous colon crypts is now within reach to inform a systems approach to colon crypt biology.
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Affiliation(s)
- Chin Wee Tan
- 1] Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052 Australia [2] Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC 3052 Australia
| | - Yumiko Hirokawa
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052 Australia
| | - Antony W Burgess
- 1] Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052 Australia [2] Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC 3052 Australia [3] Department of Surgery, University of Melbourne, Royal Melbourne Hospital, Parkville, VIC 3050, Australia
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962
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Ince TA, Sousa AD, Jones MA, Harrell JC, Agoston ES, Krohn M, Selfors LM, Liu W, Chen K, Yong M, Buchwald P, Wang B, Hale KS, Cohick E, Sergent P, Witt A, Kozhekbaeva Z, Gao S, Agoston AT, Merritt MA, Foster R, Rueda BR, Crum CP, Brugge JS, Mills GB. Characterization of twenty-five ovarian tumour cell lines that phenocopy primary tumours. Nat Commun 2015; 6:7419. [PMID: 26080861 PMCID: PMC4473807 DOI: 10.1038/ncomms8419] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 05/05/2015] [Indexed: 02/06/2023] Open
Abstract
Currently available human tumour cell line panels consist of a small number of lines in each lineage that generally fail to retain the phenotype of the original patient tumour. Here we develop a cell culture medium that enables us to routinely establish cell lines from diverse subtypes of human ovarian cancers with >95% efficiency. Importantly, the 25 new ovarian tumour cell lines described here retain the genomic landscape, histopathology and molecular features of the original tumours. Furthermore, the molecular profile and drug response of these cell lines correlate with distinct groups of primary tumours with different outcomes. Thus, tumour cell lines derived using this methodology represent a significantly improved platform to study human tumour pathophysiology and response to therapy.
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Affiliation(s)
- Tan A Ince
- Department of Pathology, Interdisciplinary Stem Cell Institute, Braman Family Breast Cancer Institute, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida 33136, USA
| | - Aurea D Sousa
- Department of Pathology, Interdisciplinary Stem Cell Institute, Braman Family Breast Cancer Institute, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida 33136, USA
| | - Michelle A Jones
- Department of Pathology, Interdisciplinary Stem Cell Institute, Braman Family Breast Cancer Institute, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida 33136, USA
| | - J Chuck Harrell
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - Elin S Agoston
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Marit Krohn
- Department of Systems Biology, MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Laura M Selfors
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Wenbin Liu
- Department of Bioinformatics and Computational Biology, MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Ken Chen
- Department of Bioinformatics and Computational Biology, MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Mao Yong
- Department of Bioinformatics and Computational Biology, MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Peter Buchwald
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, Florida 33136, USA
| | - Bin Wang
- Department of Pathology, Interdisciplinary Stem Cell Institute, Braman Family Breast Cancer Institute, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida 33136, USA
| | - Katherine S Hale
- Department of Systems Biology, MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Evan Cohick
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Petra Sergent
- Vincent Center for Reproductive Biology, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Abigail Witt
- Department of Pathology, Interdisciplinary Stem Cell Institute, Braman Family Breast Cancer Institute, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida 33136, USA
| | - Zhanna Kozhekbaeva
- Department of Pathology, Interdisciplinary Stem Cell Institute, Braman Family Breast Cancer Institute, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida 33136, USA
| | - Sizhen Gao
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Agoston T Agoston
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Melissa A Merritt
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Rosemary Foster
- Vincent Center for Reproductive Biology, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Bo R Rueda
- Vincent Center for Reproductive Biology, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Christopher P Crum
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Joan S Brugge
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Gordon B Mills
- Department of Systems Biology, MD Anderson Cancer Center, Houston, Texas 77030, USA
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963
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The homeoprotein DLX4 stimulates NF-κB activation and CD44-mediated tumor-mesothelial cell interactions in ovarian cancer. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:2298-308. [PMID: 26067154 DOI: 10.1016/j.ajpath.2015.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/09/2015] [Accepted: 04/07/2015] [Indexed: 12/13/2022]
Abstract
Ovarian cancers often highly express inflammatory cytokines and form implants throughout the peritoneal cavity. However, the mechanisms that drive inflammatory signaling and peritoneal metastasis of ovarian cancer are poorly understood. We previously identified that high expression of DLX4, a transcription factor encoded by a homeobox gene, is associated with reduced survival of ovarian cancer patients. In this study, we identified that DLX4 stimulates attachment of ovarian tumor cells to peritoneal mesothelial cells in vitro and increases the numbers of peritoneal implants in xenograft models. DLX4 induced expression of the cell surface molecule CD44 in ovarian tumor cells, and inhibition of CD44 abrogated the ability of DLX4 to stimulate tumor-mesothelial cell interactions. The induction of CD44 by DLX4 was attributed to increased activity of NF-κB that was stimulated by the inflammatory cytokine IL-1β, a transcriptional target of DLX4. The stimulatory effects of DLX4 on CD44 levels and tumor-mesothelial cell interactions were abrogated when IL-1β or NF-κB was inhibited in tumor cells. Furthermore, DLX4 expression levels strongly correlated with NF-κB activation and disease stage in clinical specimens of ovarian cancer. Collectively, these findings indicate that DLX4 induces CD44 by stimulating IL-1β-mediated NF-κB activity, thereby promoting peritoneal metastasis of ovarian cancer.
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964
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Prasai B, Silvers WC, McCarley RL. Oxidoreductase-Facilitated Visualization and Detection of Human Cancer Cells. Anal Chem 2015; 87:6411-8. [PMID: 26005900 DOI: 10.1021/acs.analchem.5b01615] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
UNLABELLED Achieving highly selective and sensitive detection/visualization of intracellular biological events through the use of cell-penetrable, bioanalyte-activatable, turn-on probes is dependent on the presence of specific event-linked cellular biomarkers, if and only if there exist activatable probes that appropriately respond to the biomarker analyte. Here is described the evaluation of, and use in cellular imaging studies, a previously undisclosed naphthalimide probe QMeNN, whose fluorescence is deactivated by photoinduced electron transfer (PeT) quenching that results from the presence of a covalently linked biomarker-specific quinone trigger group. Highly selective and rapid activation of the quinone group by the human cancer tumor-linked NAD(P)H quinone oxido-reductase isozyme 1 (hNQO1) results in fast trigger group removal to yield a highly fluorescent green-energy-range reporter that possesses a high molar absorptivity; there is a 136-fold increase in brightness for the enzymatically produced reporter versus probe precursor, a value 4 times greater than previously reported for the hNQO1 analyte. The novel probe is taken up and activated rapidly within only hNQO1-positive human cancer cells; addition of an hNQO1 inhibitor prevents the selective activation of the probe. Comparison of cytosolic fluorescence intensity in positive cells versus background in negative cells yields a quantitative metric (positive-to-negative ratio, PNR) for judging hNQO1 activity. We show it is possible to determine hNQO1 presence in previously studied colorectal cancer cells and the unexplored ovarian cancer cell line NIH:OVCAR-3, with respective PNR values of 926 and 34 being obtained. Even with 10 min probe incubation, ready discrimination of positive cells from negative cells is achieved. Cell viability is unaffected by probe presence, thereby highlighting the practicality of probe use in live-cell imaging applications.
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Affiliation(s)
- Bijeta Prasai
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804, United States
| | - William C Silvers
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804, United States
| | - Robin L McCarley
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804, United States
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965
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Mitra AK, Davis DA, Tomar S, Roy L, Gurler H, Xie J, Lantvit DD, Cardenas H, Fang F, Liu Y, Loughran E, Yang J, Sharon Stack M, Emerson RE, Cowden Dahl KD, V Barbolina M, Nephew KP, Matei D, Burdette JE. In vivo tumor growth of high-grade serous ovarian cancer cell lines. Gynecol Oncol 2015; 138:372-7. [PMID: 26050922 DOI: 10.1016/j.ygyno.2015.05.040] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/28/2015] [Accepted: 05/29/2015] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Genomic studies of ovarian cancer (OC) cell lines frequently used in research revealed that these cells do not fully represent high-grade serous ovarian cancer (HGSOC), the most common OC histologic type. However, OC lines that appear to genomically resemble HGSOC have not been extensively used and their growth characteristics in murine xenografts are essentially unknown. METHODS To better understand growth patterns and characteristics of HGSOC cell lines in vivo, CAOV3, COV362, KURAMOCHI, NIH-OVCAR3, OVCAR4, OVCAR5, OVCAR8, OVSAHO, OVKATE, SNU119 and UWB1.289 cells were assessed for tumor formation in nude mice. Cells were injected intraperitoneally (i.p.) or subcutaneously (s.c.) in female athymic nude mice and allowed to grow (maximum of 90 days) and tumor formation was analyzed. All tumors were sectioned and assessed using H&E staining and immunohistochemistry for p53, PAX8 and WT1 expression. RESULTS Six lines (OVCAR3, OVCAR4, OVCAR5, OVCAR8, CAOV3, and OVSAHO) formed i.p xenografts with HGSOC histology. OVKATE and COV362 formed s.c. tumors only. Rapid tumor formation was observed for OVCAR3, OVCAR5 and OVCAR8, but only OVCAR8 reliably formed ascites. Tumors derived from OVCAR3, OVCAR4, and OVKATE displayed papillary features. Of the 11 lines examined, three (Kuramochi, SNU119 and UWB1.289) were non-tumorigenic. CONCLUSIONS Our findings help further define which HGSOC cell models reliably generate tumors and/or ascites, critical information for preclinical drug development, validating in vitro findings, imaging and prevention studies by the OC research community.
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Affiliation(s)
- Anirban K Mitra
- Medical Sciences Program, Indiana University School of Medicine, Indiana University, Bloomington, IN, United States
| | - David A Davis
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, IL, United States
| | - Sunil Tomar
- Medical Sciences Program, Indiana University School of Medicine, Indiana University, Bloomington, IN, United States
| | - Lynn Roy
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine-South Bend; Harper Cancer Research Institute, Notre Dame, IN
| | - Hilal Gurler
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, United States
| | - Jia Xie
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, United States
| | - Daniel D Lantvit
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, IL, United States
| | - Horacio Cardenas
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Fang Fang
- Medical Sciences Program, Indiana University School of Medicine, Indiana University, Bloomington, IN, United States
| | - Yueying Liu
- Harper Cancer Research Institute, Notre Dame, IN; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, United States
| | - Elizabeth Loughran
- Harper Cancer Research Institute, Notre Dame, IN; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, United States
| | - Jing Yang
- Harper Cancer Research Institute, Notre Dame, IN; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, United States
| | - M Sharon Stack
- Harper Cancer Research Institute, Notre Dame, IN; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, United States
| | - Robert E Emerson
- Department of Pathology Indiana University School of Medicine, Indianapolis, IN, United States
| | - Karen D Cowden Dahl
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine-South Bend; Harper Cancer Research Institute, Notre Dame, IN; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, United States
| | - Maria V Barbolina
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, United States
| | - Kenneth P Nephew
- Medical Sciences Program, Indiana University School of Medicine, Indiana University, Bloomington, IN, United States; Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Daniela Matei
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Joanna E Burdette
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, IL, United States
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966
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Schrauwen S, Coenegrachts L, Cattaneo A, Hermans E, Lambrechts D, Amant F. The antitumor effect of metformin with and without carboplatin on primary endometrioid endometrial carcinoma in vivo. Gynecol Oncol 2015; 138:378-82. [PMID: 26050920 DOI: 10.1016/j.ygyno.2015.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVES New treatment options for advanced and recurrent endometrial carcinoma (EC) are necessary. Epidemiological studies showed that diabetic patients using metformin have reduced risks of endometrial cancer (EC) incidence. Moreover, pre- and clinical studies demonstrated an antitumor effect by metformin, with and without additional treatments, for different solid malignancies. However, cancer cell-autonomous effects of metformin on EC have not been fully characterized yet. The aim of this study was to investigate the effect of metformin, with or without carboplatin, on patient-derived primary endometrioid EC cells xenografted in nude mice, to assess its ability to reduce or impair growth in already established tumors. METHODS Two xenograft models were established by subcutaneous inoculation of primary endometrioid EC cell suspensions. Tumors were allowed to grow and then mice were treated with metformin (250 mg/kg, daily, p.o.), carboplatin (50 mg/kg, 1×/week, i.p.), or the combination of both compounds at the same concentration as single treatment, for three weeks. Effects of metformin treatment on the tumor mass were determined by tumor growth follow-up. Metformin influences on AMPK/mTOR cell signaling were evaluated by investigating AKT, AMPK and S6 phosphorylation levels. RESULTS In vivo, metformin did not affect the growth of EC tumors established from patient-derived primary cultures and the phosphorylation of AKT, AMPK and S6. In addition, no enhanced antitumor effect was determined by combining metformin and carboplatin treatments. CONCLUSIONS Metformin, at clinically relevant concentrations, did not show effects on the growth of already established tumors. Adding metformin to carboplatin did not have synergistic effects.
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Affiliation(s)
- Stefanie Schrauwen
- KU Leuven - University of Leuven, University Hospitals Leuven, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, B-3000 Leuven, Belgium.
| | - Lieve Coenegrachts
- KU Leuven - University of Leuven, University Hospitals Leuven, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, B-3000 Leuven, Belgium.
| | - Anna Cattaneo
- KU Leuven - University of Leuven, University Hospitals Leuven, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, B-3000 Leuven, Belgium.
| | - Els Hermans
- KU Leuven - University of Leuven, University Hospitals Leuven, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, B-3000 Leuven, Belgium.
| | - Diether Lambrechts
- KU Leuven, Department of Oncology, Laboratory for Translational Genetics, B-3000 Leuven, Belgium; VIB, Vesalius Research Center (VRC), B-3000 Leuven, Belgium.
| | - Frédéric Amant
- KU Leuven - University of Leuven, University Hospitals Leuven, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, B-3000 Leuven, Belgium.
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967
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The side population of ovarian cancer cells defines a heterogeneous compartment exhibiting stem cell characteristics. Oncotarget 2015; 5:7027-39. [PMID: 25216521 PMCID: PMC4196181 DOI: 10.18632/oncotarget.2053] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Cancer stem cells (CSC) are believed to be involved in tumor evasion of classical antitumor therapies and have thus become an attractive target for further improvement of anticancer strategies. However, the existence and identity of CSC are still a matter of controversy. In a systematic screen of 13 ovarian cancer cell lines we show that cells with stem cell properties are reliably detectable as a minor population, characterized by ABC transporter expression resulting in the side population (SP) phenotype. In different cell lines, either ABCG2 or ABCB1 was found to be responsible for this effect. Purified SP cells featured virtually all characteristics of bona fide CSC, including clonogenicity, asymmetric division and high tumorigenicity in vivo. Using in-depth phenotyping by multicolor flow cytometry, we found that among the investigated ovarian cancer cell lines the SP compartment exhibits tremendous heterogeneity and is composed of multiple phenotypically distinct subpopulations. Thus, our study confirms previous results showing that CSC are contained within the SP. However, the exact identity of the CSC is still disguised by the high complexity of the CSC-containing compartment. Further functional studies are needed to determine whether a single cellular subset can unambiguously be defined as CSC or whether multiple stem cell-like cells with different properties coexist. Moreover, the observed heterogeneity may reflect a high level of plasticity and likely influences tumor progression, escape from immune-surveillance and development of resistance to anticancer therapies and should therefore be considered in the development of new treatment strategies.
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968
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Dreaden EC, Kong YW, Morton SW, Correa S, Choi KY, Shopsowitz KE, Renggli K, Drapkin R, Yaffe MB, Hammond PT. Tumor-Targeted Synergistic Blockade of MAPK and PI3K from a Layer-by-Layer Nanoparticle. Clin Cancer Res 2015; 21:4410-9. [PMID: 26034127 DOI: 10.1158/1078-0432.ccr-15-0013] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 05/12/2015] [Indexed: 12/13/2022]
Abstract
PURPOSE Cross-talk and feedback between the RAS/RAF/MEK/ERK and PI3K/AKT/mTOR cell signaling pathways is critical for tumor initiation, maintenance, and adaptive resistance to targeted therapy in a variety of solid tumors. Combined blockade of these pathways-horizontal blockade-is a promising therapeutic strategy; however, compounded dose-limiting toxicity of free small molecule inhibitor combinations is a significant barrier to its clinical application. EXPERIMENTAL DESIGN AZD6244 (selumetinib), an allosteric inhibitor of Mek1/2, and PX-866, a covalent inhibitor of PI3K, were co-encapsulated in a tumor-targeting nanoscale drug formulation-layer-by-layer (LbL) nanoparticles. Structure, size, and surface charge of the nanoscale formulations were characterized, in addition to in vitro cell entry, synergistic cell killing, and combined signal blockade. In vivo tumor targeting and therapy was investigated in breast tumor xenograft-bearing NCR nude mice by live animal fluorescence/bioluminescence imaging, Western blotting, serum cytokine analysis, and immunohistochemistry. RESULTS Combined MAPK and PI3K axis blockade from the nanoscale formulations (160 ± 20 nm, -40 ± 1 mV) was synergistically toxic toward triple-negative breast (MDA-MB-231) and RAS-mutant lung tumor cells (KP7B) in vitro, effects that were further enhanced upon encapsulation. In vivo, systemically administered LbL nanoparticles preferentially targeted subcutaneous MDA-MB-231 tumor xenografts, simultaneously blocked tumor-specific phosphorylation of the terminal kinases Erk and Akt, and elicited significant disease stabilization in the absence of dose-limiting hepatotoxic effects observed from the free drug combination. Mice receiving untargeted, but dual drug-loaded nanoparticles exhibited progressive disease. CONCLUSIONS Tumor-targeting nanoscale drug formulations could provide a more safe and effective means to synergistically block MAPK and PI3K in the clinic.
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Affiliation(s)
- Erik C Dreaden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Yi Wen Kong
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Stephen W Morton
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Santiago Correa
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Ki Young Choi
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Kevin E Shopsowitz
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Kasper Renggli
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Ronny Drapkin
- Penn Ovarian Cancer Research Center, Basser Research Center for BRCA, University of Pennsylvania, Philadelphia, Pennsylvania. Perelman Center for Advanced Medicine, Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania. Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael B Yaffe
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts. Division of Acute Care Surgery, Trauma, and Critical Care, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
| | - Paula T Hammond
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts. Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts.
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969
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Chen B, Sirota M, Fan-Minogue H, Hadley D, Butte AJ. Relating hepatocellular carcinoma tumor samples and cell lines using gene expression data in translational research. BMC Med Genomics 2015; 8 Suppl 2:S5. [PMID: 26043652 PMCID: PMC4460709 DOI: 10.1186/1755-8794-8-s2-s5] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cancer cell lines are used extensively to study cancer biology and to test hypotheses in translational research. The relevance of cell lines is dependent on how closely they resemble the tumors being studied. Relating tumors and cell lines, and recognizing their similarities and differences are thus very important for translational research. Rapid advances in genomics have led to the generation of large volumes of genomic and transcriptomic data for a diverse set of primary cancer samples, normal tissue samples and cancer cell lines. Hepatocellular Carcinoma (HCC) is one of the most common tumors worldwide, with high occurrence in Asia and sub-Saharan regions. The current effective treatments of HCC remain limited. In this work, we compared the gene expression measurements of 200 HCC tumor samples from The Cancer Genome Atlas and over 1000 cancer cell lines including 25 HCC cancer cell lines from Cancer Cell Line Encyclopedia. We showed that the HCC tumor samples correlate closely with HCC cell lines in comparison to cell lines derived from other tumor types. We further demonstrated that the most commonly used HCC cell lines resemble HCC tumors, while we identified nearly half of the cell lines that do not resemble primary tumors. Interestingly, a substantial number of genes that are critical for disease development or drug response are either expressed at low levels or absent among highly correlated cell lines; additional attention should be paid to these genes in translational research. Our study will be used to guide the selection of HCC cell lines and pinpoint the specific genes that are differentially expressed in either tumors or cell lines.
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970
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Boone JD, Dobbin ZC, Straughn JM, Buchsbaum DJ. Ovarian and cervical cancer patient derived xenografts: The past, present, and future. Gynecol Oncol 2015; 138:486-91. [PMID: 26026736 DOI: 10.1016/j.ygyno.2015.05.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/21/2015] [Accepted: 05/22/2015] [Indexed: 12/28/2022]
Abstract
Preclinical research in gynecologic malignancies has largely relied upon cloned cancer-derived cell lines and tumor xenografts derived from these cell lines. Unfortunately, the use of cell lines for translational research has disadvantages because genetic and phenotypic alterations from serial passaging have resulted in expression profiles that are different from the original patient tumors. The patient-derived xenograft (PDX) model derived from human tumor not previously cultured has shown better representation of the heterogeneity of gynecologic malignancies and the human tumor microenvironment with preservation of cytogenetics, cellular complexity, and vascular and stromal tumor architecture. Studies have shown promise with these models to analyze tumor development and adaptation, test drug efficacy, and predict clinical outcomes. Their ultimate value may be seen with preclinical drug screening including novel targeted therapies, biomarker identification, and the development of individualized treatment plans. This article reviews PDX model development, current studies testing chemotherapeutics and targeted therapies, and limitations of the PDX model in gynecologic malignancies.
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Affiliation(s)
- Jonathan D Boone
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, University of Alabama at Birmingham, United States.
| | - Zachary C Dobbin
- University of Alabama at Birmingham School of Medicine, United States
| | - J Michael Straughn
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, University of Alabama at Birmingham, United States
| | - Donald J Buchsbaum
- Department of Radiation Oncology, University of Alabama at Birmingham, United States
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971
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Zhang W, Gu Y, Sun Q, Siegel DS, Tolias P, Yang Z, Lee WY, Zilberberg J. Ex Vivo Maintenance of Primary Human Multiple Myeloma Cells through the Optimization of the Osteoblastic Niche. PLoS One 2015; 10:e0125995. [PMID: 25973790 PMCID: PMC4431864 DOI: 10.1371/journal.pone.0125995] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 03/27/2015] [Indexed: 11/18/2022] Open
Abstract
We previously reported a new approach for culturing difficult-to-preserve primary patient-derived multiple myeloma cells (MMC) using an osteoblast (OSB)-derived 3D tissue scaffold constructed in a perfused microfluidic environment and a culture medium supplemented with patient plasma. In the current study, we used this biomimetic model to show, for the first time, that the long-term survival of OSB is the most critical factor in maintaining the ex vivo viability and proliferative capacity of MMC. We found that the adhesion and retention of MMC to the tissue scaffold was meditated by osteoblastic N-cadherin, as one of potential mechanisms that regulate MMC-OSB interactions. However, in the presence of MMC and patient plasma, the viability and osteogenic activity of OSB became gradually compromised, and consequently MMC could not remain viable over 3 weeks. We demonstrated that the long-term survival of both OSB and MMC could be enhanced by: (1) optimizing perfusion flow rate and patient-derived plasma composition in the culture medium and (2) replenishing OSB during culture as a practical means of prolonging MMC's viability beyond several weeks. These findings were obtained using a high-throughput well plate-based perfusion device from the perspective of optimizing the ex vivo preservation of patient-derived MM biospecimens for downstream use in biological studies and chemosensitivity analyses.
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Affiliation(s)
- Wenting Zhang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, New Jersey, 07030, United States of America
| | - Yexin Gu
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, New Jersey, 07030, United States of America
| | - Qiaoling Sun
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, New Jersey, 07030, United States of America
| | - David S. Siegel
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, New Jersey, 07601, United States of America
| | - Peter Tolias
- Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey, 07030, United States of America
- Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, New Jersey, 07030, United States of America
| | - Zheng Yang
- Research Department, Hackensack University Medical Center, Hackensack, New Jersey, 07601, United States of America
| | - Woo Y. Lee
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, New Jersey, 07030, United States of America
| | - Jenny Zilberberg
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, New Jersey, 07601, United States of America
- Research Department, Hackensack University Medical Center, Hackensack, New Jersey, 07601, United States of America
- * E-mail:
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972
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Challagundla KB, Wise PM, Neviani P, Chava H, Murtadha M, Xu T, Kennedy R, Ivan C, Zhang X, Vannini I, Fanini F, Amadori D, Calin GA, Hadjidaniel M, Shimada H, Jong A, Seeger RC, Asgharzadeh S, Goldkorn A, Fabbri M. Exosome-mediated transfer of microRNAs within the tumor microenvironment and neuroblastoma resistance to chemotherapy. J Natl Cancer Inst 2015; 107:djv135. [PMID: 25972604 DOI: 10.1093/jnci/djv135] [Citation(s) in RCA: 272] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND How exosomic microRNAs (miRNAs) contribute to the development of drug resistance in the context of the tumor microenvironment has not been previously described in neuroblastoma (NBL). METHODS Coculture experiments were performed to assess exosomic transfer of miR-21 from NBL cells to human monocytes and miR-155 from human monocytes to NBL cells. Luciferase reporter assays were performed to assess miR-155 targeting of TERF1 in NBL cells. Tumor growth was measured in NBL xenografts treated with Cisplatin and peritumoral exosomic miR-155 (n = 6 mice per group) CD163, miR-155, and TERF1 levels were assessed in 20 NBL primary tissues by Human Exon Arrays and quantitative real-time polymerase chain reaction. Student's t test was used to evaluate the differences between treatment groups. All statistical tests were two-sided. RESULTS miR-21 mean fold change (f.c.) was 12.08±0.30 (P < .001) in human monocytes treated with NBL derived exosomes for 48 hours, and miR-155 mean f.c. was 4.51±0.25 (P < .001) in NBL cells cocultured with human monocytes for 48 hours. TERF1 mean luciferase activity in miR-155 transfected NBL cells normalized to scrambled was 0.36 ± 0.05 (P <.001). Mean tumor volumes in Dotap-miR-155 compared with Dotap-scrambled were 322.80±120mm(3) and 76.00±39.3mm(3), P = .002 at day 24, respectively. Patients with high CD163 infiltrating NBLs had statistically significantly higher intratumoral levels of miR-155 (P = .04) and lower levels of TERF1 mRNA (P = .02). CONCLUSIONS These data indicate a unique role of exosomic miR-21 and miR-155 in the cross-talk between NBL cells and human monocytes in the resistance to chemotherapy, through a novel exosomic miR-21/TLR8-NF-кB/exosomic miR-155/TERF1 signaling pathway.
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Affiliation(s)
- Kishore B Challagundla
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Petra M Wise
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Paolo Neviani
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Haritha Chava
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Mariam Murtadha
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Tong Xu
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Rebekah Kennedy
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Cristina Ivan
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Xinna Zhang
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Ivan Vannini
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Francesca Fanini
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Dino Amadori
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - George A Calin
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Michael Hadjidaniel
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Hiroyuki Shimada
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Ambrose Jong
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Robert C Seeger
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Shahab Asgharzadeh
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Amir Goldkorn
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA)
| | - Muller Fabbri
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA; and Departments of Pediatrics and Molecular Microbiology & Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA (KBC, PMW, PN, HC, MM, MF); Division of Medical Oncology, Department of Internal Medicine, University of Southern California Keck School of Medicine and Norris Comprehensive Cancer Center, Los Angeles, CA (TX, AG); Division of Hematology/Oncology, Children's Hospital Los Angeles, Los Angeles, CA (RK, MH, AJ, RCS, SA); Departments of Experimental Therapeutics and Leukemia and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (CI, GAC); Department of Gynecologic Oncology and Reproductive Medicine and The Center for RNA interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX (XZ); Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) s.r.l., IRCCS, Gene Therapy Unit, Meldola (FC) 47014, Italy (IV, FF, DA); Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA (HS, SA).
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Yi H, Ye J, Yang XM, Zhang LW, Zhang ZG, Chen YP. High-grade ovarian cancer secreting effective exosomes in tumor angiogenesis. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:5062-5070. [PMID: 26191200 PMCID: PMC4503072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 04/15/2015] [Indexed: 06/04/2023]
Abstract
Ovarian cancer, the most lethal gynecological cancer, related closely to tumor stage. High-grade ovarian cancer always results in a late diagnose and high recurrence, which reduce survival within five years. Until recently, curable therapy is still under research and anti-angiogenesis proves a promising way. Tumor-derived exosomes are essential in tumor migration and metastases such as angiogenesis is enhanced by exosomes. In our study, we have made comparison between high-grade and unlikely high-grade serous ovarian cancer cells on exosomal function of endothelial cells proliferation, migration and tube formation. Exosomes derived from high-grade ovarian cancer have a profound impact on angiogenesis with comparison to unlikely high-grade ovarian cancer. Proteomic profiles revealed some potential proteins involved in exosomal function of angiogenesis such as ATF2, MTA1, ROCK1/2 and so on. Therefore, exosomes plays an influential role in angiogenesis in ovarian serous cancer and also function more effectively in high-grade ovarian cancer cells.
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Affiliation(s)
- Huan Yi
- Fujian Maternity and Children Health Hospital Fujian Medical University Teaching HospitalFuzhou 350005, China
| | - Jun Ye
- The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, China
| | - Xiao-Mei Yang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Li-Wen Zhang
- The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, China
| | - Zhi-Gang Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Ya-Ping Chen
- The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, China
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974
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Mutvei AP, Fredlund E, Lendahl U. Frequency and distribution of Notch mutations in tumor cell lines. BMC Cancer 2015; 15:311. [PMID: 25907971 PMCID: PMC4430925 DOI: 10.1186/s12885-015-1278-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 03/26/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Deregulated Notch signaling is linked to a variety of tumors and it is therefore important to learn more about the frequency and distribution of Notch mutations in a tumor context. METHODS In this report, we use data from the recently developed Cancer Cell Line Encyclopedia to assess the frequency and distribution of Notch mutations in a large panel of cancer cell lines in silico. RESULTS Our results show that the mutation frequency of Notch receptor and ligand genes is at par with that for established oncogenes and higher than for a set of house-keeping genes. Mutations were found across all four Notch receptor genes, but with notable differences between protein domains, mutations were for example more prevalent in the regions encoding the LNR and PEST domains in the Notch intracellular domain. Furthermore, an in silico estimation of functional impact showed that deleterious mutations cluster to the ligand-binding and the intracellular domains of NOTCH1. For most cell line groups, the mutation frequency of Notch genes is higher than in associated primary tumors. CONCLUSIONS Our results shed new light on the spectrum of Notch mutations after in vitro culturing of tumor cells. The higher mutation frequency in tumor cell lines indicates that Notch mutations are associated with a growth advantage in vitro, and thus may be considered to be driver mutations in a tumor cell line context.
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Affiliation(s)
| | - Erik Fredlund
- Department of Oncology and Pathology, Science for Life Laboratory, Karolinska Institute, SE-171 77, Stockholm, Sweden.
| | - Urban Lendahl
- Department of Cell and Molecular Biology, SE-171 77, Stockholm, Sweden.
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975
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Boora GK, Kanwar R, Kulkarni AA, Pleticha J, Ames M, Schroth G, Beutler AS, Banck MS. Exome-level comparison of primary well-differentiated neuroendocrine tumors and their cell lines. Cancer Genet 2015; 208:374-81. [PMID: 26087898 DOI: 10.1016/j.cancergen.2015.04.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 04/01/2015] [Indexed: 12/15/2022]
Abstract
Neuroendocrine cancer cell lines are used to investigate therapeutic targets in neuroendocrine tumors (NET) and have been instrumental in the design of clinical trials targeting the PI3K/AKT/mTOR pathways, VEGF inhibitors, and somatostatin analogues. It remains unknown, however, whether the genomic makeup of NET cell lines reflect that of primary NET since comprehensive unbiased genome sequencing has not been performed on the cell lines. Four bronchopulmonary NET (BP-NET)-NCI-H720, NCI-H727, NCI-H835, and UMC11-and two pancreatic neuroendocrine tumors (panNET)-BON-1 and QGP1-were cultured. DNA was isolated, and exome sequencing was done. GATK and EXCAVATOR were used for bioinformatic analysis. We detected a total of 1,764 nonsynonymous single nucleotide variants at a rate of 8 per Mb in BP-NET and 4.3 per Mb in panNET cell lines, including 52 mutated COSMIC cancer genes in these cell lines, such as TP53, BRCA1, RB1, TSC2, NOTCH1, EP300, GNAS, KDR, STK11, and APC but not ATRX, DAXX, nor MEN1. Our data suggest that mutation rate, the pattern of copy number variations, and the mutational spectra in the BP-NET cell lines are more similar to the changes observed in small cell lung cancer than those found in primary BP-NET. Likewise, mutation rate and pattern including the absence of mutations in ATRX/DAXX, MEN1, and YY1 in the panNET cell lines BON1 and QGP1 suggest that these cell lines do not have the genetic signatures of a primary panNET. These results suggest that results from experiments with BP-NET and panNET cell lines need to be interpreted with caution.
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Affiliation(s)
- Ganesh K Boora
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Rahul Kanwar
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Amit A Kulkarni
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Josef Pleticha
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Matthew Ames
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | | | - Andreas S Beutler
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA; Mayo Clinic Cancer Center, Rochester, MN, USA.
| | - Michaela S Banck
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA; Mayo Clinic Cancer Center, Rochester, MN, USA.
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976
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Angi M, Versluis M, Kalirai H. Culturing Uveal Melanoma Cells. Ocul Oncol Pathol 2015; 1:126-32. [PMID: 27171555 DOI: 10.1159/000370150] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 11/26/2014] [Indexed: 12/24/2022] Open
Abstract
A major challenge in cancer research is the use of appropriate models with which to study a specific biological question. Cell lines have long been used to study cellular processes and the effects of individual molecules because they are easy to use, grow rapidly, produce reproducible results and have a strong track record in research. In uveal melanoma in particular, the absence of animal models that faithfully replicate the behavior of the human disease has propagated the generation and use of numerous cell lines by individual research groups. This in itself, however, can be viewed as a problem due to the lack of standardization when characterizing these entities to determine how closely they reflect the genetic and phenotypic characteristics of this disease. The alternative is to use in vitro primary cultures of cells obtained directly from uveal melanoma patient samples, but this too has its difficulties. Primary cell cultures are difficult to use, hard to obtain and can show considerable heterogeneity. In this article, we review the following: (1) the uveal melanoma cell lines that are currently available, discussing the importance of establishing a bank of those that represent the molecular heterogeneity of uveal melanoma; (2) the methods used to isolate and perform short-term cultures of primary uveal melanoma cells, and (3) the establishment of 3D tissue culture models that bridge the gap between 2D in vitro systems and in vivo models with which to dissect cancer biology and perform therapeutic screens.
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Affiliation(s)
- Martina Angi
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Mieke Versluis
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
| | - Helen Kalirai
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
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977
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Davis SJ, Sheppard KE, Anglesio MS, George J, Traficante N, Fereday S, Intermaggio MP, Menon U, Gentry-Maharaj A, Lubinski J, Gronwald J, Pearce CL, Pike MC, Wu A, Kommoss S, Pfisterer J, du Bois A, Hilpert F, Ramus SJ, Bowtell DDL, Huntsman DG, Pearson RB, Simpson KJ, Campbell IG, Gorringe KL. Enhanced GAB2 Expression Is Associated with Improved Survival in High-Grade Serous Ovarian Cancer and Sensitivity to PI3K Inhibition. Mol Cancer Ther 2015; 14:1495-503. [PMID: 25852062 DOI: 10.1158/1535-7163.mct-15-0039] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 03/19/2015] [Indexed: 11/16/2022]
Abstract
Identification of genomic alterations defining ovarian carcinoma subtypes may aid the stratification of patients to receive targeted therapies. We characterized high-grade serous ovarian carcinoma (HGSC) for the association of amplified and overexpressed genes with clinical outcome using gene expression data from 499 HGSC patients in the Ovarian Tumor Tissue Analysis cohort for 11 copy number amplified genes: ATP13A4, BMP8B, CACNA1C, CCNE1, DYRK1B, GAB2, PAK4, RAD21, TPX2, ZFP36, and URI. The Australian Ovarian Cancer Study and The Cancer Genome Atlas datasets were also used to assess the correlation between gene expression, patient survival, and tumor classification. In a multivariate analysis, high GAB2 expression was associated with improved overall and progression-free survival (P = 0.03 and 0.02), whereas high BMP8B and ATP13A4 were associated with improved progression-free survival (P = 0.004 and P = 0.02). GAB2 overexpression and copy number gain were enriched in the AOCS C4 subgroup. High GAB2 expression correlated with enhanced sensitivity in vitro to the dual PI3K/mTOR inhibitor PF-04691502 and could be used as a genomic marker for identifying patients who will respond to treatments inhibiting PI3K signaling.
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Affiliation(s)
- Sally J Davis
- Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia. Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
| | - Karen E Sheppard
- Oncogenic Signaling and Growth Control Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia. Department of Biochemistry and Molecular Biology, The University of Melbourne, Parkville, Victoria, Australia. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - Michael S Anglesio
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Joshy George
- Cancer Genetics and Genomics Laboratory and Australian Ovarian Cancer Study, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Nadia Traficante
- Cancer Genetics and Genomics Laboratory and Australian Ovarian Cancer Study, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Sian Fereday
- Cancer Genetics and Genomics Laboratory and Australian Ovarian Cancer Study, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Maria P Intermaggio
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Usha Menon
- Gynaecological Cancer Research Centre, Women's Cancer, University College London, Institute for Women's Health, London, United Kingdom
| | - Aleksandra Gentry-Maharaj
- Gynaecological Cancer Research Centre, Women's Cancer, University College London, Institute for Women's Health, London, United Kingdom
| | - Jan Lubinski
- Department of Genetics and Pathology, International Hereditary Cancer Center, Pomeranian Medical University, Szczecin, Poland
| | - Jacek Gronwald
- Department of Genetics and Pathology, International Hereditary Cancer Center, Pomeranian Medical University, Szczecin, Poland
| | | | - Malcolm C Pike
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Anna Wu
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Stefan Kommoss
- Department of Gynecology and Obstetrics, Tuebingen University, Tuebingen, Germany
| | - Jacobus Pfisterer
- Department of Gynecology and Obstetrics, Kiel University, Kiel, Germany
| | - Andreas du Bois
- Department of Gynecology and Gynecologic Oncology, Dr. Horst Schmidt Klinik (HSK), Essen, Germany
| | - Felix Hilpert
- University Hospital Schleswig-Holstein, Kiel, Germany
| | - Susan J Ramus
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - David D L Bowtell
- Cancer Genetics and Genomics Laboratory and Australian Ovarian Cancer Study, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - David G Huntsman
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Richard B Pearson
- Oncogenic Signaling and Growth Control Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia. Department of Biochemistry and Molecular Biology, The University of Melbourne, Parkville, Victoria, Australia. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - Kaylene J Simpson
- Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia. Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Ian G Campbell
- Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia. Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - Kylie L Gorringe
- Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia. Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia.
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978
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Milagre CS, Gopinathan G, Everitt G, Thompson RG, Kulbe H, Zhong H, Hollingsworth RE, Grose R, Bowtell DDL, Hochhauser D, Balkwill FR. Adaptive Upregulation of EGFR Limits Attenuation of Tumor Growth by Neutralizing IL6 Antibodies, with Implications for Combined Therapy in Ovarian Cancer. Cancer Res 2015; 75:1255-64. [PMID: 25670170 PMCID: PMC4384986 DOI: 10.1158/0008-5472.can-14-1801] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 01/16/2015] [Indexed: 01/05/2023]
Abstract
Excess production of the proinflammatory IL6 has both local and systemic tumor-promoting activity in many cancers, including ovarian cancer. However, treatment of advanced ovarian cancer patients with a neutralizing IL6 antibody yielded little efficacy in a previous phase II clinical trial. Here, we report results that may explain this outcome, based on the finding that neutralizing antibodies to IL6 and STAT3 inhibition are sufficient to upregulate the EGFR pathway in high-grade serous and other ovarian cancer cells. Cell treatment with the EGFR inhibitor gefitinib abolished upregulation of the EGFR pathway. Combining neutralizing IL6 antibodies and gefitinib inhibited malignant cell growth in 2D and 3D culture. We found that ErbB-1 was localized predominantly in the nucleus of ovarian cancer cells examined, contrasting with plasma membrane localization in lung cancer cells. Treatment with anti-IL6, gefitinib, or their combination all led to partial restoration of ErbB-1 on the plasma membrane. In vivo experiments confirmed the effects of IL6 inhibition on the EGFR pathway and the enhanced activity of a combination of anti-IL6 antibodies and gefitinib on malignant cell growth. Taken together, our results offer a preclinical rationale to combine anti-IL6 and gefitinib to treat patients with advanced stage ovarian cancer.
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Affiliation(s)
- Carla S Milagre
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Ganga Gopinathan
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Gemma Everitt
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Richard G Thompson
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Hagen Kulbe
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Haihong Zhong
- MedImmune, One MedImmune Way, Gaithersburg, Maryland
| | | | - Richard Grose
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - David D L Bowtell
- Cancer Genomics and Genetics Program, Peter MacCallum Cancer Centre, Research Division, Peter MacCallum Cancer Centre, Melbourne, Australia
| | | | - Frances R Balkwill
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom.
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979
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Li J, Zheng S, Chen B, Butte AJ, Swamidass SJ, Lu Z. A survey of current trends in computational drug repositioning. Brief Bioinform 2015; 17:2-12. [PMID: 25832646 DOI: 10.1093/bib/bbv020] [Citation(s) in RCA: 348] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Indexed: 12/26/2022] Open
Abstract
Computational drug repositioning or repurposing is a promising and efficient tool for discovering new uses from existing drugs and holds the great potential for precision medicine in the age of big data. The explosive growth of large-scale genomic and phenotypic data, as well as data of small molecular compounds with granted regulatory approval, is enabling new developments for computational repositioning. To achieve the shortest path toward new drug indications, advanced data processing and analysis strategies are critical for making sense of these heterogeneous molecular measurements. In this review, we show recent advancements in the critical areas of computational drug repositioning from multiple aspects. First, we summarize available data sources and the corresponding computational repositioning strategies. Second, we characterize the commonly used computational techniques. Third, we discuss validation strategies for repositioning studies, including both computational and experimental methods. Finally, we highlight potential opportunities and use-cases, including a few target areas such as cancers. We conclude with a brief discussion of the remaining challenges in computational drug repositioning.
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980
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Kim MK, James J, Annunziata CM. Topotecan synergizes with CHEK1 (CHK1) inhibitor to induce apoptosis in ovarian cancer cells. BMC Cancer 2015; 15:196. [PMID: 25884494 PMCID: PMC4379550 DOI: 10.1186/s12885-015-1231-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 03/19/2015] [Indexed: 12/29/2022] Open
Abstract
Background Topotecan (TPT) is a therapeutic option for women with platinum-resistant or -refractory ovarian cancer. However, the dose-limiting toxicity of TPT is myelosuppression. This led us to seek a combination treatment to augment TPT anti-cancer activity in a cancer-targeted manner. Ovarian serous cancers, a major subtype, show dysregulated DNA repair pathway and often display a high level of CHEK1 (CHK1), a cell cycle regulator and DNA damage sensor. CHEK1 inhibitors are a novel approach to treatment, and have been used as single agents or in combination chemotherapy in many cancers. Methods We evaluated the cellular effects of TPT in a panel of high grade serous (HGS) and non-HGS ovarian cancer cells. We then determined IC50s of TPT in the absence and presence of CHEK1 inhibitor, PF477736. Synergism between TPT and PF477736 was calculated based on cellular viability assays. Cytotoxic effect of the combined treatment was compared with apoptotic activities by Caspase3/7 activity assay and Western blotting of cleaved-PARP1 and γH2AX. Results Non-HGS ovarian cancer cells were generally more sensitive to TPT treatment compared to HGS ovarian cancer cells. When combined with CHEK1 inhibitor, TPT potently and synergistically inhibited the proliferation of HGS ovarian cancer cells. This dramatic synergism in cellular toxicity was consistent with increases in markers of apoptosis. Conclusions Our findings suggest that the addition of CHEK1 inhibitor increases the response of ovarian cancer cells to TPT. Furthermore, reduced dosages of both drugs achieved maximal cytotoxic effects by combining TPT with CHEK1 inhibitor. This strategy would potentially minimize side effects of the drugs for extended clinical benefit. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1231-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marianne K Kim
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, 20892, USA.
| | - Jana James
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, 20892, USA.
| | - Christina M Annunziata
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, 20892, USA.
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981
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Bateman NW, Jaworski E, Ao W, Wang G, Litzi T, Dubil E, Marcus C, Conrads KA, Teng PN, Hood BL, Phippen NT, Vasicek LA, McGuire WP, Paz K, Sidransky D, Hamilton CA, Maxwell GL, Darcy KM, Conrads TP. Elevated AKAP12 in paclitaxel-resistant serous ovarian cancer cells is prognostic and predictive of poor survival in patients. J Proteome Res 2015; 14:1900-10. [PMID: 25748058 DOI: 10.1021/pr5012894] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A majority of high-grade (HG) serous ovarian cancer (SOC) patients develop resistant disease despite high initial response rates to platinum/paclitaxel-based chemotherapy. We identified shed/secreted proteins in preclinical models of paclitaxel-resistant human HGSOC models and correlated these candidate proteins with patient outcomes using public data from HGSOC patients. Proteomic analyses of a HGSOC cell line secretome was compared to those from a syngeneic paclitaxel-resistant variant and from a line established from an intrinsically chemorefractory HGSOC patient. Associations between the identified candidate proteins and patient outcome were assessed in a discovery cohort of 545 patients and two validation cohorts totaling 795 independent SOC patients. Among the 81 differentially abundant proteins identified (q < 0.05) from paclitaxel-sensitive vs -resistant HGSOC cell secretomes, AKAP12 was verified to be elevated in all models of paclitaxel-resistant HGSOC. Furthermore, elevated AKAP12 transcript expression was associated with worse progression-free and overall survival. Associations with outcome were observed in three independent cohorts and remained significant after adjusted multivariate modeling. We further provide evidence to support that differential gene methylation status is associated with elevated expression of AKAP12 in taxol-resistant ovarian cancer cells and ovarian cancer patient subsets. Elevated expression and shedding/secretion of AKAP12 is characteristic of paclitaxel-resistant HGSOC cells, and elevated AKAP12 transcript expression is a poor prognostic and predictive marker for progression-free and overall survival in SOC patients.
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Affiliation(s)
- Nicholas W Bateman
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Elizabeth Jaworski
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Wei Ao
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Guisong Wang
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Tracy Litzi
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Elizabeth Dubil
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States.,‡Gynecologic Oncology Service, Department of Obstetrics and Gynecology, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, Maryland 20814, United States
| | - Charlotte Marcus
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States.,‡Gynecologic Oncology Service, Department of Obstetrics and Gynecology, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, Maryland 20814, United States
| | - Kelly A Conrads
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Pang-ning Teng
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Brian L Hood
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Neil T Phippen
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States.,‡Gynecologic Oncology Service, Department of Obstetrics and Gynecology, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, Maryland 20814, United States
| | - Lisa A Vasicek
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - William P McGuire
- §Massey Cancer Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Keren Paz
- ∥Champions Oncology, Inc., 855 North Wolfe Street, Suite 619, Baltimore, Maryland 21205, United States
| | - David Sidransky
- ⊥Otolaryngology-Head and Neck Surgery and Oncology, Johns Hopkins University, 1550 Orleans Street, Baltimore, Maryland 21287, United States
| | - Chad A Hamilton
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States.,‡Gynecologic Oncology Service, Department of Obstetrics and Gynecology, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, Maryland 20814, United States
| | - G Larry Maxwell
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States.,#Department of Obstetrics and Gynecology, Inova Fairfax Hospital, 3300 Gallows Road, Falls Church, Virginia 22042, United States
| | - Kathleen M Darcy
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
| | - Thomas P Conrads
- †Women's Health Integrated Research Center at Inova Health System, Gynecologic Cancer Center of Excellence, 3289 Woodburn Road, Annandale, Virginia 22003, United States
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982
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Gambaro K, Quinn MCJ, Cáceres-Gorriti KY, Shapiro RS, Provencher D, Rahimi K, Mes-Masson AM, Tonin PN. Low levels of IGFBP7 expression in high-grade serous ovarian carcinoma is associated with patient outcome. BMC Cancer 2015; 15:135. [PMID: 25886299 PMCID: PMC4381406 DOI: 10.1186/s12885-015-1138-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 02/26/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Insulin-like growth factor binding protein 7 (IGFBP7) has been suggested to act as a tumour suppressor gene in various human cancers, yet its role in epithelial ovarian cancer (EOC) has not yet been investigated. We previously observed that IGFBP7 was one of several genes found significantly upregulated in an EOC cell line model rendered non-tumourigenic as consequence of genetic manipulation. The aim of the present study was to investigate the role of IGFBP7 in high-grade serous ovarian carcinomas (HGSC), the most common type of EOC. METHODS We analysed IGFBP7 gene expression in 11 normal ovarian surface epithelial cells (NOSE), 79 high-grade serous ovarian carcinomas (HGSC), and seven EOC cell lines using a custom gene expression array platform. IGFBP7 mRNA expression profiles were also extracted from publicly available databases. Protein expression was assessed by immunohistochemistry of 175 HGSC and 10 normal fallopian tube samples using tissue microarray and related to disease outcome. We used EOC cells to investigate possible mechanisms of gene inactivation and describe various in vitro growth effects of exposing EOC cell lines to human recombinant IGFBP7 protein and conditioned media. RESULTS All HGSCs exhibited IGFBP7 expression levels that were significantly (p = 0.001) lower than the mean of the expression value of NOSE samples and that of a whole ovary sample. IGFBP7 gene and protein expression were lower in tumourigenic EOC cell lines relative to a non-tumourigenic EOC cell line. None of the EOC cell lines harboured a somatic mutation in IGFBP7, although loss of heterozygosity (LOH) of the IGFBP7 locus and epigenetic methylation silencing of the IGFBP7 promoter was observed in two of the cell lines exhibiting loss of gene/protein expression. In vitro functional assays revealed an alteration of the EOC cell migration capacity. Protein expression analysis of HGSC samples revealed that the large majority of tumour cores (72.6%) showed low or absence of IGFBP7 staining and revealed a significant correlation between IGFBP7 protein expression and a prolonged overall survival (p = 0.044). CONCLUSION The low levels of IGFPB7 in HGSC relative to normal tissues, and association with survival are consistent with a purported role in tumour suppressor pathways.
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Affiliation(s)
- Karen Gambaro
- Department of Human Genetics, McGill University, Montreal, H3A 1B1, Canada. .,Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montreal, H2X 0B9, Canada.
| | - Michael C J Quinn
- Department of Human Genetics, McGill University, Montreal, H3A 1B1, Canada. .,Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montreal, H2X 0B9, Canada.
| | - Katia Y Cáceres-Gorriti
- Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montreal, H2X 0B9, Canada.
| | - Rebecca S Shapiro
- Department of Human Genetics, McGill University, Montreal, H3A 1B1, Canada.
| | - Diane Provencher
- Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montreal, H2X 0B9, Canada. .,Department of Obstetric-Gynecology, Université de Montréal, Montreal, H2L 4M1, Canada.
| | - Kurosh Rahimi
- Department of Pathology, Université de Montréal, Montreal, H3C 3J7, Canada.
| | - Anne-Marie Mes-Masson
- Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montreal, H2X 0B9, Canada. .,Department of Medicine, Université de Montréal, Montreal, H3C 3J7, Canada.
| | - Patricia N Tonin
- Department of Human Genetics, McGill University, Montreal, H3A 1B1, Canada. .,The Research Institute of the McGill University Health Centre, Montreal, H4A 3J1, Canada. .,Department of Medicine, McGill University, Montreal, H3G 1A4, Canada. .,Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Site Glen Pavillion Block E, Cancer Research Program E026217 (cubicle E), Montreal, Quebec, H4A 3J1, Canada.
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983
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Lodhia KA, Hadley AM, Haluska P, Scott CL. Prioritizing therapeutic targets using patient-derived xenograft models. Biochim Biophys Acta Rev Cancer 2015; 1855:223-34. [PMID: 25783201 DOI: 10.1016/j.bbcan.2015.03.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 02/12/2015] [Accepted: 03/09/2015] [Indexed: 01/03/2023]
Abstract
Effective systemic treatment of cancer relies on the delivery of agents with optimal therapeutic potential. The molecular age of medicine has provided genomic tools that can identify a large number of potential therapeutic targets in individual patients, heralding the promise of personalized treatment. However, determining which potential targets actually drive tumor growth and should be prioritized for therapy is challenging. Indeed, reliable molecular matches of target and therapeutic agent have been stringently validated in the clinic for only a small number of targets. Patient-derived xenografts (PDXs) are tumor models developed in immunocompromised mice using tumor procured directly from the patient. As patient surrogates, PDX models represent a powerful tool for addressing individualized therapy. Challenges include humanizing the immune system of PDX models and ensuring high quality molecular annotation, in order to maximize insights for the clinic. Importantly, PDX can be sampled repeatedly and in parallel, to reveal clonal evolution, which may predict mechanisms of drug resistance and inform therapeutic strategy design.
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Affiliation(s)
- K A Lodhia
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - A M Hadley
- Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - P Haluska
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - C L Scott
- Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia.
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984
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Luo LY, Kim E, Cheung HW, Weir BA, Dunn GP, Shen RR, Hahn WC. The Tyrosine Kinase Adaptor Protein FRS2 Is Oncogenic and Amplified in High-Grade Serous Ovarian Cancer. Mol Cancer Res 2015; 13:502-9. [PMID: 25368431 PMCID: PMC4369154 DOI: 10.1158/1541-7786.mcr-14-0407] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
UNLABELLED High-grade serous ovarian cancers (HGSOC) are characterized by widespread recurrent regions of copy-number gain and loss. Here, we interrogated 50 genes that are recurrently amplified in HGSOC and essential for cancer proliferation and survival in ovarian cancer cell lines. FRS2 is one of the 50 genes located on chromosomal region 12q15 that is focally amplified in 12.5% of HGSOC. We found that FRS2-amplified cancer cell lines are dependent on FRS2 expression, and that FRS2 overexpression in immortalized human cell lines conferred the ability to grow in an anchorage-independent manner and as tumors in immunodeficient mice. FRS2, an adaptor protein in the FGFR pathway, induces downstream activation of the Ras-MAPK pathway. These observations identify FRS2 as an oncogene in a subset of HGSOC that harbor FRS2 amplifications. IMPLICATIONS These studies identify FRS2 as an amplified oncogene in a subset of HGSOC. FRS2 expression is essential to ovarian cancer cells that harbor 12q15 amplification.
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Affiliation(s)
- Leo Y Luo
- Health Sciences and Technology Program, Harvard Medical School, Boston, Massachusetts. Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Eejung Kim
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Hiu Wing Cheung
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Barbara A Weir
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Gavin P Dunn
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Neurological Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Rhine R Shen
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. Astellas Pharma U.S. Inc., Santa Monica, California
| | - William C Hahn
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.
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985
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Mehta M, Khan A, Danish S, Haffty BG, Sabaawy HE. Radiosensitization of Primary Human Glioblastoma Stem-like Cells with Low-Dose AKT Inhibition. Mol Cancer Ther 2015; 14:1171-80. [PMID: 25695954 DOI: 10.1158/1535-7163.mct-14-0708] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 02/11/2015] [Indexed: 12/22/2022]
Abstract
Glioblastoma (GBM) is the most frequent and lethal brain cancer. The lack of early detection methods, the presence of rapidly growing tumor cells, and the high levels of recurrence due to chemo- and radioresistance make this cancer an extremely difficult disease to treat. Emerging studies have focused on inhibiting AKT activation; here, we demonstrate that in primary GBM tumor samples, full-dose inhibition of AKT activity leads to differential responses among samples in the context of cell death and self-renewal, reinforcing the notion that GBM is a heterogeneous disease. In contrast, low-dose AKT inhibition when combined with fractionation of radiation doses leads to a significant apoptosis-mediated cell death of primary patient-derived GBM cells. Therefore, low-dose-targeted therapies might be better for radiosensitization of primary GBM cells and further allow for reducing the clinical toxicities often associated with targeting the AKT/PI3K/mTOR pathway. This work emphasizes the discrepancies between cell lines and primary tumors in drug testing, and indicates that there are salient differences between patients, highlighting the need for personalized medicine in treating high-grade glioma.
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Affiliation(s)
- Monal Mehta
- Department of Pharmacology, RBHS-Robert Wood Johnson Medical School, Graduate School of Biomedical Sciences, Rutgers University, New Brunswick, New Jersey
| | - Atif Khan
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, New Jersey. Department of Radiation Oncology, Rutgers University, New Brunswick, New Jersey
| | - Shabbar Danish
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, New Jersey. Department of Neurosurgery, Rutgers University, New Brunswick, New Jersey
| | - Bruce G Haffty
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, New Jersey. Department of Radiation Oncology, Rutgers University, New Brunswick, New Jersey
| | - Hatem E Sabaawy
- Department of Pharmacology, RBHS-Robert Wood Johnson Medical School, Graduate School of Biomedical Sciences, Rutgers University, New Brunswick, New Jersey. Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, New Jersey. Department of Medicine, RBHS-Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey.
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986
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Jaeger S, Duran-Frigola M, Aloy P. Drug sensitivity in cancer cell lines is not tissue-specific. Mol Cancer 2015; 14:40. [PMID: 25881072 PMCID: PMC4359490 DOI: 10.1186/s12943-015-0312-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 01/29/2015] [Indexed: 11/26/2022] Open
Abstract
Background Cancer cell lines have a prominent role in the initial stages of drug discovery, facilitating high-throughput screening of potential drugs. However, their clinical relevance remains controversial. Findings We assess whether drug sensitivity in cancer cell lines is able to discriminate tissue specificity. We find that cancer-specific drugs do not show higher efficacies in cell lines representing the respective tissues. Even when considering distinct cancer subtypes and targeted therapies, most drugs are evenly effective/ineffective throughout all cell lines. Conclusions To get the most out of cell line panels, it will be necessary to look into their molecular characteristics, and integrate them into systems biology frameworks. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0312-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Samira Jaeger
- Joint IRB-BSC-CRG Program in Computational Biology, Institute for Research in Biomedicine (IRB Barcelona), c/Baldiri i Reixac 10-12, Barcelona, 08028, Catalonia, Spain.
| | - Miquel Duran-Frigola
- Joint IRB-BSC-CRG Program in Computational Biology, Institute for Research in Biomedicine (IRB Barcelona), c/Baldiri i Reixac 10-12, Barcelona, 08028, Catalonia, Spain.
| | - Patrick Aloy
- Joint IRB-BSC-CRG Program in Computational Biology, Institute for Research in Biomedicine (IRB Barcelona), c/Baldiri i Reixac 10-12, Barcelona, 08028, Catalonia, Spain. .,Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, Barcelona, 08010, Catalonia, Spain.
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987
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Stefanou DT, Bamias A, Episkopou H, Kyrtopoulos SA, Likka M, Kalampokas T, Photiou S, Gavalas N, Sfikakis PP, Dimopoulos MA, Souliotis VL. Aberrant DNA damage response pathways may predict the outcome of platinum chemotherapy in ovarian cancer. PLoS One 2015; 10:e0117654. [PMID: 25659114 PMCID: PMC4320060 DOI: 10.1371/journal.pone.0117654] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 11/12/2014] [Indexed: 02/06/2023] Open
Abstract
Ovarian carcinoma (OC) is the most lethal gynecological malignancy. Despite the advances in the treatment of OC with combinatorial regimens, including surgery and platinum-based chemotherapy, patients generally exhibit poor prognosis due to high chemotherapy resistance. Herein, we tested the hypothesis that DNA damage response (DDR) pathways are involved in resistance of OC patients to platinum chemotherapy. Selected DDR signals were evaluated in two human ovarian carcinoma cell lines, one sensitive (A2780) and one resistant (A2780/C30) to platinum treatment as well as in peripheral blood mononuclear cells (PBMCs) from OC patients, sensitive (n = 7) or resistant (n = 4) to subsequent chemotherapy. PBMCs from healthy volunteers (n = 9) were studied in parallel. DNA damage was evaluated by immunofluorescence γH2AX staining and comet assay. Higher levels of intrinsic DNA damage were found in A2780 than in A2780/C30 cells. Moreover, the intrinsic DNA damage levels were significantly higher in OC patients relative to healthy volunteers, as well as in platinum-sensitive patients relative to platinum-resistant ones (all P<0.05). Following carboplatin treatment, A2780 cells showed lower DNA repair efficiency than A2780/C30 cells. Also, following carboplatin treatment of PBMCs ex vivo, the DNA repair efficiency was significantly higher in healthy volunteers than in platinum-resistant patients and lowest in platinum-sensitive ones (t1/2 for loss of γH2AX foci: 2.7±0.5h, 8.8±1.9h and 15.4±3.2h, respectively; using comet assay, t1/2 of platinum-induced damage repair: 4.8±1.4h, 12.9±1.9h and 21.4±2.6h, respectively; all P<0.03). Additionally, the carboplatin-induced apoptosis rate was higher in A2780 than in A2780/C30 cells. In PBMCs, apoptosis rates were inversely correlated with DNA repair efficiencies of these cells, being significantly higher in platinum-sensitive than in platinum-resistant patients and lowest in healthy volunteers (all P<0.05). We conclude that perturbations of DNA repair pathways as measured in PBMCs from OC patients correlate with the drug sensitivity of these cells and reflect the individualized response to platinum-based chemotherapy.
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Affiliation(s)
- Dimitra T. Stefanou
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, 11635 Athens, Greece
- Department of Clinical Therapeutics, Athens University Medical School, 11528 Athens, Greece
| | - Aristotelis Bamias
- Department of Clinical Therapeutics, Athens University Medical School, 11528 Athens, Greece
| | - Hara Episkopou
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, 11635 Athens, Greece
- Genetic and Epigenetic Alterations of Genomes, de Duve Institute, Catholic University of Louvain, Brussels, 1200, Belgium
| | - Soterios A. Kyrtopoulos
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Maria Likka
- Department of Clinical Therapeutics, Athens University Medical School, 11528 Athens, Greece
| | - Theodore Kalampokas
- Second Department of Obstetrics & Gynaecology, Athens University Medical School, 11528 Athens, Greece
| | - Stylianos Photiou
- Second Department of Obstetrics & Gynaecology, Athens University Medical School, 11528 Athens, Greece
| | - Nikos Gavalas
- Department of Clinical Therapeutics, Athens University Medical School, 11528 Athens, Greece
| | - Petros P. Sfikakis
- First Department of Propedeutic Medicine, Athens University Medical School, 11527 Athens, Greece
| | - Meletios A. Dimopoulos
- Department of Clinical Therapeutics, Athens University Medical School, 11528 Athens, Greece
| | - Vassilis L. Souliotis
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, 11635 Athens, Greece
- * E-mail:
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988
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Three-dimensional collagen type I matrix up-regulates nuclear isoforms of the microtubule associated protein tau implicated in resistance to paclitaxel therapy in ovarian carcinoma. Int J Mol Sci 2015; 16:3419-33. [PMID: 25658796 PMCID: PMC4346904 DOI: 10.3390/ijms16023419] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/22/2015] [Accepted: 01/27/2015] [Indexed: 01/06/2023] Open
Abstract
Epithelial ovarian carcinoma is the deadliest gynecologic malignancy. One reason underlying treatment failure is resistance to paclitaxel. Expression of the microtubule associated protein tau has recently been proposed as a predictor of response to paclitaxel in ovarian carcinoma patients. Expression of tau was probed using immunohistochemistry in 312 specimens of primary, and 40 specimens of metastatic, ovarian carcinoma. Serous epithelial ovarian carcinoma cell line models were used to determine the expression of tau by Western blot and immunofluorescence staining. Subcellular fractionation and Western blot were employed to examine nuclear and cytoplasmic localization of tau. Gene silencing and clonogenic assays were used to evaluate paclitaxel response. Tau was expressed in 44% of all tested cases. Among the primary serous epithelial ovarian carcinoma cases, 46% were tau-positive. Among the metastatic serous epithelial ovarian carcinomas, 63% were tau-positive. Cell culture experiments demonstrated that tau was expressed in multiple isoforms. Three-dimensional collagen I matrix culture conditions resulted in up-regulation of tau protein. Silencing of tau with specific siRNAs in a combination with three-dimensional culture conditions led to a significant decrease of the clonogenic ability of cells treated with paclitaxel. The data suggest that reduction of tau expression may sensitize ovarian carcinoma to the paclitaxel treatment.
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989
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Abstract
The complexity and heterogeneity of ovarian cancer cases are difficult to reproduce in in vitro studies, which cannot adequately elucidate the molecular events involved in tumor initiation and disease metastasis. It has now become clear that, although the multiple histological subtypes of ovarian cancer are being treated with similar surgical and therapeutic approaches, they are in fact characterized by distinct phenotypes, cell of origin, and underlying key genetic and genomic alterations. Consequently, the development of more personalized treatment methodologies, which are aimed at improving patient care and prognosis, will greatly benefit from a better understanding of the key differences between various subtypes. To accomplish this, animal models of all histotypes need to be generated in order to provide accurate in vivo platforms for research and the testing of targeted treatments and immune therapies. Both genetically engineered mouse models (GEMMs) and xenograft models have the ability to further our understanding of key mechanisms facilitating tumorigenesis, and at the same time offer insight into enhanced imaging and treatment modalities. While genetic models may be better suited to examine oncogenic functions and interactions during tumorigenesis, patient-derived xenografts (PDXs) are likely a superior model to assess drug efficacy, especially in concurrent clinical trials, due to their similarity to the tumors from which they are derived. Genetic and avatar models possess great clinical utility and have both benefits and limitations. Additionally, the laying hen model, which spontaneously develops ovarian tumors, has inherent advantages for the study of epithelial ovarian cancer (EOC) and recent work champions this model especially when assessing chemoprevention strategies. While high-grade ovarian serous tumors are the most prevalent form of EOC, rarer ovarian cancer variants, such as small cell ovarian carcinoma of the hypercalcemic type and transitional cell carcinoma, or non-epithelial tumors, including germ cell tumors, will also benefit from the generation of improved models to advance our understanding of tumorigenic mechanisms and the development of selective therapeutic options.
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Affiliation(s)
- Noor Hasan
- Department of Pathology, Division of Women's and Perinatal Pathology, Eugene Braunwald Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Anders W Ohman
- Department of Pathology, Division of Women's and Perinatal Pathology, Eugene Braunwald Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Daniela M Dinulescu
- Department of Pathology, Division of Women's and Perinatal Pathology, Eugene Braunwald Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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990
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Kinose Y, Sawada K, Makino H, Ogura T, Mizuno T, Suzuki N, Fujikawa T, Morii E, Nakamura K, Sawada I, Toda A, Hashimoto K, Isobe A, Mabuchi S, Ohta T, Itai A, Morishige KI, Kurachi H, Kimura T. IKKβ Regulates VEGF Expression and Is a Potential Therapeutic Target for Ovarian Cancer as an Antiangiogenic Treatment. Mol Cancer Ther 2015; 14:909-19. [DOI: 10.1158/1535-7163.mct-14-0696] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 01/14/2015] [Indexed: 11/16/2022]
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991
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Lim JJ, Yang K, Taylor-Harding B, Wiedemeyer WR, Buckanovich RJ. VEGFR3 inhibition chemosensitizes ovarian cancer stemlike cells through down-regulation of BRCA1 and BRCA2. Neoplasia 2015; 16:343-53.e1-2. [PMID: 24862760 DOI: 10.1016/j.neo.2014.04.003] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 04/02/2014] [Accepted: 04/03/2014] [Indexed: 11/28/2022] Open
Abstract
In ovarian cancer, loss of BRCA gene expression in tumors is associated with improved response to chemotherapy and increased survival. A means to pharmacologically downregulate BRCA gene expression could improve the outcomes of patients with BRCA wild-type tumors. We report that vascular endothelial growth factor receptor 3 (VEGFR3) inhibition in ovarian cancer cells is associated with decreased levels of both BRCA1 and BRCA2. Inhibition of VEGFR3 in ovarian tumor cells was associated with growth arrest. CD133(+) ovarian cancer stemlike cells were preferentially susceptible to VEGFR3-mediated growth inhibition. VEGFR3 inhibition-mediated down-regulation of BRCA gene expression reversed chemotherapy resistance and restored chemosensitivity in resistant cell lines in which a BRCA2 mutation had reverted to wild type. Finally, we demonstrate that tumor-associated macrophages are a primary source of VEGF-C in the tumor microenvironment. Our studies suggest that VEGFR3 inhibition may be a pharmacologic means to downregulate BRCA genes and improve the outcomes of patients with BRCA wild-type tumors.
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Affiliation(s)
- Jaeyoung J Lim
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Kun Yang
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Barbie Taylor-Harding
- Department of Obstetrics and Gynecology, University of California, Los Angeles, CA, USA
| | - W Ruprecht Wiedemeyer
- Department of Obstetrics and Gynecology, University of California, Los Angeles, CA, USA
| | - Ronald J Buckanovich
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA; Division of Gynecology and Oncology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA.
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992
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Ataie-Kachoie P, Pourgholami MH, Bahrami-B F, Badar S, Morris DL. Minocycline attenuates hypoxia-inducible factor-1α expression correlated with modulation of p53 and AKT/mTOR/p70S6K/4E-BP1 pathway in ovarian cancer: in vitro and in vivo studies. Am J Cancer Res 2015; 5:575-588. [PMID: 25973298 PMCID: PMC4396050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/05/2015] [Indexed: 06/04/2023] Open
Abstract
Hypoxia-inducible factor (HIF)-1α is the key cellular survival protein under hypoxia, and is associated with tumor progression and angiogenesis. We have recently shown the inhibitory effects of minocycline on ovarian tumor growth correlated with attenuation of vascular endothelial growth factor (VEGF) and herein report a companion laboratory study to test if these effects were the result of HIF-1α inhibition. In vitro, human ovarian carcinoma cell lines (A2780, OVCAR-3 and SKOV-3) were utilized to examine the effect of minocycline on HIF-1 and its upstream pathway components to elucidate the underlying mechanism of action of minocycline. Mice harboring OVCAR-3 xenografts were treated with minocycline to assess the in vivo efficacy of minocycline in the context of HIF-1. Minocycline negatively regulated HIF-1α protein levels in a concentration-dependent manner and induced its degradation by a mechanism that is independent of prolyl-hydroxylation. The inhibition of HIF-1α was found to be associated with up-regulation of endogenous p53, a tumor suppressor with confirmed role in HIF-1α degradation. Further studies demonstrated that the effect of minocycline was not restricted to proteasomal degradation and that it also caused down-regulation of HIF-1α translation by suppressing the AKT/mTOR/p70S6K/4E-BP1 signaling pathway. Minocycline treatment of mice bearing established ovarian tumors, led to suppression of HIF-1α accompanied by up-regulation of p53 protein levels and inactivation of AKT/mTOR/p70S6K/4E-BP1 pathway. These data reveal the therapeutic potential of minocycline in ovarian cancer as an agent that targets the pro-oncogenic factor HIF-1α through multiple mechanisms.
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Affiliation(s)
| | | | - Farnaz Bahrami-B
- University of New South Wales Department of Surgery, St George and Sutherland Clinical SchoolSydney, Australia
| | - Samina Badar
- University of New South Wales Department of Surgery, St George and Sutherland Clinical SchoolSydney, Australia
| | - David L Morris
- Department of Surgery, St George HospitalSydney, Australia
- University of New South Wales Department of Surgery, St George and Sutherland Clinical SchoolSydney, Australia
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993
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Borley J, Brown R. Epigenetic mechanisms and therapeutic targets of chemotherapy resistance in epithelial ovarian cancer. Ann Med 2015; 47:359-69. [PMID: 26158617 DOI: 10.3109/07853890.2015.1043140] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Epithelial ovarian cancer is the most lethal gynaecological cancer with the majority of patients succumbing to chemotherapy-resistant disease. Unravelling the mechanisms of drug resistance and how it can be prevented or reversed is a pivotal challenge in the treatment of cancer. Epigenetic mechanisms appear to play a crucial role in the development of inherent and acquired resistance in ovarian cancer. Aberrant epigenetic states can be reversed by drug therapy, and thus maintenance of epigenetic change is a potential target to halt or reverse chemotherapy resistance. This review explores the evidence that demonstrates that DNA methylation, histone modification, and microRNAs are associated with inherent and acquired chemotherapy resistance in ovarian cancer and the current challenges associated with this. We also explore current epigenetic therapies used in patients with drug-resistant ovarian cancer and future potential targets.
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Affiliation(s)
- Jane Borley
- a Department of Surgery and Cancer , Imperial College London, Hammersmith Hospital , London W12 0NN , UK
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994
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Krishna A, Biryukov M, Trefois C, Antony PMA, Hussong R, Lin J, Heinäniemi M, Glusman G, Köglsberger S, Boyd O, van den Berg BHJ, Linke D, Huang D, Wang K, Hood L, Tholey A, Schneider R, Galas DJ, Balling R, May P. Systems genomics evaluation of the SH-SY5Y neuroblastoma cell line as a model for Parkinson's disease. BMC Genomics 2014; 15:1154. [PMID: 25528190 PMCID: PMC4367834 DOI: 10.1186/1471-2164-15-1154] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 12/12/2014] [Indexed: 12/20/2022] Open
Abstract
Background The human neuroblastoma cell line, SH-SY5Y, is a commonly used cell line in studies related to neurotoxicity, oxidative stress, and neurodegenerative diseases. Although this cell line is often used as a cellular model for Parkinson’s disease, the relevance of this cellular model in the context of Parkinson’s disease (PD) and other neurodegenerative diseases has not yet been systematically evaluated. Results We have used a systems genomics approach to characterize the SH-SY5Y cell line using whole-genome sequencing to determine the genetic content of the cell line and used transcriptomics and proteomics data to determine molecular correlations. Further, we integrated genomic variants using a network analysis approach to evaluate the suitability of the SH-SY5Y cell line for perturbation experiments in the context of neurodegenerative diseases, including PD. Conclusions The systems genomics approach showed consistency across different biological levels (DNA, RNA and protein concentrations). Most of the genes belonging to the major Parkinson’s disease pathways and modules were intact in the SH-SY5Y genome. Specifically, each analysed gene related to PD has at least one intact copy in SH-SY5Y. The disease-specific network analysis approach ranked the genetic integrity of SH-SY5Y as higher for PD than for Alzheimer’s disease but lower than for Huntington’s disease and Amyotrophic Lateral Sclerosis for loss of function perturbation experiments. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-1154) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Abhimanyu Krishna
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Campus Belval, 7, avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg.
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995
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Engineered microenvironments provide new insights into ovarian and prostate cancer progression and drug responses. Adv Drug Deliv Rev 2014; 79-80:193-213. [PMID: 24969478 DOI: 10.1016/j.addr.2014.06.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 05/30/2014] [Accepted: 06/16/2014] [Indexed: 02/06/2023]
Abstract
Tissue engineering technologies, which have originally been designed to reconstitute damaged tissue structure and function, can mimic not only tissue regeneration processes but also cancer development and progression. Bioengineered approaches allow cell biologists to develop sophisticated experimentally and physiologically relevant cancer models to recapitulate the complexity of the disease seen in patients. Tissue engineering tools enable three-dimensionality based on the design of biomaterials and scaffolds that re-create the geometry, chemistry, function and signalling milieu of the native tumour microenvironment. Three-dimensional (3D) microenvironments, including cell-derived matrices, biomaterial-based cell culture models and integrated co-cultures with engineered stromal components, are powerful tools to study dynamic processes like proteolytic functions associated with cancer progression, metastasis and resistance to therapeutics. In this review, we discuss how biomimetic strategies can reproduce a humanised niche for human cancer cells, such as peritoneal or bone-like microenvironments, addressing specific aspects of ovarian and prostate cancer progression and therapy response.
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996
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Lee JW, Ryu JY, Yoon G, Jeon HK, Cho YJ, Choi JJ, Song SY, Do IG, Lee YY, Kim TJ, Choi CH, Kim BG, Bae DS. Sphingosine kinase 1 as a potential therapeutic target in epithelial ovarian cancer. Int J Cancer 2014; 137:221-9. [PMID: 25429856 DOI: 10.1002/ijc.29362] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 11/21/2014] [Indexed: 01/22/2023]
Abstract
Sphingosine kinase 1 (SK1) is over-expressed in multiple types of human cancer. SK1 has growth-promoting effects and has been proposed as a potential therapeutic target. We investigated the therapeutic effects of SK1 inhibition in epithelial ovarian carcinoma (EOC). SK1 siRNA or inhibitors were tested in EOC cell lines, including A2780, SKOV3ip1, A2780-CP20, SKOV3-TR, ES2 and RMG2. Cells were treated with SK inhibitor or FTY720, and cell proliferation, apoptosis, angiogenesis and invasion were examined by MTT, FACS, ELISA and wound-healing assays, respectively. In vivo experiments were performed to test the effects of FTY720 on tumor growth in orthotopic mouse xenografts of EOC cell lines A2780 or SKOV3ip1 and a patient-derived xenograft (PDX) model of clear cell ovarian carcinoma (CCC). Blocking SK1 with siRNA or inhibitors significantly reduced proliferation, angiogenesis and invasion, and increased apoptosis in chemosensitive (A2780 and SKOV3ip1) and chemoresistant (A2780-CP20, SKOV3-TR, ES2 and RMG2) EOC cells. SK1 inhibitors also decreased the intracellular enzymatic activity of SK1. Furthermore, FTY720 treatment significantly decreased the in vivo tumor weight in xenograft models of established cell lines (A2780 and SKOV3ip1) and a PDX model for CCC compared to control (p < 0.05). These results support therapeutic targeting of SK1 as a potential new strategy for EOC.
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Affiliation(s)
- Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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997
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San Lucas FA, Fowler J, Chang K, Kopetz S, Vilar E, Scheet P. Cancer in silico drug discovery: a systems biology tool for identifying candidate drugs to target specific molecular tumor subtypes. Mol Cancer Ther 2014; 13:3230-40. [PMID: 25349306 PMCID: PMC4341901 DOI: 10.1158/1535-7163.mct-14-0260] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Large-scale cancer datasets such as The Cancer Genome Atlas (TCGA) allow researchers to profile tumors based on a wide range of clinical and molecular characteristics. Subsequently, TCGA-derived gene expression profiles can be analyzed with the Connectivity Map (CMap) to find candidate drugs to target tumors with specific clinical phenotypes or molecular characteristics. This represents a powerful computational approach for candidate drug identification, but due to the complexity of TCGA and technology differences between CMap and TCGA experiments, such analyses are challenging to conduct and reproduce. We present Cancer in silico Drug Discovery (CiDD; scheet.org/software), a computational drug discovery platform that addresses these challenges. CiDD integrates data from TCGA, CMap, and Cancer Cell Line Encyclopedia (CCLE) to perform computational drug discovery experiments, generating hypotheses for the following three general problems: (i) determining whether specific clinical phenotypes or molecular characteristics are associated with unique gene expression signatures; (ii) finding candidate drugs to repress these expression signatures; and (iii) identifying cell lines that resemble the tumors being studied for subsequent in vitro experiments. The primary input to CiDD is a clinical or molecular characteristic. The output is a biologically annotated list of candidate drugs and a list of cell lines for in vitro experimentation. We applied CiDD to identify candidate drugs to treat colorectal cancers harboring mutations in BRAF. CiDD identified EGFR and proteasome inhibitors, while proposing five cell lines for in vitro testing. CiDD facilitates phenotype-driven, systematic drug discovery based on clinical and molecular data from TCGA.
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Affiliation(s)
- F Anthony San Lucas
- The Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas. Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Jerry Fowler
- Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Kyle Chang
- The Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Scott Kopetz
- The Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas. Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Eduardo Vilar
- The Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas. Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas. Department of Clinical Cancer Prevention, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
| | - Paul Scheet
- The Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas. Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
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998
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Sundar SJ, Hsieh JK, Manjila S, Lathia JD, Sloan A. The role of cancer stem cells in glioblastoma. Neurosurg Focus 2014; 37:E6. [DOI: 10.3171/2014.9.focus14494] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recurrence in glioblastoma is nearly universal, and its prognosis remains dismal despite significant advances in treatment over the past decade. Glioblastoma demonstrates considerable intratumoral phenotypic and molecular heterogeneity and contains a population of cancer stem cells that contributes to tumor propagation, maintenance, and treatment resistance. Cancer stem cells are functionally defined by their ability to self-renew and to differentiate, and they constitute the diverse hierarchy of cells composing a tumor. When xenografted into an appropriate host, they are capable of tumorigenesis. Given the critical role of cancer stem cells in the pathogenesis of glioblastoma, research into their molecular and phenotypic characteristics is a therapeutic priority. In this review, the authors discuss the evolution of the cancer stem cell model of tumorigenesis and describe the specific role of cancer stem cells in the pathogenesis of glioblastoma and their molecular and microenvironmental characteristics. They also discuss recent clinical investigations into targeted therapies against cancer stem cells in the treatment of glioblastoma.
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Affiliation(s)
| | - Jason K. Hsieh
- 1Case Western Reserve University School of Medicine
- 2Cleveland Clinic Lerner College of Medicine
| | - Sunil Manjila
- 3Department of Neurological Surgery, University Hospitals Case Medical Center
| | - Justin D. Lathia
- 2Cleveland Clinic Lerner College of Medicine
- 4Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic; and
- 5Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Andrew Sloan
- 1Case Western Reserve University School of Medicine
- 3Department of Neurological Surgery, University Hospitals Case Medical Center
- 5Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
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999
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Leung AWY, Kalra J, Santos ND, Bally MB, Anglesio MS. Harnessing the potential of lipid-based nanomedicines for type-specific ovarian cancer treatments. Nanomedicine (Lond) 2014; 9:501-22. [PMID: 24746193 DOI: 10.2217/nnm.13.220] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Epithelial ovarian cancers are a group of at least five histologically and clinically distinct diseases, yet at this time patients with these different diseases are all treated with the same platinum and taxane-based chemotherapeutic regimen. With increased knowledge of histotype-specific differences that correlate with treatment responses and resistance, novel treatment strategies will be developed for each distinct disease. Type-specific or resistance-driven molecularly targeted agents will provide some specificity over traditional chemotherapies and it is argued here that nanoscaled drug delivery systems, in particular lipid-based formulations, have the potential to improve the delivery and specificity of pathway-specific drugs and broad-spectrum cytotoxic chemotherapeutics. An overview of the current understanding of ovarian cancers and the evolving clinical management of these diseases is provided. This overview is needed as it provides the context for understanding the current role of drug delivery systems in the treatment of ovarian cancer and the need to design formulations for treatment of clinically distinct forms of ovarian cancer.
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Affiliation(s)
- Ada W Y Leung
- Experimental Therapeutics, British Columbia Cancer Agency Cancer Research Centre, Vancouver, BC, Canada
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1000
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Exploiting high-throughput cell line drug screening studies to identify candidate therapeutic agents in head and neck cancer. BMC Pharmacol Toxicol 2014; 15:66. [PMID: 25428177 PMCID: PMC4258049 DOI: 10.1186/2050-6511-15-66] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 11/10/2014] [Indexed: 01/09/2023] Open
Abstract
Background There is an urgent need for better therapeutics in head and neck squamous cell cancer (HNSCC) to improve survival and decrease treatment morbidity. Recent advances in high-throughput drug screening techniques and next-generation sequencing have identified new therapeutic targets in other cancer types, but an HNSCC-specific study has not yet been carried out. We have exploited data from two large-scale cell line projects to clearly describe the mutational and copy number status of HNSCC cell lines and identify candidate drugs with elevated efficacy in HNSCC. Methods The genetic landscape of 42 HNSCC cell lines including mutational and copy number data from studies by Garnett et al., and Barretina et al., were analyzed. Data from Garnett et al. was interrogated for relationships between HNSCC cells versus the entire cell line pool using one- and two-way analyses of variance (ANOVAs). As only seven HNSCC cell lines were tested with drugs by Barretina et al., a similar analysis was not carried out. Results Recurrent mutations in human papillomavirus (HPV)-negative patient tumors were confirmed in HNSCC cell lines, however additional, recurrent, cell line-specific mutations were identified. Four drugs, Bosutinib, Docetaxel, BIBW2992, and Gefitinib, were found via multiple-test corrected ANOVA to have lower IC50 values, suggesting higher drug sensitivity, in HNSCC lines versus non-HNSCC lines. Furthermore, the PI3K inhibitor AZD6482 demonstrated significantly higher activity (as measured by the IC50) in HNSCC cell lines harbouring PIK3CA mutations versus those that did not. Conclusion HNSCC-specific reanalysis of large-scale drug screening studies has identified candidate drugs that may be of therapeutic benefit and provided insights into strategies to target PIK3CA mutant tumors. PIK3CA mutations may represent a predictive biomarker for response to PI3K inhibitors. A large-scale study focused on HNSCC cell lines and including HPV-positive lines is necessary and has the potential to accelerate the development of improved therapeutics for patients suffering with head and neck cancer. This strategy can potentially be used as a template for drug discovery in any cancer type. Electronic supplementary material The online version of this article (doi:10.1186/2050-6511-15-66) contains supplementary material, which is available to authorized users.
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