101
|
Zhang S, Gong Z, Oladimeji PO, Currier DG, Deng Q, Liu M, Chen T, Li Y. A high-throughput screening identifies histone deacetylase inhibitors as therapeutic agents against medulloblastoma. Exp Hematol Oncol 2019; 8:30. [PMID: 31788346 PMCID: PMC6858705 DOI: 10.1186/s40164-019-0153-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/04/2019] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Medulloblastoma is the most frequently occurring malignant brain tumor in children. Current treatment strategies for medulloblastoma include aggressive surgery, cranio-spinal irradiation and adjuvant chemotherapy. Because current treatments can cause severe long-term side effects and are not curative, successful treatment remains a challenge. METHODS In this study, we employed a high-throughput cell viability assay to screen 12,800 compounds and to identify drug candidates with anti-proliferative properties for medulloblastoma cells. We also tested these compounds for attenuating medulloblastoma tumor development using mouse xenografts. RESULTS We identified two histone deacetylase inhibitors (dacinostat and quisinostat) with anti-proliferative properties for medulloblastoma cells. We showed that both compounds induce cytotoxicity, trigger cell apoptosis, and block cell cycle progression at the G2/M phase. In addition, dacinostat and quisinostat attenuated xenograft medulloblastoma growth in mice. CONCLUSIONS Our findings suggest that histone deacetylase inhibitors are potent therapeutic agents against medulloblastoma.
Collapse
Affiliation(s)
- Shanshan Zhang
- Section of Epidemiology & Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX USA
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH USA
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Zhaojian Gong
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH USA
- Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Peter O. Oladimeji
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN USA
| | - Duane G. Currier
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN USA
| | - Qipan Deng
- Section of Epidemiology & Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX USA
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH USA
| | - Ming Liu
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH USA
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
| | - Taosheng Chen
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN USA
| | - Yong Li
- Section of Epidemiology & Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX USA
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH USA
| |
Collapse
|
102
|
Nonviral polymeric nanoparticles for gene therapy in pediatric CNS malignancies. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 23:102115. [PMID: 31655205 DOI: 10.1016/j.nano.2019.102115] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 12/15/2022]
Abstract
Together, medulloblastoma (MB) and atypical teratoid/rhabdoid tumors (AT/RT) represent two of the most prevalent pediatric brain malignancies. Current treatment involves radiation, which has high risks of developmental sequelae for patients under the age of three. New safer and more effective treatment modalities are needed. Cancer gene therapy is a promising alternative, but there are challenges with using viruses in pediatric patients. We developed a library of poly(beta-amino ester) (PBAE) nanoparticles and evaluated their efficacy for plasmid delivery of a suicide gene therapy to pediatric brain cancer models-specifically herpes simplex virus type I thymidine kinase (HSVtk), which results in controlled apoptosis of transfected cells. In vivo, PBAE-HSVtk treated groups had a greater median overall survival in mice implanted with AT/RT (P = 0.0083 vs. control) and MB (P < 0.0001 vs. control). Our data provide proof of principle for using biodegradable PBAE nanoparticles as a safe and effective nanomedicine for treating pediatric CNS malignancies.
Collapse
|
103
|
NPI-0052 and γ-radiation induce a synergistic apoptotic effect in medulloblastoma. Cell Death Dis 2019; 10:785. [PMID: 31619667 PMCID: PMC6795856 DOI: 10.1038/s41419-019-2026-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/30/2019] [Accepted: 09/27/2019] [Indexed: 12/25/2022]
Abstract
Medulloblastoma (MB) is the most common malignant solid paediatric brain tumour. The standard treatment for MB is surgical resection of the tumour, radiation and chemotherapy. This therapy is associated with high morbidity and adverse side effects. Hence, more targeted and less toxic therapies are vitally needed to improve the quality of life of survivors. NPI-0052 is a novel proteasome inhibitor that irreversibly binds the 20S proteasome subunit. This compound has anti-tumour activity in metastatic solid tumours, glioblastoma and multiple myeloma with a good safety profile. Importantly, NPI-0052 has a lipophilic structure and can penetrate the blood–brain barrier, making it a suitable treatment for brain tumours. In the present study, we performed an in silico gene expression analysis to evaluate the proteasome subunit expression in MB. To evaluate the anticancer activity of NPI-0052, we used a range of MB patient-derived MB cells and cell lines. The synergistic cell death of NPI-0052 with γ-radiation was evaluated in tumour organoids derived from patient-derived MB cells. We show that high expression of proteasome subunits is a poor prognostic factor for MB patients. Also, our preclinical work demonstrated that NPI-0052 can inhibit proteasome activity and activate apoptosis in MB cells. Moreover, we observe that NPI-0052 has a synergistic apoptotic effect with γ-radiation, a component of the current MB therapy. Here, we present compelling preclinical evidence that NPI-0052 can be used as an adjuvant treatment for p53-family-expressing MB tumours.
Collapse
|
104
|
Huang L, Garrett Injac S, Cui K, Braun F, Lin Q, Du Y, Zhang H, Kogiso M, Lindsay H, Zhao S, Baxter P, Adekunle A, Man TK, Zhao H, Li XN, Lau CC, Wong STC. Systems biology-based drug repositioning identifies digoxin as a potential therapy for groups 3 and 4 medulloblastoma. Sci Transl Med 2019; 10:10/464/eaat0150. [PMID: 30355798 DOI: 10.1126/scitranslmed.aat0150] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 06/26/2018] [Accepted: 10/01/2018] [Indexed: 01/01/2023]
Abstract
Medulloblastoma (MB) is the most common malignant brain tumor of childhood. Although outcomes have improved in recent decades, new treatments are still needed to improve survival and reduce treatment-related complications. The MB subtypes groups 3 and 4 represent a particular challenge due to their intragroup heterogeneity, which limits the options for "rational" targeted therapies. Here, we report a systems biology approach to drug repositioning that integrates a nonparametric, bootstrapping-based simulated annealing algorithm and a 3D drug functional network to characterize dysregulated driver signaling networks, thereby identifying potential drug candidates. From more than 1300 drug candidates studied, we identified five members of the cardiac glycoside family as potentially inhibiting the growth of groups 3 and 4 MB and subsequently confirmed this in vitro. Systemic in vivo treatment of orthotopic patient-derived xenograft (PDX) models of groups 3 and 4 MB with digoxin, a member of the cardiac glycoside family approved for the treatment of heart failure, prolonged animal survival at plasma concentrations known to be tolerated in humans. These results demonstrate the power of a systematic drug repositioning method in identifying a potential treatment for MB. Our strategy could potentially be used to accelerate the repositioning of treatments for other human cancers that lack clearly defined rational targets.
Collapse
Affiliation(s)
- Lei Huang
- Department of Systems Medicine and Bioengineering, Houston Methodist Research Institute and Cancer Center, Weill Cornell Medicine, Houston, TX 77030, USA
| | - Sarah Garrett Injac
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA.,Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Kemi Cui
- Department of Systems Medicine and Bioengineering, Houston Methodist Research Institute and Cancer Center, Weill Cornell Medicine, Houston, TX 77030, USA
| | - Frank Braun
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA
| | - Qi Lin
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yuchen Du
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA
| | - Huiyuan Zhang
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mari Kogiso
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA
| | - Holly Lindsay
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA.,Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sibo Zhao
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA.,Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Patricia Baxter
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA.,Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Adesina Adekunle
- Department of Pathology, Texas Children's Hospital, Houston, TX 77030, USA
| | - Tsz-Kwong Man
- Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hong Zhao
- Department of Systems Medicine and Bioengineering, Houston Methodist Research Institute and Cancer Center, Weill Cornell Medicine, Houston, TX 77030, USA
| | - Xiao-Nan Li
- Preclinical Neuro-Oncology Research Program, Baylor College of Medicine, Houston, TX 77030, USA. .,Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ching C Lau
- Texas Children's Cancer and Hematology Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Stephen T C Wong
- Department of Systems Medicine and Bioengineering, Houston Methodist Research Institute and Cancer Center, Weill Cornell Medicine, Houston, TX 77030, USA.
| |
Collapse
|
105
|
A Smo/Gli Multitarget Hedgehog Pathway Inhibitor Impairs Tumor Growth. Cancers (Basel) 2019; 11:cancers11101518. [PMID: 31601026 PMCID: PMC6826940 DOI: 10.3390/cancers11101518] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/29/2019] [Accepted: 10/02/2019] [Indexed: 12/17/2022] Open
Abstract
Pharmacological Hedgehog (Hh) pathway inhibition has emerged as a valuable anticancer strategy. A number of small molecules able to block the pathway at the upstream receptor Smoothened (Smo) or the downstream effector glioma-associated oncogene 1 (Gli1) has been designed and developed. In a recent study, we exploited the high versatility of the natural isoflavone scaffold for targeting the Hh signaling pathway at multiple levels showing that the simultaneous targeting of Smo and Gli1 provided synergistic Hh pathway inhibition stronger than single administration. This approach seems to effectively overcome the drug resistance, particularly at the level of Smo. Here, we combined the pharmacophores targeting Smo and Gli1 into a single and individual isoflavone, compound 22, which inhibits the Hh pathway at both upstream and downstream level. We demonstrate that this multitarget agent suppresses medulloblastoma growth in vitro and in vivo through antagonism of Smo and Gli1, which is a novel mechanism of action in Hh inhibition.
Collapse
|
106
|
Sood D, Tang-Schomer M, Pouli D, Mizzoni C, Raia N, Tai A, Arkun K, Wu J, Black LD, Scheffler B, Georgakoudi I, Steindler DA, Kaplan DL. 3D extracellular matrix microenvironment in bioengineered tissue models of primary pediatric and adult brain tumors. Nat Commun 2019; 10:4529. [PMID: 31586101 PMCID: PMC6778192 DOI: 10.1038/s41467-019-12420-1] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 08/27/2019] [Indexed: 12/15/2022] Open
Abstract
Dynamic alterations in the unique brain extracellular matrix (ECM) are involved in malignant brain tumors. Yet studies of brain ECM roles in tumor cell behavior have been difficult due to lack of access to the human brain. We present a tunable 3D bioengineered brain tissue platform by integrating microenvironmental cues of native brain-derived ECMs and live imaging to systematically evaluate patient-derived brain tumor responses. Using pediatric ependymoma and adult glioblastoma as examples, the 3D brain ECM-containing microenvironment with a balance of cell-cell and cell-matrix interactions supports distinctive phenotypes associated with tumor type-specific and ECM-dependent patterns in the tumor cells' transcriptomic and release profiles. Label-free metabolic imaging of the composite model structure identifies metabolically distinct sub-populations within a tumor type and captures extracellular lipid-containing droplets with potential implications in drug response. The versatile bioengineered 3D tumor tissue system sets the stage for mechanistic studies deciphering microenvironmental role in brain tumor progression.
Collapse
Affiliation(s)
- Disha Sood
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Min Tang-Schomer
- Jackson Laboratory for Genomic Medicine, Farmington, CT, 06032, USA.,Connecticut Children's Medical Center, Harford, CT, 06106, USA
| | - Dimitra Pouli
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.,Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02114, USA
| | - Craig Mizzoni
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Nicole Raia
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Albert Tai
- Genomics Core, Tufts University School of Medicine, Boston, MA, 02111, USA
| | - Knarik Arkun
- Department of Pathology and Laboratory Medicine, Tufts Medical Center, Boston, MA, 02111, USA
| | - Julian Wu
- Department of Neurosurgery, Tufts Medical Center, Boston, MA, 02111, USA
| | - Lauren D Black
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Bjorn Scheffler
- Department of Neuroscience, University of Florida, McKnight Brain Institute, Gainesville, FL, 32610, USA.,DKFZ-Division of Translational Oncology/ Neurooncology, German Cancer Consortium (DKTK), Heidelberg & University Hospital Essen, Essen, Germany
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Dennis A Steindler
- Department of Neuroscience, University of Florida, McKnight Brain Institute, Gainesville, FL, 32610, USA.,Neuroscience and Aging Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, 02111, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.
| |
Collapse
|
107
|
Bonfim-Silva R, Salomão KB, Pimentel TVCDA, Menezes CCBDO, Palma PVB, Fontes AM. Biological characterization of the UW402, UW473, ONS-76 and DAOY pediatric medulloblastoma cell lines. Cytotechnology 2019; 71:893-903. [PMID: 31346954 PMCID: PMC6787134 DOI: 10.1007/s10616-019-00332-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 07/19/2019] [Indexed: 12/15/2022] Open
Abstract
Medulloblastoma (MB) is the most common malignant brain tumor in children. Recent advances in molecular technologies allowed to classify MB in 4 major molecular subgroups: WNT, SHH, Group 3 and Group 4. In cancer research, cancer cell lines are important for examining and manipulating molecular and cellular process. However, it is important to know the characteristics of each cancer cell line prior to use, because there are some differences among them, even if they originate from the same cancer type. This study aimed to evaluate the similarities and differences among four human medulloblastoma cell lines, UW402, UW473, DAOY and ONS-76. The medulloblastoma cell lines were analyzed for (1) cell morphology, (2) immunophenotyping by flow cytometry for some specifics surface proteins, (3) expression level of adhesion molecules by RT-qPCR, (4) proliferative potential, (5) cell migration, and (6) in vivo tumorigenic potential. It was observed a relationship between cell growth and CDH1 (E-chaderin) adhesion molecule expression and all MB cell lines showed higher levels of CDH2 (N-chaderin) when compared to other adhesion molecule. ONS-76 showed higher gene expression of CDH5 (VE-chaderin) and higher percentage of CD144/VE-chaderin positive cells when compared to other MB cell lines. All MB cell lines showed low percentage of CD34, CD45, CD31, CD133 positive cells and high percentage of CD44, CD105, CD106 and CD29 positive cells. The DAOY cell line showed the highest migration potential, the ONS-76 cell line showed the highest proliferative potential and only DAOY and ONS-76 cell lines showed tumorigenic potential in vivo. MB cell lines showed functional and molecular differences among them, which it should be considered by the researchers in choosing the most suitable cellular model according to the study proposal.
Collapse
Affiliation(s)
- Ricardo Bonfim-Silva
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900 Monte Alegre, Ribeirão Preto, São Paulo, ZIP code: 14049-900, Brazil.
| | - Karina Bezerra Salomão
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900 Monte Alegre, Ribeirão Preto, São Paulo, ZIP code: 14049-900, Brazil
| | - Thais Valéria Costa de Andrade Pimentel
- Department of Medical Clinic, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900 Monte Alegre, Ribeirão Preto, São Paulo, ZIP code: 14049-900, Brazil
| | - Camila Cristina Branquinho de Oliveira Menezes
- Ribeirão Preto Blood Center, Clinics Hospital of the Ribeirão Preto Medical School, University of São Paulo, Av. Tenente Catão Roxo, 2501 Monte Alegre, Ribeirão Preto, São Paulo, ZIP code: 14051-140, Brazil
| | - Patrícia Vianna Bonini Palma
- Ribeirão Preto Blood Center, Clinics Hospital of the Ribeirão Preto Medical School, University of São Paulo, Av. Tenente Catão Roxo, 2501 Monte Alegre, Ribeirão Preto, São Paulo, ZIP code: 14051-140, Brazil
| | - Aparecida Maria Fontes
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900 Monte Alegre, Ribeirão Preto, São Paulo, ZIP code: 14049-900, Brazil
| |
Collapse
|
108
|
Pathania AS, Ren X, Mahdi MY, Shackleford GM, Erdreich-Epstein A. GRK2 promotes growth of medulloblastoma cells and protects them from chemotherapy-induced apoptosis. Sci Rep 2019; 9:13902. [PMID: 31554835 PMCID: PMC6761358 DOI: 10.1038/s41598-019-50157-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/03/2019] [Indexed: 02/07/2023] Open
Abstract
G-protein coupled receptor kinase 2 (GRK2; ADRBK1, BARK1) is most known as a regulator of G-protein coupled receptors. However, GRK2 also has other functions. Medulloblastomas are the most common malignant brain cancers in children. GRK2 has not been implicated in medulloblastoma biology. Here we report that GRK2 knockdown slowed cell growth, diminished proliferation, and enhanced cisplatin- and etoposide-induced apoptosis in medulloblastoma cell lines UW228-2 and Daoy. Reciprocally, GRK2 overexpression attenuated apoptosis induced by these chemotherapy drugs. Cisplatin and etoposide increased phosphorylation of AKT (S473) and GRK2 knockdown mitigated this increase. Cisplatin and etoposide attenuated ERK phosphorylation, but GRK2 knockdown did not alter this effect. Wildtype GRK2 reversed the increase in cisplatin- and etoposide-induced apoptosis caused by GRK2 knockdown. GRK2-K220R (kinase dead) and GRK2-S670A (unphosphorylated, constitutively active) conferred protection from cisplatin that was similar to wildtype GRK2, suggesting that this protection may be mediated though a kinase-independent activity of GRK2. These data demonstrate that GRK2 contributes to proliferation and survival of these medulloblastoma cell lines and to their protection from cisplatin- and etoposide-induced apoptosis.
Collapse
Affiliation(s)
- Anup S Pathania
- Department of Pediatrics, Division of Hematology, Oncology and Blood and Marrow Transplantation, The Saban Research Institute at Children's Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Xiuhai Ren
- Department of Pediatrics, Division of Hematology, Oncology and Blood and Marrow Transplantation, The Saban Research Institute at Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Min Y Mahdi
- Department of Radiology, The Saban Research Institute at Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Gregory M Shackleford
- Department of Radiology, The Saban Research Institute at Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Anat Erdreich-Epstein
- Department of Pediatrics, Division of Hematology, Oncology and Blood and Marrow Transplantation, The Saban Research Institute at Children's Hospital Los Angeles and Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, USA.
- Department of Pathology, Children's Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
| |
Collapse
|
109
|
High impact of miRNA-4521 on FOXM1 expression in medulloblastoma. Cell Death Dis 2019; 10:696. [PMID: 31541075 PMCID: PMC6754377 DOI: 10.1038/s41419-019-1926-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 08/06/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022]
Abstract
Medulloblastoma, an embryonal tumor of the cerebellum/fourth ventricle, is one of the most frequent malignant brain tumors in children. Although genetic variants are increasingly used in treatment stratification, survival of high-risk patients, characterized by leptomeningeal dissemination, TP53 mutation or MYC amplification, is still poor. FOXM1, a proliferation-specific oncogenic transcription factor, is deregulated in various solid tumors, including medulloblastoma, and triggers cellular proliferation, migration and genomic instability. In tissue samples obtained from medulloblastoma patients, the significant upregulation of FOXM1 was associated with a loss of its putative regulating microRNA, miR-4521. To understand the underlying mechanism, we investigated the effect of miR-4521 on the expression of the transcription factor FOXM1 in medulloblastoma cell lines. Transfection of this microRNA reduced proliferation and invasion of several medulloblastoma cell lines and induced programmed cell death through activation of caspase 3/7. Further, downstream targets of FOXM1 such as PLK1 and cyclin B1 were significantly reduced thus affecting the cell cycle progression in medulloblastoma cell lines. In conclusion, a restoration of miRNA-4521 may selectively suppress the pathophysiological effect of aberrant FOXM1 expression and serve as a targeted approach for medulloblastoma therapy.
Collapse
|
110
|
Worthington P, Drake KM, Li Z, Napper AD, Pochan DJ, Langhans SA. Implementation of a High-Throughput Pilot Screen in Peptide Hydrogel-Based Three-Dimensional Cell Cultures. SLAS DISCOVERY : ADVANCING LIFE SCIENCES R & D 2019; 24:714-723. [PMID: 31039326 PMCID: PMC7277073 DOI: 10.1177/2472555219844570] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cell-based high-throughput drug screening (HTS) is a common starting point for the drug discovery and development process. Currently, there is a push to combine complex cell culture systems with HTS to provide more clinically applicable results. However, there are mechanistic requirements inherent to HTS as well as material limitations that make this integration challenging. Here, we used the peptide-based shear-thinning hydrogel MAX8 tagged with the RGDS sequence to create a synthetic extracellular scaffold to culture cells in three dimensions and showed a preliminary implementation of the scaffold within an automated HTS setup using a pilot drug screen targeting medulloblastoma, a pediatric brain cancer. A total of 2202 compounds were screened in the 384-well format against cells encapsulated in the hydrogel as well as cells growing on traditional two-dimensional (2D) plastic. Eighty-two compounds passed the first round of screening at a single point of concentration. Sixteen-point dose-response was done on those 82 compounds, of which 17 compounds were validated. Three-dimensional (3D) cell-based HTS could be a powerful screening tool that allows researchers to finely tune the cell microenvironment, getting more clinically applicable data as a result. Here, we have shown the successful integration of a peptide-based hydrogel into the high-throughput format.
Collapse
Affiliation(s)
- Peter Worthington
- Nemours Center for Cancer Research, Alfred I duPont Hospital of Children, Wilmington, DE 19803, USA
- Department of Biomedical Engineering, University of Delaware, Newark, DE 19716, USA
| | - Katherine M. Drake
- Nemours Center for Cancer Research, Alfred I duPont Hospital of Children, Wilmington, DE 19803, USA
| | - Zhiqin Li
- Nemours Center for Cancer Research, Alfred I duPont Hospital of Children, Wilmington, DE 19803, USA
| | - Andrew D. Napper
- Nemours Center for Cancer Research, Alfred I duPont Hospital of Children, Wilmington, DE 19803, USA
| | - Darrin J. Pochan
- Department of Materials Science and Engineering and Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
| | - Sigrid A. Langhans
- Nemours Center for Cancer Research, Alfred I duPont Hospital of Children, Wilmington, DE 19803, USA
| |
Collapse
|
111
|
Tjandra KC, McCarthy N, Yang L, Laos AJ, Sharbeen G, Phillips PA, Forgham H, Sagnella SM, Whan RM, Kavallaris M, Thordarson P, McCarroll JA. Identification of Novel Medulloblastoma Cell-Targeting Peptides for Use in Selective Chemotherapy Drug Delivery. J Med Chem 2019; 63:2181-2193. [DOI: 10.1021/acs.jmedchem.9b00851] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Kristel C. Tjandra
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Nigel McCarthy
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
| | - Lu Yang
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
| | - Alistair J. Laos
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - George Sharbeen
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, and School of Medical Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Phoebe A. Phillips
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, and School of Medical Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Helen Forgham
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Women’s and Children’s Health, Faculty of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Sharon M. Sagnella
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
| | - Renee M. Whan
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- Biomedical Imaging Facility Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Maria Kavallaris
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Women’s and Children’s Health, Faculty of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Pall Thordarson
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Joshua A. McCarroll
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Women’s and Children’s Health, Faculty of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
| |
Collapse
|
112
|
Thomaz A, Pinheiro KDV, Souza BK, Gregianin L, Brunetto AL, Brunetto AT, de Farias CB, Jaeger MDC, Ramaswamy V, Nör C, Taylor MD, Roesler R. Antitumor Activities and Cellular Changes Induced by TrkB Inhibition in Medulloblastoma. Front Pharmacol 2019; 10:698. [PMID: 31297057 PMCID: PMC6606946 DOI: 10.3389/fphar.2019.00698] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/29/2019] [Indexed: 12/12/2022] Open
Abstract
Neurotrophins are critically involved in regulating normal neural development and plasticity. Brain-derived neurotrophic factor (BDNF), a neurotrophin that acts by binding to the tropomyosin receptor kinase B (TrkB) receptor, has also been implicated in the progression of several types of cancer. However, its role in medulloblastoma (MB), the most common type of malignant brain tumor afflicting children, remains unclear. Here we show that selective TrkB inhibition with the small molecule compound ANA-12 impaired proliferation and viability of human UW228 and D283 MB cells, and slowed the growth of MB tumors xenografted into nude mice. These effects were accompanied by increased apoptosis, reduced extracellular-regulated kinase (ERK) activity, increased expression of signal transducer and activator of transcription 3 (STAT3), and differential modulation of p21 expression dependent on the cell line. In addition, MB cells treated with ANA-12 showed morphological alterations consistent with differentiation, increased levels of the neural differentiation marker β-III Tubulin (TUBB3), and reduced expression of the stemness marker Nestin. These findings are consistent with the possibility that selective TrkB inhibition can display consistent anticancer effects in MB, possibly by modulating intracellular signaling and gene expression related to tumor progression, apoptosis, and differentiation.
Collapse
Affiliation(s)
- Amanda Thomaz
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Kelly de Vargas Pinheiro
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Bárbara Kunzler Souza
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Lauro Gregianin
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Pediatrics, School of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Algemir L Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Children's Cancer Institute, Porto Alegre, Brazil
| | - André T Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Children's Cancer Institute, Porto Alegre, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Children's Cancer Institute, Porto Alegre, Brazil
| | - Mariane da Cunha Jaeger
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Children's Cancer Institute, Porto Alegre, Brazil
| | - Vijay Ramaswamy
- The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ON, Canada.,Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Carolina Nör
- The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ON, Canada.,Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Michael D Taylor
- The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ON, Canada.,Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.,Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Neurosurgery, The Hospital for Sick Children, Toronto, ON, Canada
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| |
Collapse
|
113
|
Bharambe HS, Paul R, Panwalkar P, Jalali R, Sridhar E, Gupta T, Moiyadi A, Shetty P, Kazi S, Deogharkar A, Masurkar S, Yogi K, Kunder R, Gadewal N, Goel A, Goel N, Chinnaswamy G, Ramaswamy V, Shirsat NV. Downregulation of miR-204 expression defines a highly aggressive subset of Group 3/Group 4 medulloblastomas. Acta Neuropathol Commun 2019; 7:52. [PMID: 30944042 PMCID: PMC6448261 DOI: 10.1186/s40478-019-0697-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 03/10/2019] [Indexed: 11/18/2022] Open
Abstract
Genome-wide expression profiling studies have identified four core molecular subgroups of medulloblastoma: WNT, SHH, Group 3 and Group 4. Molecular markers are necessary for accurate risk stratification in the non-WNT subgroups due to the underlying heterogeneity in genetic alterations and overall survival. MiR-204 expression was evaluated in molecularly classified 260 medulloblastomas from an Indian cohort and in 763 medulloblastomas from the MAGIC cohort, SickKids, Canada. Low expression of miR-204 in the Group 3 / Group 4 tumors identify a highly aggressive subset of tumors having poor overall survival, in the two independent cohorts of medulloblastomas. Downregulation of miR-204 expression correlates with poor survival within the Group 4 as well indicating it as a valuable risk-stratification marker in the subgroup. Restoration of miR-204 expression in multiple medulloblastoma cell lines was found to inhibit their anchorage-independent growth, invasion potential and tumorigenicity. IGF2R was identified as a novel target of miR-204. MiR-204 expression resulted in downregulation of both M6PR and IGF2R that transport lysosomal proteases from the Golgi apparatus to the lysosomes. Consistent with this finding, miR-204 expression resulted in reduction in the levels of the lysosomal proteases in medulloblastoma cells. MiR-204 expression also resulted in inhibition of autophagy that is known to be dependent on the lysosomal degradation pathway and LC3B, a known miR-204 target. Treatment with HDAC inhibitors resulted in upregulation of miR-204 expression in medulloblastoma cells, suggesting therapeutic role for these inhibitors in the treatment of medulloblastomas. In summary, miR-204 is not only a valuable risk stratification marker in the combined cohort of Group 3 / Group 4 medulloblastomas as well as in the Group 4 itself, that has paucity of good prognostication markers, but also has therapeutic potential as indicated by its tumor suppressive effect on medulloblastoma cells.
Collapse
|
114
|
Hellwig M, Lauffer MC, Bockmayr M, Spohn M, Merk DJ, Harrison L, Ahlfeld J, Kitowski A, Neumann JE, Ohli J, Holdhof D, Niesen J, Schoof M, Kool M, Kraus C, Zweier C, Holmberg D, Schüller U. TCF4 (E2-2) harbors tumor suppressive functions in SHH medulloblastoma. Acta Neuropathol 2019; 137:657-673. [PMID: 30830316 DOI: 10.1007/s00401-019-01982-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/25/2019] [Accepted: 02/25/2019] [Indexed: 12/31/2022]
Abstract
The TCF4 gene encodes for the basic helix-loop-helix transcription factor 4 (TCF4), which plays an important role in the development of the central nervous system (CNS). Haploinsufficiency of TCF4 was found to cause Pitt-Hopkins syndrome (PTHS), a severe neurodevelopmental disorder. Recently, the screening of a large cohort of medulloblastoma (MB), a highly aggressive embryonal brain tumor, revealed almost 20% of adult patients with MB of the Sonic hedgehog (SHH) subtype carrying somatic TCF4 mutations. Interestingly, many of these mutations have previously been detected as germline mutations in patients with PTHS. We show here that overexpression of wild-type TCF4 in vitro significantly suppresses cell proliferation in MB cells, whereas mutant TCF4 proteins do not to the same extent. Furthermore, RNA sequencing revealed significant upregulation of multiple well-known tumor suppressors upon expression of wild-type TCF4. In vivo, a prenatal knockout of Tcf4 in mice caused a significant increase in apoptosis accompanied by a decreased proliferation and failed migration of cerebellar granule neuron precursor cells (CGNP), which are thought to be the cells of origin for SHH MB. In contrast, postnatal in vitro and in vivo knockouts of Tcf4 with and without an additional constitutive activation of the SHH pathway led to significantly increased proliferation of CGNP or MB cells. Finally, publicly available data from human MB show that relatively low expression levels of TCF4 significantly correlate with a worse clinical outcome. These results not only point to time-specific roles of Tcf4 during cerebellar development but also suggest a functional linkage between TCF4 mutations and the formation of SHH MB, proposing that TCF4 acts as a tumor suppressor during postnatal stages of cerebellar development.
Collapse
Affiliation(s)
- Malte Hellwig
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany
| | - Marlen C Lauffer
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
- Department of Psychiatry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Michael Bockmayr
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany
- Institute of Pathology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Michael Spohn
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany
- Bioinformatics Core, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Daniel J Merk
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
- Hertie Institute for Clinical Brain Research, University Hospital Tübingen, Tübingen, Germany
| | - Luke Harrison
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
- Research Unit Neurobiology of Diabetes, Helmholtz Center Munich, Neuherberg, Germany
| | - Julia Ahlfeld
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
| | - Annabel Kitowski
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
| | - Julia E Neumann
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jasmin Ohli
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany
| | - Dörthe Holdhof
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany
| | - Judith Niesen
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany
| | - Melanie Schoof
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany
| | - Marcel Kool
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Cornelia Kraus
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Christiane Zweier
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Dan Holmberg
- Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Ulrich Schüller
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
- Research Institute Children's Cancer Center Hamburg, Martinistrasse 52, N63 (HPI), 20251, Hamburg, Germany.
- Center for Neuropathology, Ludwig Maximilian University of Munich, Munich, Germany.
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| |
Collapse
|
115
|
Cormerais Y, Pagnuzzi‐Boncompagni M, Schrötter S, Giuliano S, Tambutté E, Endou H, Wempe MF, Pagès G, Pouysségur J, Picco V. Inhibition of the amino-acid transporter LAT1 demonstrates anti-neoplastic activity in medulloblastoma. J Cell Mol Med 2019; 23:2711-2718. [PMID: 30784173 PMCID: PMC6433660 DOI: 10.1111/jcmm.14176] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/29/2018] [Accepted: 01/02/2019] [Indexed: 12/19/2022] Open
Abstract
Most cases of medulloblastoma (MB) occur in young children. While the overall survival rate can be relatively high, current treatments combining surgery, chemo- and radiotherapy are very destructive for patient development and quality of life. Moreover, aggressive forms and recurrences of MB cannot be controlled by classical therapies. Therefore, new therapeutic approaches yielding good efficacy and low toxicity for healthy tissues are required to improve patient outcome. Cancer cells sustain their proliferation by optimizing their nutrient uptake capacities. The L-type amino acid transporter 1 (LAT1) is an essential amino acid carrier overexpressed in aggressive human cancers that was described as a potential therapeutic target. In this study, we investigated the therapeutic potential of JPH203, a LAT1-specific pharmacological inhibitor, on two independent MB cell lines belonging to subgroups 3 (HD-MB03) and Shh (DAOY). We show that while displaying low toxicity towards normal cerebral cells, JPH203 disrupts AA homeostasis, mTORC1 activity, proliferation and survival in MB cells. Moreover, we demonstrate that a long-term treatment with JPH203 does not lead to resistance in MB cells. Therefore, this study suggests that targeting LAT1 with JPH203 is a promising therapeutic approach for MB treatment.
Collapse
Affiliation(s)
- Yann Cormerais
- Biomedical DepartmentCentre Scientifique de MonacoMonacoPrincipality of Monaco
- Present address:
Department of Genetics and Complex DiseasesHarvard T. H. Chan School of Public HealthBostonMassachusetts
| | | | - Sandra Schrötter
- Department of Genetics and Complex DiseasesHarvard T. H. Chan School of Public HealthBostonMassachusetts
| | - Sandy Giuliano
- Biomedical DepartmentCentre Scientifique de MonacoMonacoPrincipality of Monaco
| | - Eric Tambutté
- Marine Biology DepartmentCentre Scientifique de MonacoMonacoPrincipality of Monaco
| | | | - Michael F. Wempe
- School of PharmacyAnschutz Medical Campus, University of Colorado DenverAuroraColorado
| | - Gilles Pagès
- Biomedical DepartmentCentre Scientifique de MonacoMonacoPrincipality of Monaco
- Institute for Research on Cancer and Aging of Nice (IRCAN), CNRS UMR 7284, INSERM U1081, Centre Antoine Lacassagne, University of Cote d’AzurNiceFrance
| | - Jacques Pouysségur
- Biomedical DepartmentCentre Scientifique de MonacoMonacoPrincipality of Monaco
- Institute for Research on Cancer and Aging of Nice (IRCAN), CNRS UMR 7284, INSERM U1081, Centre Antoine Lacassagne, University of Cote d’AzurNiceFrance
| | - Vincent Picco
- Biomedical DepartmentCentre Scientifique de MonacoMonacoPrincipality of Monaco
| |
Collapse
|
116
|
Menyhárt O, Győrffy B. Principles of tumorigenesis and emerging molecular drivers of SHH-activated medulloblastomas. Ann Clin Transl Neurol 2019; 6:990-1005. [PMID: 31139698 PMCID: PMC6529984 DOI: 10.1002/acn3.762] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 12/20/2022] Open
Abstract
SHH-activated medulloblastomas (SHH-MB) account for 25-30% of all medulloblastomas (MB) and occur with a bimodal age distribution, encompassing many infant and adult, but fewer childhood cases. Different age groups are characterized by distinct survival outcomes and age-specific alterations of regulatory pathways. Here, we review SHH-specific genetic aberrations and signaling pathways. Over 95% of SHH-MBs contain at least one driver event - the activating mutations frequently affect sonic hedgehog signaling (PTCH1, SMO, SUFU), genome maintenance (TP53), and chromatin modulation (KMT2D, KMT2C, HAT complexes), while genes responsible for transcriptional regulation (MYCN) are recurrently amplified. SHH-MBs have the highest prevalence of damaging germline mutations among all MBs. TP53-mutant MBs are enriched among older children and have the worst prognosis among all SHH-MBs. Numerous genetic aberrations, including mutations of TERT, DDX3X, and the PI3K/AKT/mTOR pathway are almost exclusive to adult patients. We elaborate on the newest development within the evolution of molecular subclassification, and compare proposed risk categories across emerging classification systems. We discuss discoveries based on preclinical models and elaborate on the applicability of potential new therapies, including BET bromodomain inhibitors, statins, inhibitors of SMO, AURK, PLK, cMET, targeting stem-like cells, and emerging immunotherapeutic strategies. An enormous amount of data on the genetic background of SHH-MB have accumulated, nevertheless, subgroup affiliation does not provide reliable prediction about response to therapy. Emerging subtypes within SHH-MB offer more layered risk stratifications. Rational clinical trial designs with the incorporation of available molecular knowledge are inevitable. Improved collaboration across the scientific community will be imperative for therapeutic breakthroughs.
Collapse
Affiliation(s)
- Otília Menyhárt
- 2nd Department of Pediatrics Semmelweis University H-1094 Budapest Hungary.,MTA TTK Lendület Cancer Biomarker Research Group Institute of Enzymology Hungarian Academy of Sciences Magyar tudósok körútja 2 Budapest Hungary
| | - Balázs Győrffy
- 2nd Department of Pediatrics Semmelweis University H-1094 Budapest Hungary.,MTA TTK Lendület Cancer Biomarker Research Group Institute of Enzymology Hungarian Academy of Sciences Magyar tudósok körútja 2 Budapest Hungary
| |
Collapse
|
117
|
Menyhárt O, Giangaspero F, Győrffy B. Molecular markers and potential therapeutic targets in non-WNT/non-SHH (group 3 and group 4) medulloblastomas. J Hematol Oncol 2019; 12:29. [PMID: 30876441 PMCID: PMC6420757 DOI: 10.1186/s13045-019-0712-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/26/2019] [Indexed: 12/31/2022] Open
Abstract
Childhood medulloblastomas (MB) are heterogeneous and are divided into four molecular subgroups. The provisional non-wingless-activated (WNT)/non-sonic hedgehog-activated (SHH) category combining group 3 and group 4 represents over two thirds of all MBs, coupled with the highest rates of metastases and least understood pathology. The molecular era expanded our knowledge about molecular aberrations involved in MB tumorigenesis, and here, we review processes leading to non-WNT/non-SHH MB formations. The heterogeneous group 3 and group 4 MBs frequently harbor rare individual genetic alterations, yet the emerging profiles suggest that infrequent events converge on common, potentially targetable signaling pathways. A mutual theme is the altered epigenetic regulation, and in vitro approaches targeting epigenetic machinery are promising. Growing evidence indicates the presence of an intermediate, mixed signature group along group 3 and group 4, and future clarifications are imperative for concordant classification, as misidentifying patient samples has serious implications for therapy and clinical trials. To subdue the high MB mortality, we need to discern mechanisms of disease spread and recurrence. Current preclinical models do not represent the full scale of group 3 and group 4 heterogeneity: all of existing group 3 cell lines are MYC-amplified and most mouse models resemble MYC-activated MBs. Clinical samples provide a wealth of information about the genetic divergence between primary tumors and metastatic clones, but recurrent MBs are rarely resected. Molecularly stratified treatment options are limited, and targeted therapies are still in preclinical development. Attacking these aggressive tumors at multiple frontiers will be needed to improve stagnant survival rates.
Collapse
Affiliation(s)
- Otília Menyhárt
- 2nd Department of Pediatrics, Semmelweis University, Tűzoltó u. 7-9, Budapest, H-1094, Hungary.,MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, Hungarian Academy of Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
| | - Felice Giangaspero
- Department of Radiological, Oncological, and Anatomo-Pathological Sciences, University Sapienza of Rome, Rome, Italy.,IRCCS Neuromed, Pozzilli (Is), Italy
| | - Balázs Győrffy
- 2nd Department of Pediatrics, Semmelweis University, Tűzoltó u. 7-9, Budapest, H-1094, Hungary. .,MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, Hungarian Academy of Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary.
| |
Collapse
|
118
|
Łastowska M, Karkucińska-Więckowska A, Waschek JA, Niewiadomski P. Differential Expression of Mitochondrial Biogenesis Markers in Mouse and Human SHH-Subtype Medulloblastoma. Cells 2019; 8:E216. [PMID: 30841515 PMCID: PMC6468894 DOI: 10.3390/cells8030216] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 12/11/2022] Open
Abstract
Medulloblastoma is a brain tumor that arises predominantly in infants and children. It is the most common pediatric brain malignancy. Around 25% of medulloblastomas are driven by constitutive activation of the Hedgehog signaling pathway. Hedgehog-driven medulloblastoma is often studied in the laboratory using genetic mouse models with overactive Hedgehog signaling, which recapitulate many of the pathological features of human Hedgehog-dependent tumors. However, we show here that on a molecular level the human and mouse HH-dependent MB are quite distinct, with human, but not mouse, tumors characterized by the presence of markers of increased oxidative phosphorylation and mitochondrial biogenesis. The latter suggests that, unlike for many other types of tumors, a switch to glycolytic metabolism might not be co-opted by human SHH-MB to perpetuate their survival and growth. This needs to be taken into consideration and could potentially be exploited in the design of therapies.
Collapse
Affiliation(s)
- Maria Łastowska
- Department of Pathology, The Children's Memorial Health Institute, Dzieci Polskich 20, 04-730 Warsaw, Poland.
- Department of Experimental and Clinical Neuropathology, Mossakowski Medical Research Centre Polish Academy of Sciences, A. Pawińskiego 5, 02-106 Warsaw, Poland.
| | | | - James A Waschek
- Intellectual Development and Disabilities Research Center, The David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
| | - Paweł Niewiadomski
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland.
| |
Collapse
|
119
|
Cruzeiro GAV, Salomão KB, de Biagi Jr CAO, Baumgartner M, Sturm D, Lira RCP, de Almeida Magalhães T, Baroni Milan M, da Silva Silveira V, Saggioro FP, de Oliveira RS, dos Santos Klinger PH, Seidinger AL, Yunes JA, de Paula Queiroz RG, Oba-Shinjo SM, Scrideli CA, Nagahashi SMK, Tone LG, Valera ET. A simplified approach using Taqman low-density array for medulloblastoma subgrouping. Acta Neuropathol Commun 2019; 7:33. [PMID: 30832734 PMCID: PMC6398239 DOI: 10.1186/s40478-019-0681-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 02/18/2019] [Indexed: 12/31/2022] Open
Abstract
Next-generation sequencing platforms are routinely used for molecular assignment due to their high impact for risk stratification and prognosis in medulloblastomas. Yet, low and middle-income countries still lack an accurate cost-effective platform to perform this allocation. TaqMan Low Density array (TLDA) assay was performed using a set of 20 genes in 92 medulloblastoma samples. The same methodology was assessed in silico using microarray data for 763 medulloblastoma samples from the GSE85217 study, which performed MB classification by a robust integrative method (Transcriptional, Methylation and cytogenetic profile). Furthermore, we validated in 11 MBs samples our proposed method by Methylation Array 450 K to assess methylation profile along with 390 MB samples (GSE109381) and copy number variations. TLDA with only 20 genes accurately assigned MB samples into WNT, SHH, Group 3 and Group 4 using Pearson distance with the average-linkage algorithm and showed concordance with molecular assignment provided by Methylation Array 450 k. Similarly, we tested this simplified set of gene signatures in 763 MB samples and we were able to recapitulate molecular assignment with an accuracy of 99.1% (SHH), 94.29% (WNT), 92.36% (Group 3) and 95.40% (Group 4), against 97.31, 97.14, 88.89 and 97.24% (respectively) with the Ward.D2 algorithm. t-SNE analysis revealed a high level of concordance (k = 4) with minor overlapping features between Group 3 and Group 4. Finally, we condensed the number of genes to 6 without significantly losing accuracy in classifying samples into SHH, WNT and non-SHH/non-WNT subgroups. Additionally, we found a relatively high frequency of WNT subgroup in our cohort, which requires further epidemiological studies. TLDA is a rapid, simple and cost-effective assay for classifying MB in low/middle income countries. A simplified method using six genes and restricting the final stratification into SHH, WNT and non-SHH/non-WNT appears to be a very interesting approach for rapid clinical decision-making.
Collapse
|
120
|
Cancer risk from low dose radiation in Ptch1/ mice with inactive DNA repair systems: Therapeutic implications for medulloblastoma. DNA Repair (Amst) 2019; 74:70-79. [DOI: 10.1016/j.dnarep.2018.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/03/2018] [Accepted: 12/14/2018] [Indexed: 12/14/2022]
|
121
|
Shackleford GM, Mahdi MY, Moats RA, Hawes D, Tran HC, Finlay JL, Hoang TQ, Meng EF, Erdreich-Epstein A. Continuous and bolus intraventricular topotecan prolong survival in a mouse model of leptomeningeal medulloblastoma. PLoS One 2019; 14:e0206394. [PMID: 30608927 PMCID: PMC6319703 DOI: 10.1371/journal.pone.0206394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/18/2018] [Indexed: 01/12/2023] Open
Abstract
Leptomeningeal metastasis remains a difficult clinical challenge. Some success has been achieved by direct administration of therapeutics into the cerebrospinal fluid (CSF) circumventing limitations imposed by the blood brain barrier. Here we investigated continuous infusion versus bolus injection of therapy into the CSF in a preclinical model of human Group 3 medulloblastoma, the molecular subgroup with the highest incidence of leptomeningeal disease. Initial tests of selected Group 3 human medulloblastoma cell lines in culture showed that D283 Med and D425 Med were resistant to cytosine arabinoside and methotrexate. D283 Med cells were also resistant to topotecan, whereas 1 μM topotecan killed over 99% of D425 Med cells. We therefore introduced D425 Med cells, modified to express firefly luciferase, into the CSF of immunodeficient mice. Mice were then treated with topotecan or saline in five groups: continuous intraventricular (IVT) topotecan via osmotic pump (5.28 μg/day), daily bolus IVT topotecan injections with a similar daily dose (6 μg/day), systemic intraperitoneal injections of a higher daily dose of topotecan (15 μg/day), daily IVT pumped saline and daily intraperitoneal injections of saline. Bioluminescence analyses revealed that both IVT topotecan treatments effectively slowed leptomeningeal tumor growth in the brains. Histological analysis showed that they were associated with localized brain necrosis, possibly due to backtracking of topotecan around the catheter. In the spines, bolus IVT topotecan showed a trend towards slower tumor growth compared to continuous (pump) IVT topotecan, as measured by bioluminescence. Both continuous and bolus topotecan IVT showed longer survival compared to other groups. Thus, both direct IVT topotecan CSF delivery methods produced better anti-medulloblastoma effect compared to systemic therapy at the dosages used here.
Collapse
Affiliation(s)
- Gregory M. Shackleford
- Department of Radiology, The Saban Research Institute, Children’s Hospital Los Angeles, Los Angeles, California, United states of America
| | - Min Y. Mahdi
- Department of Radiology, The Saban Research Institute, Children’s Hospital Los Angeles, Los Angeles, California, United states of America
| | - Rex A. Moats
- Department of Radiology, The Saban Research Institute, Children’s Hospital Los Angeles, Los Angeles, California, United states of America
| | - Debra Hawes
- Department of Pathology, Children’s Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, California, United states of America
| | - Hung C. Tran
- Division of Hematology, Oncology and Blood & Marrow Transplantation, Department of Pediatrics, The Saban Research Institute, Children’s Hospital Los Angeles, Los Angeles, California, United states of America
| | - Jonathan L. Finlay
- Division of Hematology, Oncology and Blood & Marrow Transplantation, Department of Pediatrics, The Saban Research Institute, Children’s Hospital Los Angeles, Los Angeles, California, United states of America
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United states of America
| | - Tuan Q. Hoang
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, United states of America
| | - Ellis F. Meng
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, United states of America
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, California, United states of America
| | - Anat Erdreich-Epstein
- Department of Pathology, Children’s Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, California, United states of America
- Division of Hematology, Oncology and Blood & Marrow Transplantation, Department of Pediatrics, The Saban Research Institute, Children’s Hospital Los Angeles, Los Angeles, California, United states of America
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United states of America
| |
Collapse
|
122
|
Badodi S, Marino S, Guglielmi L. Establishment and Culture of Patient-Derived Primary Medulloblastoma Cell Lines. Methods Mol Biol 2019; 1869:23-36. [PMID: 30324511 DOI: 10.1007/978-1-4939-8805-1_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Established cell lines have been extensively used in cancer research. They are easy to obtain and expand and are composed of a relatively uniform population of cells. When experimental conditions are kept standard, these cells allow a high reproducibility of experimental findings from independent research groups. However, because these cell lines have been propagated in culture for decades, additional genetic lesions may be acquired leading to modification of their characteristics as compared to the original tumor. Primary cultures represent a valid alternative. Here, we describe standardized protocols to establish medulloblastoma (MB) patient-derived primary cultures from fresh tumor samples. MB primary cells grow as an adherent culture on a laminin coating and can be propagated in vitro for a limited number of passages, therefore reducing the chances to accumulate molecular alterations compared to long-term cultures. Consequently, they better resemble the original tumor both in terms of biological behavior and molecular characteristics. Low-passage MB primary cells can be used as an in vitro model for biochemical studies and functional assays, representing a useful tool to dissect the contribution of molecular pathways to MB pathogenesis. They can also represent a useful screening tool for potential therapeutic agents in preclinical studies.
Collapse
Affiliation(s)
- Sara Badodi
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Silvia Marino
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
| | - Loredana Guglielmi
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| |
Collapse
|
123
|
Laneve P, Rea J, Caffarelli E. Long Noncoding RNAs: Emerging Players in Medulloblastoma. Front Pediatr 2019; 7:67. [PMID: 30923703 PMCID: PMC6426782 DOI: 10.3389/fped.2019.00067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 02/18/2019] [Indexed: 01/02/2023] Open
Abstract
Central Nervous System tumors are the leading cause of cancer-related death in children, and medulloblastoma has the highest incidence rate. The current therapies achieve a 5-year survival rate of 50-80%, but often inflict severe secondary effects demanding the urgent development of novel, effective, and less toxic therapeutic strategies. Historically identified on a histopathological basis, medulloblastoma was later classified into four major subgroups-namely WNT, SHH, Group 3, and Group 4-each characterized by distinct transcriptional profiles, copy-number aberrations, somatic mutations, and clinical outcomes. Additional complexity was recently provided by integrating gene- and non-gene-based data, which indicates that each subclass can be further subdivided into specific subtypes. These deeper classifications, while getting over the typical tumor heterogeneity, indicate that different forms of medulloblastoma hold different molecular drivers that can be successfully exploited for a greater diagnostic accuracy and for the development of novel, targeted treatments. Long noncoding RNAs are transcripts that lack coding potential and play relevant roles as regulators of gene expression in mammalian differentiation and developmental processes. Their cell type- and tissue-specificity, higher than mRNAs, make them more informative about cell- type identity than protein-coding genes. Remarkably, about 40% of long noncoding RNAs are expressed in the brain and their aberrant expression has been linked to neuro-oncological disorders. However, while their involvement in gliomas and neuroblastomas has been extensively studied, their role in medulloblastoma is still poorly explored. Here, we present an overview of current knowledge regarding the function played by long noncoding RNAs in medulloblastoma biology.
Collapse
Affiliation(s)
- Pietro Laneve
- Institute of Molecular Biology and Pathology, National Research Council, Rome, Italy
| | - Jessica Rea
- Department of Biology and Biotechnology, Sapienza University of Rome, Rome, Italy
| | - Elisa Caffarelli
- Institute of Molecular Biology and Pathology, National Research Council, Rome, Italy
| |
Collapse
|
124
|
Martirosian V, Neman J. Medulloblastoma: Challenges and advances in treatment and research. Cancer Rep (Hoboken) 2018; 2:e1146. [PMCID: PMC7941576 DOI: 10.1002/cnr2.1146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/04/2018] [Accepted: 10/05/2018] [Indexed: 12/03/2023] Open
Abstract
Background Medulloblastoma (MB) is a pediatric brain tumor occurring in the posterior fossa. MB is a highly heterogeneous tumor, which can be grouped into four main subgroups: WNT, SHH, Group 3, and Group 4. Each subgroup is different both in its implicated pathways and pathology, as well as how they are treated in the clinic. Recent Findings Standard protocol for MB treatment consists of maximal safe resection, followed by craniospinal radiation (in patients 3 years and older) and adjuvant chemotherapy. Advances in clinical stratification of this tumor have allowed establishment of treatment de‐escalation trials aimed at reducing long‐term side effects. However, there have been few advances in identifying novel therapeutic strategies for MB patients due to difficulties in creating chemotherapeutics that can bypass the blood‐brain‐barrier—among other factors. On the other hand, with the help of whole genome sequencing technologies, molecular pathways involved in MB pathogenesis have become clearer and have helped drive MB research. Regardless, this advance in research has yet to translate to the clinic, which may be due to the inability of current in vivo and in vitro models to accurately recapitulate this heterogeneous tumor in humans. Conclusions There have been significant advances in knowledge and treatment of medulloblastoma over the last few decades. Whole genome sequencing has helped elucidate clear differences between the subgroups of MB, allowing physicians to better tailor treatments to each patient in an effort to reduce long‐term sequelae. However, there are still many more obstacles to overcome, including less cytotoxic therapies in the clinic and better modeling systems to accurately replicate this disease in the laboratory. Scientists and physicians must work in a more cohesive manner to create translatable results from the laboratory to the clinic—helping improve therapies for medulloblastoma patients.
Collapse
Affiliation(s)
- Vahan Martirosian
- Department of Neurological Surgery, Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Josh Neman
- Department of Neurological Surgery, Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCaliforniaUSA
| |
Collapse
|
125
|
Briel-Pump A, Beez T, Ebbert L, Remke M, Weinhold S, Sabel MC, Sorg RV. Accumulation of protoporphyrin IX in medulloblastoma cell lines and sensitivity to subsequent photodynamic treatment. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 189:298-305. [PMID: 30445362 DOI: 10.1016/j.jphotobiol.2018.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/04/2018] [Indexed: 01/10/2023]
Abstract
BACKGROUND Medulloblastoma (MB) is the most common malignant primary brain tumor of childhood. High risk patients still have a poor outcome, and especially young patients suffer from standard therapy induced sequelae. Therefore, other therapeutic options need to be explored. In glioblastoma (GBM), application of 5-aminolaevulinic acid (5-ALA) results in selective accumulation of protoporphyrin IX (PPIX) in the tumor cells, which can be exploited during fluorescence-guided surgery to increase the extent of resection or for photodynamic therapy (PDT) induced phototoxicity. It is not entirely clear, whether MB cells accumulate PPIX and are sensitive to PDT. METHODS Human MYC-amplified (Med8A and D283) and non-amplified (UW228-2 and ONS76) MB cell lines were incubated for 2, 4 or 6 h with increasing doses (0-100 μg/ml) of 5-ALA, and PPIX accumulation was determined by flow cytometry. To assess sensitivity to 5-ALA/PDT, cells were incubated with 5-ALA and subsequently exposed to laser light of 635 nm wavelength (18.75 J/cm2). After an additional 24 h culture period, viability of cells was quantified using the WST-1 assay. Expression of ferrochelatase was detected by reverse transcription and quantitative polymerase chain reaction. Ferrochelatase activity was quantified by measuring the enzymatic conversion of PPIX to zinc-protoporphyrin. Expression of the ABCG2 transporter protein CD338 was detected by flow cytometry. RESULTS All MB cell lines showed a time- and dose-dependent accumulation of PPIX after exposure to exogenous 5-ALA and became sensitive to 5-ALA/PDT-induced phototoxicity. PPIX accumulation was reduced compared to U373 GBM cells at shorter incubation periods and limiting 5-ALA doses. Moreover, not all MB cells became PPIX positive and overall phototoxicity was lower in the MB cell lines. Notably, the MYC-amplified MB cells demonstrated a more pronounced photosensitivity compared to their non-amplified counterparts. There was no difference in expression of ferrochelatase, but enzymatic activity appeared to be reduced in the MB cells compared to U373 GBM cells, whereas CD338 was expressed on the MB cells only. CONCLUSION Medulloblastoma cell lines accumulate PPIX after application of 5-ALA and become sensitive to PDT, associated with low ferrochelatase expression and activity. Photosensitivity is more pronounced in MYC-amplified cell lines. In contrast to GBM cells, however, PPIX accumulation appears to be reduced, restricted to a subset of cells and associated with lower photosensitivity of the MB cell lines, possibly due to expression of the ABCG2 transporter protein CD338 on MB cells.
Collapse
Affiliation(s)
- Anna Briel-Pump
- Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany; Department of Neurosurgery, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Thomas Beez
- Department of Neurosurgery, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Lara Ebbert
- Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Marc Remke
- Department of Pediatric Oncology, Hematology and Immunology, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany; Department of Neuropathology, Medical Faculty, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany; Department of Pediatric Neuro-Oncogenomics, German Cancer Research Center (DKFZ), Heidelberg, Germany; German Cancer Consortium (DKTK), partner site Essen/Düsseldorf, Düsseldorf, Germany
| | - Sandra Weinhold
- Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Michael C Sabel
- Department of Neurosurgery, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Rüdiger V Sorg
- Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich Heine University Hospital, Moorenstrasse 5, 40225 Düsseldorf, Germany.
| |
Collapse
|
126
|
Molecular characterization of Wnt pathway and function of β-catenin overexpression in medulloblastoma cell lines. Cytotechnology 2018; 70:1713-1722. [PMID: 30374857 DOI: 10.1007/s10616-018-0260-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/17/2018] [Indexed: 02/07/2023] Open
Abstract
Medulloblastoma (MB) is the most common malignant childhood brain tumor. MB is currently classified into four molecular subgroups (Wnt, Shh, Group 3, and Group 4). The wingless (Wnt) pathway is responsible for embryonic development and is deregulated in MB. We analyzed the activation of the Wnt pathway in MB cell lines and its correlation with the Shh pathway, with emphasis on the importance of cellular characterization. Transient β-catenin transfection led to an increase in the β-catenin gene and protein expression in MB cell lines. Wnt pathway activation resulted in a reduced number of colonies in all cell lines studied and a significant increase in the G2/M cell cycle phase only in ONS-76 cells. Regarding the Shh pathway, transfection caused a reduced expression of the PTCH1 and SMO genes only in the UW473 cells. Further studies are needed to understand the mechanism underlying the molecular events associated with the effects of Wnt activation in MB.
Collapse
|
127
|
Dobson THW, Gopalakrishnan V. Preclinical Models of Pediatric Brain Tumors-Forging Ahead. Bioengineering (Basel) 2018; 5:bioengineering5040081. [PMID: 30279402 PMCID: PMC6315787 DOI: 10.3390/bioengineering5040081] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/22/2018] [Accepted: 09/27/2018] [Indexed: 12/11/2022] Open
Abstract
Approximately five out of 100,000 children from 0 to 19 years old are diagnosed with a brain tumor. These children are treated with medication designed for adults that are highly toxic to a developing brain. Those that survive are at high risk for a lifetime of limited physical, psychological, and cognitive abilities. Despite much effort, not one drug exists that was designed specifically for pediatric patients. Stagnant government funding and the lack of economic incentives for the pharmaceutical industry greatly limits preclinical research and the development of clinically applicable pediatric brain tumor models. As more data are collected, the recognition of disease sub-groups based on molecular heterogeneity increases the need for designing specific models suitable for predictive drug screening. To overcome these challenges, preclinical approaches will need continual enhancement. In this review, we examine the advantages and shortcomings of in vitro and in vivo preclinical pediatric brain tumor models and explore potential solutions based on past, present, and future strategies for improving their clinical relevancy.
Collapse
Affiliation(s)
- Tara H W Dobson
- Department of Pediatrics, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA.
| | - Vidya Gopalakrishnan
- Department of Pediatrics, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA.
- Department of Molecular & Cellular Oncology, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA.
- Brain Tumor Center, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA.
- Center for Cancer Epigenetics, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA.
- Graduate School of Biomedical Sciences UT-Health Science Center, Houston, TX 77030, USA.
| |
Collapse
|
128
|
Mascaro-Cordeiro B, Oliveira ID, Tesser-Gamba F, Pavon LF, Saba-Silva N, Cavalheiro S, Dastoli P, Toledo SRC. Valproic acid treatment response in vitro is determined by TP53 status in medulloblastoma. Childs Nerv Syst 2018; 34:1497-1509. [PMID: 29785653 DOI: 10.1007/s00381-018-3817-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 04/25/2018] [Indexed: 12/18/2022]
Abstract
PURPOSE Histone deacetylate inhibitors (HDACi), as valproic acid (VA), have been reported to enhance efficacy and to prevent drug resistance in some tumors, including medulloblastoma (MB). In the present study, we investigated VA role, combined to cisplatin (CDDP) in cell viability and gene expression of MB cell lines. METHODS Dose-response curve determined IC50 values for each treatment: (1) VA single, (2) CDDP single, and (3) VA and CDDP combined. Cytotoxicity and flow cytometry evaluated cell viability after exposure to treatments. Quantitative PCR evaluated gene expression levels of AKT, CTNNB1, GLI1, KDM6A, KDM6B, NOTCH2, PTCH1, and TERT, before and after treatment. Besides, we performed next-generation sequencing (NGS) for PTCH1, TERT, and TP53 genes. RESULTS The most effective treatment to reduce viability was combined for D283MED and ONS-76; and CDDP single for DAOY cells (p < 0.0001). TERT, GLI1, and AKT genes were overexpressed after treatments with VA. D283MED and ONS-76 cells presented variants in TERT and PTCH1, respectively and DAOY cell line presented a TP53 mutation. CONCLUSIONS MB tumors belonging to SHH molecular subgroup, with TP53MUT, would be the ones that present high risk in relation to VA use during the treatment, while TP53WT MBs can benefit from VA therapy, both SHH and groups 3 and 4. Our study shows a new perspective about VA action in medulloblastoma cells, raising the possibility that VA may act in different patterns. According to the genetic background of MB cell, VA can stimulate cell cycle arrest and apoptosis or induce resistance to treatment via signaling pathways activation.
Collapse
Affiliation(s)
- Bruna Mascaro-Cordeiro
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil.,Department of Morphology and Genetics, Division of Genetics, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Indhira Dias Oliveira
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil
| | - Francine Tesser-Gamba
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil
| | - Lorena Favaro Pavon
- Departament of Neurology, Federal University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Nasjla Saba-Silva
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil
| | - Sergio Cavalheiro
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil.,Departament of Neurology, Federal University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Patrícia Dastoli
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil
| | - Silvia Regina Caminada Toledo
- Pediatrics Oncology Institute-GRAACC (Grupo de Apoio ao Adolescente e à Criança com Câncer) /UNIFESP (Federal University of Sao Paulo), Rua Botucatu, 743, Floor 8 - Genetics Laboratory, Vila Clementino, São Paulo, SP, Zip Code 04023-062, Brazil. .,Department of Morphology and Genetics, Division of Genetics, Federal University of São Paulo, São Paulo, SP, Brazil.
| |
Collapse
|
129
|
Zhu D, Osuka S, Zhang Z, Reichert ZR, Yang L, Kanemura Y, Jiang Y, You S, Zhang H, Devi NS, Bhattacharya D, Takano S, Gillespie GY, Macdonald T, Tan C, Nishikawa R, Nelson WG, Olson JJ, Van Meir EG. BAI1 Suppresses Medulloblastoma Formation by Protecting p53 from Mdm2-Mediated Degradation. Cancer Cell 2018; 33:1004-1016.e5. [PMID: 29894688 PMCID: PMC6002773 DOI: 10.1016/j.ccell.2018.05.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/29/2017] [Accepted: 05/11/2018] [Indexed: 01/20/2023]
Abstract
Adhesion G protein-coupled receptors (ADGRs) encompass 33 human transmembrane proteins with long N termini involved in cell-cell and cell-matrix interactions. We show the ADGRB1 gene, which encodes Brain-specific angiogenesis inhibitor 1 (BAI1), is epigenetically silenced in medulloblastomas (MBs) through a methyl-CpG binding protein MBD2-dependent mechanism. Knockout of Adgrb1 in mice augments proliferation of cerebellar granule neuron precursors, and leads to accelerated tumor growth in the Ptch1+/- transgenic MB mouse model. BAI1 prevents Mdm2-mediated p53 polyubiquitination, and its loss substantially reduces p53 levels. Reactivation of BAI1/p53 signaling axis by a brain-permeable MBD2 pathway inhibitor suppresses MB growth in vivo. Altogether, our data define BAI1's physiological role in tumorigenesis and directly couple an ADGR to cancer formation.
Collapse
Affiliation(s)
- Dan Zhu
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Satoru Osuka
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Zhaobin Zhang
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | | | - Liquan Yang
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Yonehiro Kanemura
- Division of Regenerative Medicine, Institute for Clinical Research, Osaka National Hospital, National Hospital Organization, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan
| | - Ying Jiang
- Department of Pharmaceutical Sciences, Mercer University, Atlanta, GA 30322, USA
| | - Shuo You
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Hanwen Zhang
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Narra S Devi
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Debanjan Bhattacharya
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Shingo Takano
- Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - G Yancey Gillespie
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Tobey Macdonald
- Department of Pediatrics, School of Medicine, Emory University, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University, 1365C Clifton Road N.E, C5078, Atlanta, GA 30322, USA
| | - Chalet Tan
- Department of Pharmaceutical Sciences, Mercer University, Atlanta, GA 30322, USA
| | - Ryo Nishikawa
- Department of Neuro-Oncology/Neurosurgery, Saitama Medical University International Medical Center, Saitama, Japan
| | - William G Nelson
- Johns Hopkins University, 401 North Broadway, Baltimore, MD 21287, USA
| | - Jeffrey J Olson
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University, 1365C Clifton Road N.E, C5078, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Erwin G Van Meir
- Laboratory of Molecular Neuro-Oncology, Department of Neurosurgery, School of Medicine, Emory University, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University, 1365C Clifton Road N.E, C5078, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA.
| |
Collapse
|
130
|
Krüger K, Geist K, Stuhldreier F, Schumacher L, Blümel L, Remke M, Wesselborg S, Stork B, Klöcker N, Bormann S, Roos WP, Honnen S, Fritz G. Multiple DNA damage-dependent and DNA damage-independent stress responses define the outcome of ATR/Chk1 targeting in medulloblastoma cells. Cancer Lett 2018; 430:34-46. [PMID: 29753759 DOI: 10.1016/j.canlet.2018.05.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 05/03/2018] [Accepted: 05/08/2018] [Indexed: 01/04/2023]
Abstract
Targeting of oncogene-driven replicative stress as therapeutic option for high-risk medullobastoma was assessed using a panel of medulloblastoma cells differing in their c-Myc expression [i.e. group SHH (c-Myc low) vs. group 3 (c-Myc high)]. High c-Myc levels were associated with hypersensitivity to pharmacological Chk1 and ATR inhibition but not to CDK inhibition nor to conventional (genotoxic) anticancer therapeutics. The enhanced sensitivity of group 3 medulloblastoma cells to Chk1 inhibitors likely results from enhanced damage to intracellular organelles, elevated replicative stress and DNA damage and activation of apoptosis/necrosis. Furthermore, Chk1 inhibition differentially affected c-Myc expression and functions. In c-Myc high cells, Chk1 blockage decreased c-Myc and p-GSK3α protein and increased p21 and GADD45A mRNA expression. By contrast, c-Myc low cells revealed increased p-GSK3β protein and CHOP and DUSP1 mRNA levels. Inhibition of Chk1 sensitized medulloblastoma cells to additional replication stress evoked by cisplatin independent of c-Myc. Importantly, Chk1 inhibition only caused minor toxicity in primary rat neurons in vitro. Collectively, targeting of ATR/Chk1 effectively triggers death in high-risk medulloblastoma, potentiates the anticancer efficacy of cisplatin and is well tolerated in non-cancerous neuronal cells.
Collapse
Affiliation(s)
- Katharina Krüger
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Katharina Geist
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Fabian Stuhldreier
- Institute of Molecular Medicine I, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Lena Schumacher
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Lena Blümel
- Clinic of Pediatric Oncology/Neuro-Oncology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Marc Remke
- Clinic of Pediatric Oncology/Neuro-Oncology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Sebastian Wesselborg
- Institute of Molecular Medicine I, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Björn Stork
- Institute of Molecular Medicine I, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Nicolaj Klöcker
- Institute of Neurophysiology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Stefanie Bormann
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Wynand P Roos
- Institute of Toxicology, University Medical Center, Obere Zahlbacher Str. 67, 55131, Mainz, Germany
| | - Sebastian Honnen
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Gerhard Fritz
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany.
| |
Collapse
|
131
|
Sengupta S, Sobo M, Lee K, Senthil Kumar S, White AR, Mender I, Fuller C, Chow LML, Fouladi M, Shay JW, Drissi R. Induced Telomere Damage to Treat Telomerase Expressing Therapy-Resistant Pediatric Brain Tumors. Mol Cancer Ther 2018; 17:1504-1514. [PMID: 29654065 DOI: 10.1158/1535-7163.mct-17-0792] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 01/03/2018] [Accepted: 03/15/2018] [Indexed: 11/16/2022]
Abstract
Brain tumors remain the leading cause of cancer-related deaths in children and often are associated with long-term sequelae among survivors of current therapies. Hence, there is an urgent need to identify actionable targets and to develop more effective therapies. Telomerase and telomeres play important roles in cancer, representing attractive therapeutic targets to treat children with poor-prognosis brain tumors such as diffuse intrinsic pontine glioma (DIPG), high-grade glioma (HGG), and high-risk medulloblastoma. We have previously shown that DIPG, HGG, and medulloblastoma frequently express telomerase activity. Here, we show that the telomerase-dependent incorporation of 6-thio-2'deoxyguanosine (6-thio-dG), a telomerase substrate precursor analogue, into telomeres leads to telomere dysfunction-induced foci (TIF) along with extensive genomic DNA damage, cell growth inhibition, and cell death of primary stem-like cells derived from patients with DIPG, HGG, and medulloblastoma. Importantly, the effect of 6-thio-dG is persistent even after drug withdrawal. Treatment with 6-thio-dG elicits a sequential activation of ATR and ATM pathways and induces G2-M arrest. In vivo treatment of mice bearing medulloblastoma xenografts with 6-thio-dG delays tumor growth and increases in-tumor TIFs and apoptosis. Furthermore, 6-thio-dG crosses the blood-brain barrier and specifically targets tumor cells in an orthotopic mouse model of DIPG. Together, our findings suggest that 6-thio-dG is a promising novel approach to treat therapy-resistant telomerase-positive pediatric brain tumors. Mol Cancer Ther; 17(7); 1504-14. ©2018 AACR.
Collapse
Affiliation(s)
- Satarupa Sengupta
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Matthew Sobo
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Kyungwoo Lee
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Shiva Senthil Kumar
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Angela R White
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Ilgen Mender
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Christine Fuller
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Lionel M L Chow
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Maryam Fouladi
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jerry W Shay
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Rachid Drissi
- Brain Tumor Center, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
| |
Collapse
|
132
|
Martin AM, Nirschl CJ, Polanczyk MJ, Bell WR, Nirschl TR, Harris-Bookman S, Phallen J, Hicks J, Martinez D, Ogurtsova A, Xu H, Sullivan LM, Meeker AK, Raabe EH, Cohen KJ, Eberhart CG, Burger PC, Santi M, Taube JM, Pardoll DM, Drake CG, Lim M. PD-L1 expression in medulloblastoma: an evaluation by subgroup. Oncotarget 2018; 9:19177-19191. [PMID: 29721192 PMCID: PMC5922386 DOI: 10.18632/oncotarget.24951] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 03/13/2018] [Indexed: 01/01/2023] Open
Abstract
Background This study evaluated the expression of PD-L1 and markers of immune mediated resistance in human medulloblastoma (MB), the most common malignant pediatric brain tumor. Results Overall levels of PD-L1 in human MB were low; however, some cases demonstrated robust focal expression associated with increased immune infiltrates. The case with highest PD-L1 expression was a sonic hedgehog (SHH) MB. In cell lines, SHH MB, which are low-MYC expressing, demonstrated both constitutive and inducible expression of PD-L1 while those in Group 3/4 that expressed high levels of MYC had only inducible expression. In vitro, IFN-γ robustly stimulated the expression of PD-L1 in all cell lines while radiation induced variable expression. Forced high MYC expression did not significantly alter PD-L1. Methods Human MB tumor samples were evaluated for expression of PD-L1 and immune cell markers in relation to molecular subgroup assignment. PD-L1 expression was functionally analyzed under conditions of interferon gamma (IFN-γ), radiation, and MYC overexpression. Conclusions MB expresses low levels of PD-L1 facilitating immune escape. Importantly, TH1 cytokine stimulation appears to be the most potent inducer of PD-L1 expression in vitro suggesting that an inflamed tumor microenvironment is necessary for PD-1 pathway activation in this tumor.
Collapse
Affiliation(s)
- Allison M Martin
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Pediatric Oncology, Baltimore, MD, USA
| | - Christopher J Nirschl
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Cancer Immunology, Baltimore, MD, USA
| | - Magda J Polanczyk
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Pediatric Oncology, Baltimore, MD, USA
| | - W Robert Bell
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Thomas R Nirschl
- Johns Hopkins School of Medicine, Department of Pathobiology, Baltimore, MD, USA
| | - Sarah Harris-Bookman
- Johns Hopkins School of Medicine, Department of Ophthalmology, Baltimore, MD, USA
| | - Jillian Phallen
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Cancer Biology, Baltimore, MD, USA
| | - Jessica Hicks
- Johns Hopkins School of Medicine, Department of Pathology, Division of Kidney and Urologic Pathology, Baltimore, MD, USA
| | - Daniel Martinez
- Children's Hospital of Philadelphia, Department of Pathology and Laboratory Medicine, Philadelphia, PA, USA
| | - Aleksandra Ogurtsova
- Johns Hopkins School of Medicine, Department of Dermatology, Division of Dermatologic Pathology and Oral Pathology, Baltimore, MD, USA
| | - Haiying Xu
- Johns Hopkins School of Medicine, Department of Dermatology, Division of Dermatologic Pathology and Oral Pathology, Baltimore, MD, USA
| | | | - Alan K Meeker
- Johns Hopkins School of Medicine, Department of Pathology, Division of Kidney and Urologic Pathology, Baltimore, MD, USA
| | - Eric H Raabe
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Pediatric Oncology, Baltimore, MD, USA.,Johns Hopkins School of Medicine, Department of Pathology, Division of Neuropathology, Baltimore, MD, USA
| | - Kenneth J Cohen
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Pediatric Oncology, Baltimore, MD, USA
| | - Charles G Eberhart
- Johns Hopkins School of Medicine, Department of Pathology, Division of Neuropathology, Baltimore, MD, USA
| | - Peter C Burger
- Johns Hopkins School of Medicine, Department of Pathology, Division of Neuropathology, Baltimore, MD, USA
| | - Mariarita Santi
- Children's Hospital of Philadelphia, Department of Pathology and Laboratory Medicine, Philadelphia, PA, USA
| | - Janis M Taube
- Johns Hopkins School of Medicine, Department of Dermatology, Division of Dermatologic Pathology and Oral Pathology, Baltimore, MD, USA
| | - Drew M Pardoll
- Johns Hopkins School of Medicine, Sidney Kimmel Cancer Center, Division of Cancer Immunology, Baltimore, MD, USA
| | - Charles G Drake
- Columbia University Medical Center, Division of Hematology/Oncology, New York, NY, USA
| | - Michael Lim
- Johns Hopkins School of Medicine, Department of Neurosurgery, Division of Neurosurgical Oncology, Baltimore, MD, USA
| |
Collapse
|
133
|
Chaturvedi NK, Kling MJ, Coulter DW, McGuire TR, Ray S, Kesherwani V, Joshi SS, Sharp JG. Improved therapy for medulloblastoma: targeting hedgehog and PI3K-mTOR signaling pathways in combination with chemotherapy. Oncotarget 2018; 9:16619-16633. [PMID: 29682173 PMCID: PMC5908274 DOI: 10.18632/oncotarget.24618] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/21/2018] [Indexed: 02/07/2023] Open
Abstract
Aberrant activation and interactions of hedgehog (HH) and PI3K/AKT/mTOR signaling pathways are frequently associated with high-risk medulloblastoma (MB). Thus, combined targeting of the HH and PI3K/AKT/mTOR pathways could be a viable therapeutic strategy to treat high-risk patients. Therefore, we investigated the anti-MB efficacies of combined HH inhibitor Vismodegib and PI3K-mTOR dual-inhibitor BEZ235 together or combined individually with cisplatin against high-risk MB. Using non-MYC- and MYC-amplified cell lines, and a xenograft mouse model, the in vitro and in vivo efficacies of these therapies on cell growth/survival and associated molecular mechanism(s) were investigated. Results showed that combined treatment of Vismodegib and BEZ235 together, or with cisplatin, significantly decreased MB cell growth/survival in a dose-dependent-fashion. Corresponding changes in the expression of targeted molecules following therapy were observed. Results demonstrated that inhibitors not only suppressed MB cell growth/survival when combined, but also significantly enhanced cisplatin-mediated cytotoxicity. Of these combinations, BEZ235 exhibited a significantly greater efficacy in enhancing cisplatin-mediated MB cytotoxicity. Results also demonstrated that the MYC-amplified MB lines showed a higher sensitivity to combined therapies compared to non-MYC-amplified cell lines. Therefore, we tested the efficacy of combined approaches against MYC-amplified MB growing in NSG mice. In vivo results showed that combination of Vismodegib and BEZ235 or their combination with cisplatin, significantly delayed MB tumor growth and increased survival of xenografted mice by targeting HH and mTOR pathways. Thus, our studies lay a foundation for translating these combined therapeutic strategies to the clinical setting to determine their efficacies in high-risk MB patients.
Collapse
Affiliation(s)
- Nagendra K Chaturvedi
- Departments of Pediatrics, Hematology and Oncology, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - Matthew J Kling
- Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - Don W Coulter
- Departments of Pediatrics, Hematology and Oncology, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - Timothy R McGuire
- Pharmacy Practice, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - Sutapa Ray
- Departments of Pediatrics, Hematology and Oncology, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - Varun Kesherwani
- Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - Shantaram S Joshi
- Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 69198, USA
| | - J Graham Sharp
- Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 69198, USA
| |
Collapse
|
134
|
Laneve P, Po A, Favia A, Legnini I, Alfano V, Rea J, Di Carlo V, Bevilacqua V, Miele E, Mastronuzzi A, Carai A, Locatelli F, Bozzoni I, Ferretti E, Caffarelli E. The long noncoding RNA linc-NeD125 controls the expression of medulloblastoma driver genes by microRNA sponge activity. Oncotarget 2018; 8:31003-31015. [PMID: 28415684 PMCID: PMC5458184 DOI: 10.18632/oncotarget.16049] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/27/2017] [Indexed: 01/24/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) are major regulators of physiological and disease-related gene expression, particularly in the central nervous system. Dysregulated lncRNA expression has been documented in several human cancers, and their tissue-specificity makes them attractive candidates as diagnostic/prognostic biomarkers and/or therapeutic agents. Here we show that linc-NeD125, which we previously characterized as a neuronal-induced lncRNA, is significantly overexpressed in Group 4 medulloblastomas (G4 MBs), the largest and least well characterized molecular MB subgroup. Mechanistically, linc-NeD125 is able to recruit the miRNA-induced silencing complex (miRISC) and to directly bind the microRNAs miR-19a-3p, miR-19b-3p and miR-106a-5p. Functionally, linc-NeD125 acts as a competing endogenous RNA (ceRNA) that, sequestering the three miRNAs, leads to de-repression of their targets CDK6, MYCN, SNCAIP, and KDM6A, which are major driver genes of G4 MB. Accordingly, linc-NeD125 downregulation reduces G4 cell proliferation. Moreover, we also provide evidence that linc-NeD125 ectopic expression in the aggressive Group 3 MB cells attenuates their proliferation, migration and invasion.This study unveils the first lncRNA-based ceRNA network in central nervous system tumours and provides a novel molecular circuit underlying the enigmatic Group 4 medulloblastoma.
Collapse
Affiliation(s)
- Pietro Laneve
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy
| | - Agnese Po
- Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - Annarita Favia
- Institute of Molecular Biology and Pathology, National Research Council, 00185 Rome, Italy
| | - Ivano Legnini
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy
| | - Vincenzo Alfano
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy.,Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - Jessica Rea
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy
| | - Valerio Di Carlo
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy.,Present addresses: Center for Genomic Regulation, 08003 Barcelona, Spain
| | - Valeria Bevilacqua
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy.,Present addresses: Virology Program, INGM-Istituto Nazionale di Genetica Molecolare, 20122 Milan, Italy
| | - Evelina Miele
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy.,Present addresses: Department of Hematology/Oncology and Stem Cell Transplantation, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| | - Angela Mastronuzzi
- Department of Hematology/Oncology and Stem Cell Transplantation, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| | - Andrea Carai
- Department of Neuroscience and Neurorehabilitation, Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| | - Franco Locatelli
- Department of Hematology/Oncology and Stem Cell Transplantation, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy.,University of Pavia, 27100 Pavia, Italy
| | - Irene Bozzoni
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy.,Institute of Molecular Biology and Pathology, National Research Council, 00185 Rome, Italy.,Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy.,Institute Pasteur Fondazione Cenci-Bolognetti, Sapienza University of Rome, 00185 Rome, Italy
| | - Elisabetta Ferretti
- Department of Experimental Medicine Sapienza University of Rome, 00161 Rome, Italy.,Neuromed Institute, 86077 Pozzilli, Italy
| | - Elisa Caffarelli
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy.,Institute of Molecular Biology and Pathology, National Research Council, 00185 Rome, Italy
| |
Collapse
|
135
|
Itch/β-arrestin2-dependent non-proteolytic ubiquitylation of SuFu controls Hedgehog signalling and medulloblastoma tumorigenesis. Nat Commun 2018. [PMID: 29515120 PMCID: PMC5841288 DOI: 10.1038/s41467-018-03339-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Suppressor of Fused (SuFu), a tumour suppressor mutated in medulloblastoma, is a central player of Hh signalling, a pathway crucial for development and deregulated in cancer. Although the control of Gli transcription factors by SuFu is critical in Hh signalling, our understanding of the mechanism regulating this key event remains limited. Here, we show that the Itch/β-arrestin2 complex binds SuFu and induces its Lys63-linked polyubiquitylation without affecting its stability. This process increases the association of SuFu with Gli3, promoting the conversion of Gli3 into a repressor, which keeps Hh signalling off. Activation of Hh signalling antagonises the Itch-dependent polyubiquitylation of SuFu. Notably, different SuFu mutations occurring in medulloblastoma patients are insensitive to Itch activity, thus leading to deregulated Hh signalling and enhancing medulloblastoma cell growth. Our findings uncover mechanisms controlling the tumour suppressive functions of SuFu and reveal that their alterations are implicated in medulloblastoma tumorigenesis. SuFu is a tumour suppressor in medulloblastoma and regulates Gli proteins in the Sonic Hedgehog pathway; however, the molecular mechanisms behind this regulation are unclear. Here, the authors show that the Itch/β-arrestin2 complex binds and ubiquitylates SuFu, facilitating the interaction with Gli3 and its conversion into the repressive form, thus counteracting medulloblastoma formation.
Collapse
|
136
|
Ray S, Coulter DW, Gray SD, Sughroue JA, Roychoudhury S, McIntyre EM, Chaturvedi NK, Bhakat KK, Joshi SS, McGuire TR, Sharp JG. Suppression of STAT3 NH 2 -terminal domain chemosensitizes medulloblastoma cells by activation of protein inhibitor of activated STAT3 via de-repression by microRNA-21. Mol Carcinog 2018; 57:536-548. [PMID: 29280516 DOI: 10.1002/mc.22778] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 12/22/2017] [Indexed: 12/11/2022]
Abstract
Medulloblastoma (MB) is a malignant pediatric brain tumor with poor prognosis. Signal transducers and activators of transcription-3 (STAT3) is constitutively activated in MB where it functions as an oncoprotein, mediating cancer progression and metastasis. Here, we have delineated the functional role of activated STAT3 in MB, by using a cell permeable STAT3-NH2 terminal domain inhibitor (S3-NTDi) that specifically perturbs the structure/function of STAT3. We have implemented several biochemical experiments using human MB tumor microarray (TMA) and pediatric MB cell lines, derived from high-risk SHH-TP53-mutated and MYC-amplified Non-WNT/SHH tumors. Treatment of MB cells with S3-NTDi leads to growth inhibition, cell cycle arrest, and apoptosis. S3-NTDi downregulated expression of STAT3 target genes, delayed migration of MB cells, attenuated epithelial-mesenchymal transition (EMT) marker expressions and reduced cancer stem-cell associated protein expressions in MB-spheres. To elucidate mechanisms, we showed that S3-NTDi induce expression of pro-apoptotic gene, C/EBP-homologous protein (CHOP), and decrease association of STAT3 to the proximal promoter of CCND1 and BCL2. Of note, S3-NTDi downregulated microRNA-21, which in turn, de-repressed Protein Inhibitor of Activated STAT3 (PIAS3), a negative regulator of STAT3 signaling pathway. Furthermore, combination therapy with S3-NTDi and cisplatin significantly decreased highly aggressive MYC-amplified MB cell growth and induced apoptosis by downregulating STAT3 regulated proliferation and anti-apoptotic gene expression. Together, our results revealed an important role of STAT3 in regulating MB pathogenesis. Disruption of this pathway with S3-NTDi, therefore, may serves as a promising candidate for targeted MB therapy by enhancing chemosensitivity of MB cells and potentially improving outcomes in high-risk patients.
Collapse
Affiliation(s)
- Sutapa Ray
- Department of Pediatrics, Hematology and Oncology Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Don W Coulter
- Department of Pediatrics, Hematology and Oncology Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Shawn D Gray
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jason A Sughroue
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska
| | - Shrabasti Roychoudhury
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska
| | - Erin M McIntyre
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska
| | - Nagendra K Chaturvedi
- Department of Pediatrics, Hematology and Oncology Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kishor K Bhakat
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska
| | - Shantaram S Joshi
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska
| | - Timothy R McGuire
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska
| | - John G Sharp
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska
| |
Collapse
|
137
|
Zwergel C, Romanelli A, Stazi G, Besharat ZM, Catanzaro G, Tafani M, Valente S, Mai A. Application of Small Epigenetic Modulators in Pediatric Medulloblastoma. Front Pediatr 2018; 6:370. [PMID: 30560106 PMCID: PMC6286966 DOI: 10.3389/fped.2018.00370] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 11/12/2018] [Indexed: 12/17/2022] Open
Abstract
Medulloblastoma is one of the most frequent among pediatric brain tumors, and it has been classified in various subgroups. Some of them already benefit from quite good therapeutic options, whereas others urgently need novel therapeutic approaches. Epigenetic modulators have long been studied in various types of cancer. Within this review, we summarize the main preclinical studies regarding epigenetic targets (such as HDAC, SIRT, BET, EZH2, G9a, LSD1, and DNMT) inhibitors in medulloblastoma. Furthermore, we shed light on the increasing number of applications of drug combinations as well as hybrid compounds involving epigenetic mechanisms. Nevertheless, in the studies published so far, mainly un-specific or old modulators have been used, and the PKs (brain permeability) have not been well-evaluated. Thus, these findings should be considered as a starting point for further improvement and not as a final result.
Collapse
Affiliation(s)
- Clemens Zwergel
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | - Annalisa Romanelli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | - Giulia Stazi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | | | | | - Marco Tafani
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy.,Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
138
|
Sredni ST, Bailey AW, Suri A, Hashizume R, He X, Louis N, Gokirmak T, Piper DR, Watterson DM, Tomita T. Inhibition of polo-like kinase 4 (PLK4): a new therapeutic option for rhabdoid tumors and pediatric medulloblastoma. Oncotarget 2017; 8:111190-111212. [PMID: 29340047 PMCID: PMC5762315 DOI: 10.18632/oncotarget.22704] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 11/05/2017] [Indexed: 01/08/2023] Open
Abstract
Rhabdoid tumors (RT) are highly aggressive and vastly unresponsive embryonal tumors. They are the most common malignant CNS tumors in infants below 6 months of age. Medulloblastomas (MB) are embryonal tumors that arise in the cerebellum and are the most frequent pediatric malignant brain tumors. Despite the advances in recent years, especially for the most favorable molecular subtypes of MB, the prognosis of patients with embryonal tumors remains modest with treatment related toxicity dreadfully high. Therefore, new targeted therapies are needed. The polo-like kinase 4 (PLK4) is a critical regulator of centriole duplication and consequently, mitotic progression. We previously established that PLK4 is overexpressed in RT and MB. We also demonstrated that inhibiting PLK4 with a small molecule inhibitor resulted in impairment of proliferation, survival, migration and invasion of RT cells. Here, we showed in MB the same effects that we previously described for RT. We also demonstrated that PLK4 inhibition induced apoptosis, senescence and polyploidy in RT and MB cells, thereby increasing the susceptibility of cancer cells to DNA-damaging agents. In order to test the hypothesis that PLK4 is a CNS druggable target, we demonstrated efficacy with oral administration to an orthotropic xenograft model. Based on these results, we postulate that targeting PLK4 with small-molecule inhibitors could be a novel strategy for the treatment of RT and MB and that PLK4 inhibitors (PLK4i) might be promising agents to be used solo or in combination with cytotoxic agents.
Collapse
Affiliation(s)
- Simone Treiger Sredni
- Ann and Robert H. Lurie Children’s Hospital of Chicago, Division of Pediatric Neurosurgery, Chicago, IL 60611, USA
- Northwestern University, Feinberg School of Medicine, Department of Surgery, Chicago, IL 60611, USA
- Stanley Manne Children’s Research Institute, Cancer Biology and Epigenomics, Chicago, IL 60614, USA
| | - Anders W. Bailey
- Ann and Robert H. Lurie Children’s Hospital of Chicago, Division of Pediatric Neurosurgery, Chicago, IL 60611, USA
- Stanley Manne Children’s Research Institute, Cancer Biology and Epigenomics, Chicago, IL 60614, USA
| | - Amreena Suri
- Ann and Robert H. Lurie Children’s Hospital of Chicago, Division of Pediatric Neurosurgery, Chicago, IL 60611, USA
- Stanley Manne Children’s Research Institute, Cancer Biology and Epigenomics, Chicago, IL 60614, USA
| | - Rintaro Hashizume
- Northwestern University, Feinberg School of Medicine, Department of Neurological Surgery, Chicago, IL 60611, USA
| | - Xingyao He
- Northwestern University, Feinberg School of Medicine, Department of Neurological Surgery, Chicago, IL 60611, USA
| | - Nundia Louis
- Northwestern University, Feinberg School of Medicine, Department of Neurological Surgery, Chicago, IL 60611, USA
| | - Tufan Gokirmak
- Thermo Fisher Scientific, Research and Development, Biosciences Division, Carlsbad, CA 92008, USA
| | - David R. Piper
- Thermo Fisher Scientific, Research and Development, Biosciences Division, Carlsbad, CA 92008, USA
| | - Daniel M. Watterson
- Northwestern University, Feinberg School of Medicine, Department of Pharmacology, Chicago, IL 60611, USA
| | - Tadanori Tomita
- Ann and Robert H. Lurie Children’s Hospital of Chicago, Division of Pediatric Neurosurgery, Chicago, IL 60611, USA
- Northwestern University, Feinberg School of Medicine, Department of Surgery, Chicago, IL 60611, USA
| |
Collapse
|
139
|
Sankar S, Patterson E, Lewis EM, Waller LE, Tong C, Dearborn J, Wozniak D, Rubin JB, Kroll KL. Geminin deficiency enhances survival in a murine medulloblastoma model by inducing apoptosis of preneoplastic granule neuron precursors. Genes Cancer 2017; 8:725-744. [PMID: 29234490 PMCID: PMC5724806 DOI: 10.18632/genesandcancer.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Medulloblastoma is the most common malignant brain cancer of childhood. Further understanding of tumorigenic mechanisms may define new therapeutic targets. Geminin maintains genome fidelity by controlling re-initiation of DNA replication within a cell cycle. In some contexts, Geminin inhibition induces cancer-selective cell cycle arrest and apoptosis and/or sensitizes cancer cells to Topoisomerase IIα inhibitors such as etoposide, which is used in combination chemotherapies for medulloblastoma. However, Geminin's potential role in medulloblastoma tumorigenesis remained undefined. Here, we found that Geminin is highly expressed in human and mouse medulloblastomas and in murine granule neuron precursor (GNP) cells during cerebellar development. Conditional Geminin loss significantly enhanced survival in the SmoA1 mouse medulloblastoma model. Geminin loss in this model also reduced numbers of preneoplastic GNPs persisting at one postnatal month, while at two postnatal weeks these cells exhibited an elevated DNA damage response and apoptosis. Geminin knockdown likewise impaired human medulloblastoma cell growth, activating G2 checkpoint and DNA damage response pathways, triggering spontaneous apoptosis, and enhancing G2 accumulation of cells in response to etoposide treatment. Together, these data suggest preneoplastic and cancer cell-selective roles for Geminin in medulloblastoma, and suggest that targeting Geminin may impair tumor growth and enhance responsiveness to Topoisomerase IIα-directed chemotherapies.
Collapse
Affiliation(s)
- Savita Sankar
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Ethan Patterson
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Emily M Lewis
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Laura E Waller
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Caili Tong
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Joshua Dearborn
- Department of Psychiatry, Washington University School of Medicine, Saint Louis, MO, USA
| | - David Wozniak
- Department of Psychiatry, Washington University School of Medicine, Saint Louis, MO, USA
| | - Joshua B Rubin
- Department of Pediatrics, Washington University School of Medicine, Saint Louis, MO, USA
| | - Kristen L Kroll
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| |
Collapse
|
140
|
Neumann JE, Swartling FJ, Schüller U. Medulloblastoma: experimental models and reality. Acta Neuropathol 2017; 134:679-689. [PMID: 28725965 DOI: 10.1007/s00401-017-1753-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 06/27/2017] [Accepted: 07/16/2017] [Indexed: 12/11/2022]
Abstract
Medulloblastoma is the most frequent malignant brain tumor in childhood, but it may also affect infants, adolescents, and young adults. Recent advances in the understanding of the disease have shed light on molecular and clinical heterogeneity, which is now reflected in the updated WHO classification of brain tumors. At the same time, it is well accepted that preclinical research and clinical trials have to be subgroup-specific. Hence, valid models have to be generated specifically for every medulloblastoma subgroup to properly mimic molecular fingerprints, clinical features, and responsiveness to targeted therapies. This review summarizes the availability of experimental medulloblastoma models with a particular focus on how well these models reflect the actual disease subgroup. We further describe technical advantages and disadvantages of the models and finally point out how some models have successfully been used to introduce new drugs and why some medulloblastoma subgroups are extraordinary difficult to model.
Collapse
Affiliation(s)
- Julia E Neumann
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Fredrik J Swartling
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Ulrich Schüller
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
- Research Institute Children's Cancer Center, Martinistrasse 52, 20251, Hamburg, Germany.
| |
Collapse
|
141
|
Bonfim-Silva R, Ferreira Melo FU, Thomé CH, Abraham KJ, De Souza FAL, Ramalho FS, Machado HR, De Oliveira RS, Cardoso AA, Covas DT, Fontes AM. Functional analysis of HOXA10 and HOXB4 in human medulloblastoma cell lines. Int J Oncol 2017; 51:1929-1940. [PMID: 29039487 DOI: 10.3892/ijo.2017.4151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 09/28/2017] [Indexed: 11/06/2022] Open
Abstract
Medulloblastoma (MB) is a malignant childhood brain tumor which at molecular level is classified into at least four major subtypes: WNT, SHH, group C and group D differing in response to treatment. Previous studies have associated changes in expression levels and activation of certain HOX genes with MB development. In the present study, we investigate the role of HOX genes in two attributes acquired by tumor cells: migration and proliferation potential, as well as, in vivo tumorigenic potential. We analyzed UW402, UW473, DAOY and ONS-76 human pediatric MB cell lines and cerebellum primary cultures. Two-color microarray-based gene expression analysis was used to identify differentially expressed HOX genes. Among the various HOX genes significantly overexpressed in DAOY and ONS-76 cell lines compared to UW402 and UW473 cell lines, HOXA10 and HOXB4 were selected for further analysis. The expression levels of these HOX genes were validated by real-time PCR. A mouse model was used to study the effect of the HOXA10 and HOXB4 genes on the in vivo tumorigenic potential and the in vitro proliferative and migration potential of MB cell lines. Our results show that the inhibition of HOXA10 in DAOY cell line led to increased in vitro cell migration while in vitro cell proliferation or in vivo tumorigenic potential were unaffected. We also observed that induced expression of HOXB4 in the UW473 cell line significantly reduced in vitro cell proliferation and migration capability of UW473 cells with no effect on the in vivo tumorigenicity. This suggests that HOXA10 plays a role in migration events and the HOXB4 gene is involved in proliferation and migration processes of medulloblastoma cells, however, it appears that these genes are not essential for the tumorigenic process of these cells.
Collapse
Affiliation(s)
- Ricardo Bonfim-Silva
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Fernanda Ursoli Ferreira Melo
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Carolina Hassibe Thomé
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Kuruvilla Joseph Abraham
- Department of Pediatrics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Fábio Augusto Labre De Souza
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Silva Ramalho
- Department of Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Hélio Rubens Machado
- Division of Pediatric Neurosurgery of the Department of Surgery and Anatomy, University Hospital of Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Ricardo Santos De Oliveira
- Division of Pediatric Neurosurgery of the Department of Surgery and Anatomy, University Hospital of Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Angelo A Cardoso
- Center for Gene Therapy, City of Hope Alpha Stem Cell Clinic, Duarte, CA 91010, USA
| | - Dimas Tadeu Covas
- Department of Internal Medicine, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Aparecida Maria Fontes
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre 14049-900, Ribeirão Preto, São Paulo, Brazil
| |
Collapse
|
142
|
Restoration of miR-30a expression inhibits growth, tumorigenicity of medulloblastoma cells accompanied by autophagy inhibition. Biochem Biophys Res Commun 2017; 491:946-952. [DOI: 10.1016/j.bbrc.2017.07.140] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 11/22/2022]
|
143
|
Woolman M, Ferry I, Kuzan-Fischer CM, Wu M, Zou J, Kiyota T, Isik S, Dara D, Aman A, Das S, Taylor MD, Rutka JT, Ginsberg HJ, Zarrine-Afsar A. Rapid determination of medulloblastoma subgroup affiliation with mass spectrometry using a handheld picosecond infrared laser desorption probe. Chem Sci 2017; 8:6508-6519. [PMID: 28989676 PMCID: PMC5628578 DOI: 10.1039/c7sc01974b] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 07/21/2017] [Indexed: 12/25/2022] Open
Abstract
Medulloblastoma (MB), the most prevalent malignant childhood brain tumour, consists of at least 4 distinct subgroups each of which possesses a unique survival rate and response to treatment. To rapidly determine MB subgroup affiliation in a manner that would be actionable during surgery, we subjected murine xenograft tumours of two MB subgroups (SHH and Group 3) to Mass Spectrometry (MS) profiling using a handheld Picosecond InfraRed Laser (PIRL) desorption probe and interface developed by our group. This platform provides real time MS profiles of tissue based on laser desorbed lipids and small molecules with only 5-10 seconds of sampling. PIRL-MS analysis of ex vivo MB tumours offered a 98% success rate in subgroup determination, observed over 194 PIRL-MS datasets collected from 19 independent tumours (∼10 repetitions each) utilizing 6 different established MB cell lines. Robustness was verified by a 5%-leave-out-and-remodel test. PIRL ablated tissue material was collected on a filter paper and subjected to high resolution LC-MS to provide ion identity assignments for the m/z values that contribute most to the statistical discrimination between SHH and Group 3 MB. Based on this analysis, rapid classification of MB with PIRL-MS utilizes a variety of fatty acid chains, glycerophosphates, glycerophosphoglycerols and glycerophosphocholines rapidly extracted from the tumours. In this work, we provide evidence that 5-10 seconds of sampling from ex vivo MB tissue with PIRL-MS can allow robust tumour subgroup classification, and have identified several biomarker ions responsible for the statistical discrimination of MB Group 3 and the SHH subgroup. The existing PIRL-MS platform used herein offers capabilities for future in vivo use.
Collapse
Affiliation(s)
- Michael Woolman
- Techna Institute for the Advancement of Technology for Health , University Health Network , 100 College Street , Toronto , ON M5G 1P5 , Canada .
- Department of Medical Biophysics , University of Toronto , 101 College Street , Toronto , ON M5G 1L7 , Canada
| | - Isabelle Ferry
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
- Arthur and Sonia Labatt Brain Tumor Research Centre , The Hospital for Sick Children , Toronto , ON M5G 1X8 , Canada
- Developmental & Stem Cell Biology Program , The Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
| | - Claudia M Kuzan-Fischer
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
- Arthur and Sonia Labatt Brain Tumor Research Centre , The Hospital for Sick Children , Toronto , ON M5G 1X8 , Canada
- Developmental & Stem Cell Biology Program , The Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
| | - Megan Wu
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
- Arthur and Sonia Labatt Brain Tumor Research Centre , The Hospital for Sick Children , Toronto , ON M5G 1X8 , Canada
- Developmental & Stem Cell Biology Program , The Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
| | - Jing Zou
- Techna Institute for the Advancement of Technology for Health , University Health Network , 100 College Street , Toronto , ON M5G 1P5 , Canada .
| | - Taira Kiyota
- Drug Discovery Program , Ontario Institute for Cancer Research , 661 University Avenue , Toronto , ON M5G 0A3 , Canada
| | - Semra Isik
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
| | - Delaram Dara
- Techna Institute for the Advancement of Technology for Health , University Health Network , 100 College Street , Toronto , ON M5G 1P5 , Canada .
| | - Ahmed Aman
- Drug Discovery Program , Ontario Institute for Cancer Research , 661 University Avenue , Toronto , ON M5G 0A3 , Canada
| | - Sunit Das
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
- Department of Surgery , University of Toronto , 149 College Street , Toronto , ON M5T 1P5 , Canada
- Keenan Research Center for Biomedical Science , The Li Ka Shing Knowledge Institute , St. Michael's Hospital , 30 Bond Street , Toronto , ON M5B 1W8 , Canada
| | - Michael D Taylor
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
- Department of Surgery , University of Toronto , 149 College Street , Toronto , ON M5T 1P5 , Canada
- Arthur and Sonia Labatt Brain Tumor Research Centre , The Hospital for Sick Children , Toronto , ON M5G 1X8 , Canada
- Developmental & Stem Cell Biology Program , The Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
| | - James T Rutka
- Peter Gilgan Centre for Research and Learning , Hospital for Sick Children , 686 Bay Street , Toronto , ON M5G 0A4 , Canada
- Department of Surgery , University of Toronto , 149 College Street , Toronto , ON M5T 1P5 , Canada
- Arthur and Sonia Labatt Brain Tumor Research Centre , The Hospital for Sick Children , Toronto , ON M5G 1X8 , Canada
| | - Howard J Ginsberg
- Techna Institute for the Advancement of Technology for Health , University Health Network , 100 College Street , Toronto , ON M5G 1P5 , Canada .
- Department of Surgery , University of Toronto , 149 College Street , Toronto , ON M5T 1P5 , Canada
- Keenan Research Center for Biomedical Science , The Li Ka Shing Knowledge Institute , St. Michael's Hospital , 30 Bond Street , Toronto , ON M5B 1W8 , Canada
- Institute of Biomaterials and Biomedical Engineering , University of Toronto , 164 College Street , Toronto , ON M5S 3G9 , Canada
| | - Arash Zarrine-Afsar
- Techna Institute for the Advancement of Technology for Health , University Health Network , 100 College Street , Toronto , ON M5G 1P5 , Canada .
- Department of Medical Biophysics , University of Toronto , 101 College Street , Toronto , ON M5G 1L7 , Canada
- Department of Surgery , University of Toronto , 149 College Street , Toronto , ON M5T 1P5 , Canada
- Keenan Research Center for Biomedical Science , The Li Ka Shing Knowledge Institute , St. Michael's Hospital , 30 Bond Street , Toronto , ON M5B 1W8 , Canada
| |
Collapse
|
144
|
Phi JH, Choi SA, Kwak PA, Lee JY, Wang KC, Hwang DW, Kim SK. Panobinostat, a histone deacetylase inhibitor, suppresses leptomeningeal seeding in a medulloblastoma animal model. Oncotarget 2017; 8:56747-56757. [PMID: 28915627 PMCID: PMC5593598 DOI: 10.18632/oncotarget.18132] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 04/25/2017] [Indexed: 11/29/2022] Open
Abstract
Leptomeningeal seeding is a strong negative prognostic factor for medulloblastoma (MB). The mechanism of leptomeningeal seeding is unclear but may involve epigenetic regulation. In this study, we evaluated the feasibility of a histone deacetylase (HDAC) inhibitor, panobinostat, in the suppression of MB leptomeningeal seeding. Panobinostat decreased the cell viability and proliferation, inducing cell cycle arrest and apoptosis in MB cell lines. The migration and adhesion capabilities were significantly decreased. Panobinostat effectively down-regulated protein expression of CCND1 and ID3 which has been associated with leptomeningeal seeding of MB. After panobinostat treatment, neurophil-like cellular processes developed and expression of synaptophysin and NeuroD1 was increased, indicating neuronal differentiation. In MB leptomeningeal seeding in vivo model, the panobinostat-treated group showed significantly decreased spinal leptomeningeal seeding and a survival benefit. The findings demonstrate that panobinostat suppresses MB leptomeningeal seeding through the down-regulation of ID3 and the induction of neuronal differentiation. An HDAC inhibitor might be a potent treatment option for the treatment of MB patients with leptomeningeal seeding.
Collapse
Affiliation(s)
- Ji Hoon Phi
- Division of Pediatric Neurosurgery, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Adolescent Cancer Center, Seoul National University Cancer Hospital, Seoul, Korea.,Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Ah Choi
- Division of Pediatric Neurosurgery, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Adolescent Cancer Center, Seoul National University Cancer Hospital, Seoul, Korea
| | - Pil Ae Kwak
- Division of Pediatric Neurosurgery, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Adolescent Cancer Center, Seoul National University Cancer Hospital, Seoul, Korea
| | - Ji Yeoun Lee
- Division of Pediatric Neurosurgery, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Department of Anatomy, Seoul National University Hospital, Seoul, Korea
| | - Kyu-Chang Wang
- Division of Pediatric Neurosurgery, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Do Won Hwang
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Seung-Ki Kim
- Division of Pediatric Neurosurgery, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Adolescent Cancer Center, Seoul National University Cancer Hospital, Seoul, Korea.,Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| |
Collapse
|
145
|
Liu H, Sun Q, Sun Y, Zhang J, Yuan H, Pang S, Qi X, Wang H, Zhang M, Zhang H, Yu C, Gu C. MELK and EZH2 Cooperate to Regulate Medulloblastoma Cancer Stem-like Cell Proliferation and Differentiation. Mol Cancer Res 2017; 15:1275-1286. [PMID: 28536141 DOI: 10.1158/1541-7786.mcr-17-0105] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/11/2017] [Accepted: 05/18/2017] [Indexed: 11/16/2022]
Abstract
Medulloblastoma is the most common malignant brain tumor in children. Although accumulated research has suggested that cancer stem-like cells play a key role in medulloblastoma tumorigenesis, the specific molecular mechanism regarding proliferation remains elusive. Here, we reported more abundant expression of maternal embryonic leucine-zipper kinase (MELK) and enhancer of zeste homolog 2 (EZH2) in medulloblastoma stem-like cells than in neural stem cells and the interaction between the two proteins could mediate the self-renewal of sonic hedgehog subtype medulloblastoma. In human medulloblastoma, extensive nodularity and large-cell/anaplastic subgroups differed according to the staining levels of MELK and EZH2 from the other two subgroups. The proportion of MELK- or EZH2-positive staining status could be considered as a potential indicator for survival. Mechanistically, MELK bound to and phosphorylated EZH2, and its methylation was induced by EZH2 in medulloblastoma, which could regulate the proliferation of cancer stem-like cells. In xenografts, loss of MELK or EZH2 attenuated medulloblastoma stem-like cell-derived tumor growth and promoted differentiation. These findings indicate that MELK-induced phosphorylation and EZH2-mediated methylation in MELK/EZH2 pathway are essential for medulloblastoma stem-like cell-derived tumor proliferation, thereby identifying a potential therapeutic strategy for these patients.Implications: This study demonstrates that the interaction occurring between MELK and EZH2 promotes self-proliferation and stemness, thus representing an attractive therapeutic target and potential candidate for diagnosis of medulloblastoma. Mol Cancer Res; 15(9); 1275-86. ©2017 AACR.
Collapse
Affiliation(s)
- Hailong Liu
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China
| | - Qianwen Sun
- Department of Neurology, Qilu Hospital Shandong University, Jinan, P.R. China
| | - Youliang Sun
- School of Basic Medical Science, Capital Medical University, Beijing, P.R. China
| | - Junping Zhang
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China
| | - Hongyu Yuan
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China
| | | | - Xueling Qi
- Department of Pathology, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China
| | - Haoran Wang
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China
| | - Mingshan Zhang
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China
| | - Hongwei Zhang
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China
| | - Chunjiang Yu
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China.
| | - Chunyu Gu
- Department of Neurosurgery, Sanbo Brain Hospital Capital Medical University, Beijing, P.R. China.
| |
Collapse
|
146
|
Synergistic anti-cancer effects of epigenetic drugs on medulloblastoma cells. Cell Oncol (Dordr) 2017; 40:263-279. [PMID: 28429280 DOI: 10.1007/s13402-017-0319-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2017] [Indexed: 12/23/2022] Open
Abstract
PURPOSE Medulloblastomas are aggressive brain malignancies. While considerable progress has been made in the treatment of medulloblastoma patients with respect to overall survival, these patients are still at risk of developing neurologic and cognitive deficits as a result of anti-cancer therapies. It is hypothesized that targeted molecular therapies represent a better treatment option for medulloblastoma patients. Therefore, the aim of the present study was to test a panel of epigenetic drugs for their effect on medulloblastoma cells under mild hypoxic conditions that reflect the physiological concentrations of oxygen in the brain. METHODS Protein levels of histone deacetylase 1 (HDAC1) and DNA methyltransferase 1 (DNMT1) in medulloblastoma-derived cells (Daoy and D283 Med), as well as in developing and differentiated brain cells, were determined and compared. Class I and II histone deacetylase inhibitors (HDACi) and a DNMT inhibitor, 5-aza-2'-deoxycytidine (5-aza-dC), were applied to Daoy and D283 Med cells, and their effects were studied using viability, apoptosis and cancer sphere assays. RESULTS We found that in HDAC1 and DNMT1 overexpressing medulloblastoma-derived cells, cell death was induced under various epigenetic drug conditions tested. At low HDACi concentrations, however, a pro-proliferative effect was observed. Parthenolide, a drug that affects cancer stem cells, was found to be efficient in inducing cell death in both cell lines tested. In contrast, we found that Daoy cells were more resistant to 5-aza-dC than D283 Med cells. When suberoylanilide hydroxamic acid (SAHA) and parthenolide were individually applied to both cell lines in combination with 5-aza-dC, a synergistic effect on cell survival was observed. CONCLUSIONS Our current results suggest that the application of HDACi in combination with drugs that target DNMT may represent a promising option for the treatment of medulloblastoma.
Collapse
|
147
|
Sandén E, Dyberg C, Krona C, Gallo-Oller G, Olsen TK, Enríquez Pérez J, Wickström M, Estekizadeh A, Kool M, Visse E, Ekström TJ, Siesjö P, Johnsen JI, Darabi A. Establishment and characterization of an orthotopic patient-derived Group 3 medulloblastoma model for preclinical drug evaluation. Sci Rep 2017; 7:46366. [PMID: 28417956 PMCID: PMC5394470 DOI: 10.1038/srep46366] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 03/15/2017] [Indexed: 12/25/2022] Open
Abstract
Medulloblastomas comprise a heterogeneous group of tumours and can be subdivided into four molecular subgroups (WNT, SHH, Group 3 and Group 4) with distinct prognosis, biological behaviour and implications for targeted therapies. Few experimental models exist of the aggressive and poorly characterized Group 3 tumours. In order to establish a reproducible transplantable Group 3 medulloblastoma model for preclinical therapeutic studies, we acquired a patient-derived tumour sphere culture and inoculated low-passage spheres into the cerebellums of NOD-scid mice. Mice developed symptoms of brain tumours with a latency of 17–18 weeks. Neurosphere cultures were re-established and serially transplanted for 3 generations, with a negative correlation between tumour latency and numbers of injected cells. Xenografts replicated the phenotype of the primary tumour, including high degree of clustering in DNA methylation analysis, high proliferation, expression of tumour markers, MYC amplification and elevated MYC expression, and sensitivity to the MYC inhibitor JQ1. Xenografts maintained maintained expression of tumour-derived VEGFA and stromal-derived COX-2. VEGFA, COX-2 and c-Myc are highly expressed in Group 3 compared to other medulloblastoma subgroups, suggesting that these molecules are relevant therapeutic targets in Group 3 medulloblastoma.
Collapse
Affiliation(s)
- Emma Sandén
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Neurosurgery, Lund, Sweden
| | - Cecilia Dyberg
- Karolinska Institutet, Department of Women´s and Children´s Health, Childhood Cancer Research Unit, Stockholm, Sweden
| | - Cecilia Krona
- Uppsala University, Department of Immunology, Genetics and Pathology, Uppsala, Sweden
| | - Gabriel Gallo-Oller
- Karolinska Institutet, Department of Women´s and Children´s Health, Childhood Cancer Research Unit, Stockholm, Sweden
| | - Thale Kristin Olsen
- Karolinska Institutet, Department of Women´s and Children´s Health, Childhood Cancer Research Unit, Stockholm, Sweden
| | - Julio Enríquez Pérez
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Neurosurgery, Lund, Sweden
| | - Malin Wickström
- Karolinska Institutet, Department of Women´s and Children´s Health, Childhood Cancer Research Unit, Stockholm, Sweden
| | - Atosa Estekizadeh
- Karolinska University Hospital, Solna, Center for Molecular Medicine, and Karolinska Institutet, Department of Clinical Neuroscience, Stockholm, Sweden
| | - Marcel Kool
- German Cancer Research Center DKFZ, Division of Pediatric Neurooncology, Heidelberg, Germany
| | - Edward Visse
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Neurosurgery, Lund, Sweden
| | - Tomas J Ekström
- Karolinska University Hospital, Solna, Center for Molecular Medicine, and Karolinska Institutet, Department of Clinical Neuroscience, Stockholm, Sweden
| | - Peter Siesjö
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Neurosurgery, Lund, Sweden.,Lund University, Skane University Hospital, Department of Clinical Sciences Lund, Neurosurgery, Lund, Sweden
| | - John Inge Johnsen
- Karolinska Institutet, Department of Women´s and Children´s Health, Childhood Cancer Research Unit, Stockholm, Sweden
| | - Anna Darabi
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Neurosurgery, Lund, Sweden
| |
Collapse
|
148
|
Chlapek P, Zitterbart K, Kren L, Filipova L, Sterba J, Veselska R. Uniformity under in vitro conditions: Changes in the phenotype of cancer cell lines derived from different medulloblastoma subgroups. PLoS One 2017; 12:e0172552. [PMID: 28231263 PMCID: PMC5322931 DOI: 10.1371/journal.pone.0172552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 02/06/2017] [Indexed: 11/18/2022] Open
Abstract
Medulloblastoma comprises four main subgroups (WNT, SHH, Group 3 and Group 4) originally defined by transcriptional profiling. In primary medulloblastoma tissues, these groups are thought to be distinguishable using the immunohistochemical detection of β-catenin, filamin A, GAB1 and YAP1 protein markers. To investigate the utility of these markers for in vitro studies using medulloblastoma cell lines, immunoblotting and indirect immunofluorescence were employed for the detection of β-catenin, filamin A, GAB1 and YAP1 in both DAOY and D283 Med reference cell lines and the panel of six medulloblastoma cell lines derived in our laboratory from the primary tumor tissues of known molecular subgroups. Immunohistochemical detection of these markers was performed on formalin-fixed paraffin-embedded tissue of the matching primary tumors. The results revealed substantial divergences between the primary tumor tissues and matching cell lines in the immunoreactivity pattern of medulloblastoma-subgroup-specific protein markers. Regardless of the molecular subgroup of the primary tumor, all six patient-derived medulloblastoma cell lines exhibited a uniform phenotype: immunofluorescence showed the nuclear localization of YAP1, accompanied by strong cytoplasmic positivity for β-catenin and filamin A, as well as weak positivity for GAB1. The same immunoreactivity pattern was also found in both DAOY and D283 Med reference medulloblastoma cell lines. Therefore, we can conclude that various medulloblastoma cell lines tend to exhibit the same characteristics of protein marker expression under standard in vitro conditions. Such a finding emphasizes the importance of the analyses of primary tumors in clinically oriented medulloblastoma research and the urgent need to develop in vitro models of improved clinical relevance, such as 3D cultures and organotypic slice cultures.
Collapse
Affiliation(s)
- Petr Chlapek
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Karel Zitterbart
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Leos Kren
- Department of Pathology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lenka Filipova
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jaroslav Sterba
- International Clinical Research Center, St. Anne’s University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Renata Veselska
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
- * E-mail:
| |
Collapse
|
149
|
Ivanov DP, Grabowska AM, Garnett MC. High-Throughput Spheroid Screens Using Volume, Resazurin Reduction, and Acid Phosphatase Activity. Methods Mol Biol 2017; 1601:43-59. [PMID: 28470516 DOI: 10.1007/978-1-4939-6960-9_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mainstream adoption of physiologically relevant three-dimensional models has been slow in the last 50 years due to long, manual protocols with poor reproducibility, high price, and closed commercial platforms. This chapter describes high-throughput, low-cost, open methods for spheroid viability assessment which use readily available reagents and open-source software to analyze spheroid volume, metabolism, and enzymatic activity. We provide two ImageJ macros for automated spheroid size determination-for both single images and images in stacks. We also share an Excel template spreadsheet allowing users to rapidly process spheroid size data, analyze plate uniformity (such as edge effects and systematic seeding errors), detect outliers, and calculate dose-response. The methods would be useful to researchers in preclinical and translational research planning to move away from simplistic monolayer studies and explore 3D spheroid screens for drug safety and efficacy without substantial investment in money or time.
Collapse
Affiliation(s)
- Delyan P Ivanov
- Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, NG7 2UH, UK.
| | - Anna M Grabowska
- Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, NG7 2UH, UK
| | | |
Collapse
|
150
|
Ivanov DP, Walker DA, Coyle B, Grabowska AM. Data on the number and frequency of scientific literature citations for established medulloblastoma cell lines. Data Brief 2016; 9:696-698. [PMID: 27812533 PMCID: PMC5079239 DOI: 10.1016/j.dib.2016.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/21/2016] [Accepted: 10/05/2016] [Indexed: 12/01/2022] Open
Abstract
This article collates information about the number of scientific articles mentioning each of the established medulloblastoma cell lines, derived through a systematic search of Web of Science, Scopus and Google Scholar in 2016. The data for each cell line have been presented as raw number of citations, percentage share of the total citations for each search engine and as an average percentage between the three search engines. In order to correct for the time since each cell line has been in use, the raw citation data have also been divided by the number of years since the derivation of each cell line. This is a supporting article for a review of in vitro models of medulloblastoma published in “in vitro models of medulloblastoma: choosing the right tool for the job” (D.P. Ivanov, D.A. Walker, B. Coyle, A.M. Grabowska, 2016) [1].
Collapse
Affiliation(s)
- D P Ivanov
- Cancer Biology, Division of Cancer and Stem cells, University of Nottingham, UK
| | - D A Walker
- Children׳s brain tumour research centre, University of Nottingham, UK
| | - B Coyle
- Children׳s brain tumour research centre, University of Nottingham, UK
| | - A M Grabowska
- Cancer Biology, Division of Cancer and Stem cells, University of Nottingham, UK
| |
Collapse
|