1
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de Nigris F, Meo C, Palinski W. Combination of Genomic Landsscape and 3D Culture Functional Assays Bridges Sarcoma Phenotype to Target and Immunotherapy. Cells 2023; 12:2204. [PMID: 37681936 PMCID: PMC10486752 DOI: 10.3390/cells12172204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/24/2023] [Accepted: 08/30/2023] [Indexed: 09/09/2023] Open
Abstract
Genomic-based precision medicine has not only improved tumour therapy but has also shown its weaknesses. Genomic profiling and mutation analysis have identified alterations that play a major role in sarcoma pathogenesis and evolution. However, they have not been sufficient in predicting tumour vulnerability and advancing treatment. The relative rarity of sarcomas and the genetic heterogeneity between subtypes also stand in the way of gaining statistically significant results from clinical trials. Personalized three-dimensional tumour models that reflect the specific histologic subtype are emerging as functional assays to test anticancer drugs, complementing genomic screening. Here, we provide an overview of current target therapy for sarcomas and discuss functional assays based on 3D models that, by recapitulating the molecular pathways and tumour microenvironment, may predict patient response to treatments. This approach opens new avenues to improve precision medicine when genomic and pathway alterations are not sufficient to guide the choice of the most promising treatment. Furthermore, we discuss the aspects of the 3D culture assays that need to be improved, such as the standardisation of growth conditions and the definition of in vitro responses that can be used as a cut-off for clinical implementation.
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Affiliation(s)
- Filomena de Nigris
- Department of Precision Medicine, School of Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy;
| | - Concetta Meo
- Department of Precision Medicine, School of Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy;
| | - Wulf Palinski
- Department of Medicine, University of California San Diego, La Jolla, CA 92037, USA;
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2
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Damerell V, Pepper MS, Prince S. Molecular mechanisms underpinning sarcomas and implications for current and future therapy. Signal Transduct Target Ther 2021; 6:246. [PMID: 34188019 PMCID: PMC8241855 DOI: 10.1038/s41392-021-00647-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 04/18/2021] [Accepted: 05/18/2021] [Indexed: 02/06/2023] Open
Abstract
Sarcomas are complex mesenchymal neoplasms with a poor prognosis. Their clinical management is highly challenging due to their heterogeneity and insensitivity to current treatments. Although there have been advances in understanding specific genomic alterations and genetic mutations driving sarcomagenesis, the underlying molecular mechanisms, which are likely to be unique for each sarcoma subtype, are not fully understood. This is in part due to a lack of consensus on the cells of origin, but there is now mounting evidence that they originate from mesenchymal stromal/stem cells (MSCs). To identify novel treatment strategies for sarcomas, research in recent years has adopted a mechanism-based search for molecular markers for targeted therapy which has included recapitulating sarcomagenesis using in vitro and in vivo MSC models. This review provides a comprehensive up to date overview of the molecular mechanisms that underpin sarcomagenesis, the contribution of MSCs to modelling sarcomagenesis in vivo, as well as novel topics such as the role of epithelial-to-mesenchymal-transition (EMT)/mesenchymal-to-epithelial-transition (MET) plasticity, exosomes, and microRNAs in sarcomagenesis. It also reviews current therapeutic options including ongoing pre-clinical and clinical studies for targeted sarcoma therapy and discusses new therapeutic avenues such as targeting recently identified molecular pathways and key transcription factors.
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Affiliation(s)
- Victoria Damerell
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | - Michael S Pepper
- Institute for Cellular and Molecular Medicine, Department of Immunology, SAMRC Extramural Unit for Stem Research and Therapy, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Sharon Prince
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa.
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3
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Abstract
The function of histone deacetylase 2 (HDAC2) in transcriptional regulation and its role in oncogenesis have been well established. Here we discuss a transcription-independent HDAC2 pathway controlling cancer-related protein stability via the mouse double minute 2 homolog (MDM2) ubiquitin ligase. In synovial sarcoma, HDAC2 inactivation demonstrates significant therapeutic effect by degradation of the SS18-SSX driver oncoprotein.
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Affiliation(s)
| | - Le Su
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
- CONTACT Le Su HudsonAlpha Institute for Biotechnology, 601 Genome Way, Huntsville, AL35806, USA
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4
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Feng X, Huang YL, Zhang Z, Wang N, Yao Q, Pang LJ, Li F, Qi Y. The role of SYT-SSX fusion gene in tumorigenesis of synovial sarcoma. Pathol Res Pract 2021; 222:153416. [PMID: 33848939 DOI: 10.1016/j.prp.2021.153416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/09/2021] [Accepted: 03/20/2021] [Indexed: 12/29/2022]
Abstract
Synovial sarcoma (SS) is an aggressive malignancy of an unknown tissue origin that is characterized by biphasic differentiation. A possible basis of the pathogenesis of SS is pathognomonic t(X;18) (p11.2; q11.2) translocation, leading to the formation and expression of the SYT-SSX fusion gene. More than a quarter of the patients die of SS metastasis within 5 years after the diagnosis, but the pathogenic factors are unknown. Therefore, there is an urgent need to explore the pathogenesis, invasion, metastasis, and clinical treatment options for SS, especially molecular-targeted drug therapy. Recent studies have shown that the SYT-SSX fusion gene associated with SS may be regulated by different signaling pathways, microRNAs, and other molecules, which may produce stem cell characteristics or promote epithelial-mesenchymal transition, resulting in SS invasion and metastasis. This review article aims to show the relationship between the SYT-SSX fusion gene and the related pathway molecules as well as other molecules involved from different perspectives, which may provide a deeper and clearer understanding of the SYT-SSX fusion gene function. Therefore, this review may provide a more innovative and broader perspective of the current research, treatment options, and prognosis assessment of SS.
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Affiliation(s)
- Xiao Feng
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China
| | - Ya-Lan Huang
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China; Department of Pathology Suining Central Hospital, Suining, Sichuan, China
| | - Zhen Zhang
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China
| | - Ning Wang
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China
| | - Qing Yao
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China
| | - Li-Juan Pang
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China
| | - Feng Li
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China; Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
| | - Yan Qi
- Department of Pathology, Shihezi University School of Medicine & the First Affiliated Hospital to Shihezi University School of Medicine, Shihezi, 832002, Xinjiang, China; Department of Pathology, Central People's Hospital of Zhanjiang and Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China.
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5
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Innis SM, Cabot B. GBAF, a small BAF sub-complex with big implications: a systematic review. Epigenetics Chromatin 2020; 13:48. [PMID: 33143733 PMCID: PMC7607862 DOI: 10.1186/s13072-020-00370-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/23/2020] [Indexed: 12/01/2022] Open
Abstract
ATP-dependent chromatin remodeling by histone-modifying enzymes and chromatin remodeling complexes is crucial for maintaining chromatin organization and facilitating gene transcription. In the SWI/SNF family of ATP-dependent chromatin remodelers, distinct complexes such as BAF, PBAF, GBAF, esBAF and npBAF/nBAF are of particular interest regarding their implications in cellular differentiation and development, as well as in various diseases. The recently identified BAF subcomplex GBAF is no exception to this, and information is emerging linking this complex and its components to crucial events in mammalian development. Furthermore, given the essential nature of many of its subunits in maintaining effective chromatin remodeling function, it comes as no surprise that aberrant expression of GBAF complex components is associated with disease development, including neurodevelopmental disorders and numerous malignancies. It becomes clear that building upon our knowledge of GBAF and BAF complex function will be essential for advancements in both mammalian reproductive applications and the development of more effective therapeutic interventions and strategies. Here, we review the roles of the SWI/SNF chromatin remodeling subcomplex GBAF and its subunits in mammalian development and disease.
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Affiliation(s)
- Sarah M Innis
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Birgit Cabot
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA.
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6
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Knott MML, Hölting TLB, Ohmura S, Kirchner T, Cidre-Aranaz F, Grünewald TGP. Targeting the undruggable: exploiting neomorphic features of fusion oncoproteins in childhood sarcomas for innovative therapies. Cancer Metastasis Rev 2019; 38:625-642. [PMID: 31970591 PMCID: PMC6994515 DOI: 10.1007/s10555-019-09839-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
While sarcomas account for approximately 1% of malignant tumors of adults, they are particularly more common in children and adolescents affected by cancer. In contrast to malignancies that occur in later stages of life, childhood tumors, including sarcoma, are characterized by a striking paucity of somatic mutations. However, entity-defining fusion oncogenes acting as the main oncogenic driver mutations are frequently found in pediatric bone and soft-tissue sarcomas such as Ewing sarcoma (EWSR1-FLI1), alveolar rhabdomyosarcoma (PAX3/7-FOXO1), and synovial sarcoma (SS18-SSX1/2/4). Since strong oncogene-dependency has been demonstrated in these entities, direct pharmacological targeting of these fusion oncogenes has been excessively attempted, thus far, with limited success. Despite apparent challenges, our increasing understanding of the neomorphic features of these fusion oncogenes in conjunction with rapid technological advances will likely enable the development of new strategies to therapeutically exploit these neomorphic features and to ultimately turn the "undruggable" into first-line target structures. In this review, we provide a broad overview of the current literature on targeting neomorphic features of fusion oncogenes found in Ewing sarcoma, alveolar rhabdomyosarcoma, and synovial sarcoma, and give a perspective for future developments. Graphical abstract Scheme depicting the different targeting strategies of fusion oncogenes in pediatric fusion-driven sarcomas. Fusion oncogenes can be targeted on their DNA level (1), RNA level (2), protein level (3), and by targeting downstream functions and interaction partners (4).
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Affiliation(s)
- Maximilian M L Knott
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Thalkirchner Str. 36, 80337, Munich, Germany
- Faculty of Medicine, Institute of Pathology, LMU Munich, Munich, Germany
| | - Tilman L B Hölting
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Thalkirchner Str. 36, 80337, Munich, Germany
| | - Shunya Ohmura
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Thalkirchner Str. 36, 80337, Munich, Germany
| | - Thomas Kirchner
- Faculty of Medicine, Institute of Pathology, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Florencia Cidre-Aranaz
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Thalkirchner Str. 36, 80337, Munich, Germany
| | - Thomas G P Grünewald
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Thalkirchner Str. 36, 80337, Munich, Germany.
- Faculty of Medicine, Institute of Pathology, LMU Munich, Munich, Germany.
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany.
- German Cancer Research Center (DKFZ), Heidelberg, Germany.
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7
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Patel N, Wang J, Shiozawa K, Jones KB, Zhang Y, Prokop JW, Davenport GG, Nihira NT, Hao Z, Wong D, Brandsmeier L, Meadows SK, Sampaio AV, Werff RV, Endo M, Capecchi MR, McNagny KM, Mak TW, Nielsen TO, Underhill TM, Myers RM, Kondo T, Su L. HDAC2 Regulates Site-Specific Acetylation of MDM2 and Its Ubiquitination Signaling in Tumor Suppression. iScience 2019; 13:43-54. [PMID: 30818224 PMCID: PMC6393697 DOI: 10.1016/j.isci.2019.02.008] [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: 10/23/2018] [Revised: 01/10/2019] [Accepted: 02/11/2019] [Indexed: 12/17/2022] Open
Abstract
Histone deacetylases (HDACs) are promising targets for cancer therapy, although their individual actions remain incompletely understood. Here, we identify a role for HDAC2 in the regulation of MDM2 acetylation at previously uncharacterized lysines. Upon inactivation of HDAC2, this acetylation creates a structural signal in the lysine-rich domain of MDM2 to prevent the recognition and degradation of its downstream substrate, MCL-1 ubiquitin ligase E3 (MULE). This mechanism further reveals a therapeutic connection between the MULE ubiquitin ligase function and tumor suppression. Specifically, we show that HDAC inhibitor treatment promotes the accumulation of MULE, which diminishes the t(X; 18) translocation-associated synovial sarcomagenesis by directly targeting the fusion product SS18-SSX for degradation. These results uncover a new HDAC2-dependent pathway that integrates reversible acetylation signaling to the anticancer ubiquitin response.
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Affiliation(s)
- Nikita Patel
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Juehong Wang
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Kumiko Shiozawa
- Division of Rare Cancer Research, National Cancer Center, Tokyo 104-0045, Japan
| | - Kevin B Jones
- Department of Orthopaedics and Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - Yanfeng Zhang
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Jeremy W Prokop
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA; Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
| | | | - Naoe T Nihira
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Zhenyue Hao
- Princess Margaret Cancer Centre, University of Toronto, Toronto, ON M5G 2C1, Canada
| | - Derek Wong
- Biomdical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | | | - Sarah K Meadows
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Arthur V Sampaio
- Biomdical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Ryan Vander Werff
- Biomdical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Makoto Endo
- Genetic Pathology Evaluation Centre, Vancouver Coastal Health Research Institute, Vancouver, BC V5Z 1M9, Canada
| | - Mario R Capecchi
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - Kelly M McNagny
- Biomdical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Tak W Mak
- Princess Margaret Cancer Centre, University of Toronto, Toronto, ON M5G 2C1, Canada
| | - Torsten O Nielsen
- Genetic Pathology Evaluation Centre, Vancouver Coastal Health Research Institute, Vancouver, BC V5Z 1M9, Canada
| | - T Michael Underhill
- Biomdical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Richard M Myers
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Tadashi Kondo
- Division of Rare Cancer Research, National Cancer Center, Tokyo 104-0045, Japan
| | - Le Su
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA.
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8
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Peng C, Zhao H, Chen W, Song Y, Wang X, Li J, Qiao Y, Wu D, Ma S, Wang X, Gao C. Identification of SHCBP1 as a novel downstream target gene of SS18-SSX1 and its functional analysis in progression of synovial sarcoma. Oncotarget 2018; 7:66822-66834. [PMID: 27572315 PMCID: PMC5341840 DOI: 10.18632/oncotarget.11651] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 08/21/2016] [Indexed: 01/10/2023] Open
Abstract
The SS18-SSX1 fusion gene has been shown to play important roles in the development of synovial sarcoma (SS), but the underlying molecular mechanisms and its downstream target genes are still not clear. Here SHC SH2-domain binding protein 1 (SHCBP1) was identified and validated to be a novel downstream target gene of SS18-SSX1 by using microarray assay, quantitative real-time (qPCR) and western blot. Expression of SHCBP1 was firstly confirmed in SS cell line and SS tissues. The effects of SHCBP1 overexpression or knockdown on SS cell proliferation and tumorigenicity were then studied by cell proliferation, DNA replication, colony formation, flow cytometric assays, and its in vivo tumorigenesis was determined in the nude mice. Meanwhile, the related signaling pathways of SHCBP1 were also examined in SS cells. The results indicated that SHCBP1 was significantly increased in SS cells and SS tissues compared with adjacent noncancerous tissues. The expression of SHCBP1 was demonstrated to be positively correlated with the SS18-SSX1 level. Overexpression and ablation of SHCBP1 promoted and inhibited, respectively, the proliferation and tumorigenicity of SS cells in vitro. SHCBP1 knockdown also significantly inhibited SS cell growth in nude mice, and lowered the MAPK/ERK and PI3K/AKT/mTOR signaling pathways and cyclin D1 expression. Our findings disclose that SHCBP1 is a novel downstream target gene of SS18-SSX1, and demonstrate that the oncogene SS18-SSX1 promotes tumorigenesis by increasing the expression of SHCBP1, which normally acts as a tumor promoting factor.
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Affiliation(s)
- Changliang Peng
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
| | - Hui Zhao
- Department of Orthopaedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Wei Chen
- Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yan Song
- Nephrology Research Institute, Shandong University Second Hospital, Jinan, China
| | - Xiaoying Wang
- Department of Pathology, Shandong University Second Hospital, Jinan, China
| | - Ji Li
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
| | - Yong Qiao
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
| | - Dongjin Wu
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
| | - Shengzhong Ma
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
| | - Xiuwen Wang
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
| | - Chunzheng Gao
- Department of Orthopaedics, Shandong University Second Hospital, Jinan, China
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9
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Vlenterie M, Hillebrandt-Roeffen MHS, Schaars EWM, Flucke UE, Fleuren EDG, Navis AC, Leenders WPJ, Versleijen-Jonkers YMH, van der Graaf WTA. Targeting Cyclin-Dependent Kinases in Synovial Sarcoma: Palbociclib as a Potential Treatment for Synovial Sarcoma Patients. Ann Surg Oncol 2016; 23:2745-52. [PMID: 27334220 PMCID: PMC4972869 DOI: 10.1245/s10434-016-5341-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Indexed: 11/18/2022]
Abstract
Background In synovial sarcomas alterations in the cyclin D1-CDK4/6-Rb axis have been described. Also, β-catenin, a cyclin D1 regulator, is often overexpressed. Additionally, studies have shown that the t(X;18) translocation influences tumor behavior partly through cyclin D1 activation. We investigated how alterations in the cyclin D1-CDK4/6-Rb axis impact prognosis and studied effects of targeting this axis with the CDK4/6 inhibitor palbociclib. Methods Synovial sarcoma samples (n = 43) were immunohistochemically stained for β-catenin, cyclin D1, p16, p21, p27, Rb, and phospho-Rb. Fluorescent in situ hybridization (FISH) was performed to detect CCND1 amplification or translocation. In 4 synovial sarcoma cell lines sensitivity to palbociclib was investigated using cell viability assays, and effects on the sensitive cell lines were evaluated on protein level and by cell cycle arrest. Results Expression of nuclear phospho-Rb and nuclear β-catenin in the patient samples was associated with poor survival. FISH showed a sporadic translocation of CCND1 in a subset of tumors. An 8-fold CCND1 amplification was found in 1 cell line, but not in the patient samples investigated. Palbociclib effectively inhibited Rb-phosphorylation in 3 cell lines, resulting in an induction of a G1 arrest and proliferation block. Conclusions In this series nuclear phospho-Rb and nuclear β-catenin expression were negative prognostic factors. In vitro data suggest that palbociclib may be a potential treatment for a subset of synovial sarcoma patients. Whether this effect can be enhanced by combination treatment deserves further preclinical investigations. Electronic supplementary material The online version of this article (doi:10.1245/s10434-016-5341-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Myrella Vlenterie
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands.
| | | | - Esther W M Schaars
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Uta E Flucke
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Emmy D G Fleuren
- The Institute of Cancer Research London and the Royal Marsden NHS Foundation Trust, London, UK
| | - Anna C Navis
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - William P J Leenders
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Winette T A van der Graaf
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands.,The Institute of Cancer Research London and the Royal Marsden NHS Foundation Trust, London, UK
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10
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Tamaki S, Fukuta M, Sekiguchi K, Jin Y, Nagata S, Hayakawa K, Hineno S, Okamoto T, Watanabe M, Woltjen K, Ikeya M, Kato T, Toguchida J. SS18-SSX, the Oncogenic Fusion Protein in Synovial Sarcoma, Is a Cellular Context-Dependent Epigenetic Modifier. PLoS One 2015; 10:e0142991. [PMID: 26571495 PMCID: PMC4646489 DOI: 10.1371/journal.pone.0142991] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 10/29/2015] [Indexed: 12/18/2022] Open
Abstract
The prevalence and specificity of unique fusion oncogenes are high in a number of soft tissue sarcomas (STSs). The close relationship between fusion genes and clinicopathological features suggests that a correlation may exist between the function of fusion proteins and cellular context of the cell-of-origin of each tumor. However, most STSs are origin-unknown tumors and this issue has not yet been investigated in detail. In the present study, we examined the effects of the cellular context on the function of the synovial sarcoma (SS)-specific fusion protein, SS18-SSX, using human pluripotent stem cells (hPSCs) containing the drug-inducible SS18-SSX gene. We selected the neural crest cell (NCC) lineage for the first trial of this system, induced SS18-SSX at various differentiation stages from PSCs to NCC-derived mesenchymal stromal cells (MSCs), and compared its biological effects on each cell type. We found that the expression of FZD10, identified as an SS-specific gene, was induced by SS18-SSX at the PSC and NCC stages, but not at the MSC stage. This stage-specific induction of FZD10 correlated with stage-specific changes in histone marks associated with the FZD10 locus and also with the loss of the BAF47 protein, a member of the SWI/SNF chromatin-remodeling complex. Furthermore, the global gene expression profile of hPSC-derived NCCs was the closest to that of SS cell lines after the induction of SS18-SSX. These results clearly demonstrated that the cellular context is an important factor in the function of SS18-SSX as an epigenetic modifier.
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Affiliation(s)
- Sakura Tamaki
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Makoto Fukuta
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Kazuya Sekiguchi
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yonghui Jin
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Sanae Nagata
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Kazuo Hayakawa
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Sho Hineno
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takeshi Okamoto
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Makoto Watanabe
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
- Life Science Research Center, Technology Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Knut Woltjen
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Makoto Ikeya
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Tomohisa Kato
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Junya Toguchida
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- * E-mail:
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11
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Minami Y, Kohsaka S, Tsuda M, Yachi K, Hatori N, Tanino M, Kimura T, Nishihara H, Minami A, Iwasaki N, Tanaka S. SS18-SSX-regulated miR-17 promotes tumor growth of synovial sarcoma by inhibiting p21WAF1/CIP1. Cancer Sci 2014; 105:1152-9. [PMID: 24989082 PMCID: PMC4462386 DOI: 10.1111/cas.12479] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 06/27/2014] [Accepted: 06/29/2014] [Indexed: 12/19/2022] Open
Abstract
MicroRNA (miRNA) can function as tumor suppressors or oncogenes, and also as potential specific cancer biomarkers; however, there are few published studies on miRNA in synovial sarcomas, and their function remains unclear. We transfected the OncomiR miRNA Precursor Virus Library into synovial sarcoma Fuji cells followed by a colony formation assay to identify miRNAs to confer an aggressive tumorigenicity, and identified miR-17-5p from the large colonies. MiR-17 was found to be induced by a chimeric oncoprotein SS18-SSX specific for synovial sarcoma, and all examined cases of human synovial sarcoma expressed miR-17, even at high levels in several cases. Overexpression of miR-17 in synovial sarcoma cells, Fuji and HS-SYII, increased colony forming ability in addition to cell growth, but not cell motility and invasion. Tumor volume formed in mice in vivo was significantly increased by miR-17 overexpression with a marked increase of MIB-1 index. According to PicTar and Miranda algorithms, which predicted CDKN1A (p21) as a putative target of miR-17, a luciferase assay was performed and revealed that miR-17 directly targets the 3′-UTR of p21 mRNA. Indeed, p21 protein level was remarkably decreased by miR-17 overexpression in a p53-independent manner. It is noteworthy that miR-17 succeeded in suppressing doxorubicin-evoked higher expression of p21 and conferred the drug resistance. Meanwhile, introduction of anti-miR-17 in Fuji and HS-SYII cells significantly decreased cell growth, consistent with rescued expression of p21. Taken together, miR-17 promotes the tumor growth of synovial sarcomas by post-transcriptional suppression of p21, which may be amenable to innovative therapeutic targeting in synovial sarcoma.
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Affiliation(s)
- Yusuke Minami
- Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Japan; Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Identification of target genes of synovial sarcoma-associated fusion oncoprotein using human pluripotent stem cells. Biochem Biophys Res Commun 2013; 432:713-9. [DOI: 10.1016/j.bbrc.2013.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 01/03/2013] [Indexed: 02/06/2023]
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Downstream and intermediate interactions of synovial sarcoma-associated fusion oncoproteins and their implication for targeted therapy. Sarcoma 2012; 2012:249219. [PMID: 22550415 PMCID: PMC3329658 DOI: 10.1155/2012/249219] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Accepted: 01/09/2012] [Indexed: 12/14/2022] Open
Abstract
Synovial sarcoma (SS), an aggressive type of soft tissue tumor, occurs mostly in adolescents and young adults. The origin and molecular mechanism of the development of SS remain only partially known. Over 90% of SS cases are characterized by the t(X;18)(p11.2;q11.2) translocation, which results mainly in the formation of
SS18-SSX1 or SS18-SSX2 fusion genes. In recent years, several reports describing direct and indirect interactions of SS18-SSX1/SSX2 oncoproteins have been published. These reports suggest that the fusion proteins particularly affect the cell growth, cell proliferation, TP53 pathway, and chromatin remodeling mechanisms, contributing to SS oncogenesis. Additional research efforts are required to fully explore the protein-protein interactions of SS18-SSX oncoproteins and the pathways that are regulated by these partnerships for the development of effective targeted therapy.
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