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Synovial cell sarcoma

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https://www.readbyqxmd.com/read/29050367/expression-and-clinical-association-of-programmed-cell-death-1-programmed-death-ligand-1-and-cd8-lymphocytes-in-primary-sarcomas-is-subtype-dependent
#1
Anke E M van Erp, Yvonne M H Versleijen-Jonkers, Melissa H S Hillebrandt-Roeffen, Laurens van Houdt, Mark A J Gorris, Laura S van Dam, Thomas Mentzel, Marije E Weidema, C Dilara Savci-Heijink, Ingrid M E Desar, Hans H M Merks, Max M van Noesel, Janet Shipley, Winette T A van der Graaf, Uta E Flucke, Friederike A G Meyer-Wentrup
In order to explore the potential of immune checkpoint blockade in sarcoma, we investigated expression and clinical relevance of programmed cell death-1 (PD-1), programmed death ligand-1 (PD-L1) and CD8 in tumors of 208 sarcoma patients. Primary untreated osteosarcoma (n = 46), Ewing sarcoma (n = 32), alveolar rhabdomyosarcoma (n = 20), embryonal rhabdomyosarcoma (n = 77), synovial sarcoma (n = 22) and desmoplastic small round cell tumors (DSRCT) (n = 11) were examined immunohistochemically. PD-L1 expression was predominantly detected in alveolar and embryonal rhabdomyosarcomas (15% and 16%, respectively)...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29039456/construction-of-a-bcl-2-shrna-expression-vector-and-its-effect-on-the-mitochondrial-apoptosis-pathway-in-sw982-cells
#2
Weidong Zhang, Xinjie Xue, Teng Fu
Apoptosis is considered to serve an important role in the pathogenesis of rheumatoid arthritis. The aim of the present study was to construct Bcl-2-short hairpin (sh)RNA expression vectors and transfect them into human synovial sarcoma SW982 cells, in order to screen for an effective interference sequence and analyze the effects of this interference on the expression levels of Bcl-2 and other molecules associated with the mitochondrial apoptosis pathway. Three different shRNAs (Bcl-2-sh1, 2 and 3) were designed according to the human Bcl-2 mRNA target sequence and were transformed into competent DH5α Escherichia coli cells following the construction of an expression vector, which was then transfected into SW982 cells...
September 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29038346/atr-is-a-therapeutic-target-in-synovial-sarcoma
#3
Samuel E Jones, Emmy D G Fleuren, Jessica Frankum, Asha Konde, Chris T Williamson, Dragomir B Krastev, Helen N Pemberton, James Campbell, Aditi Gulati, Richard Elliott, Malini Menon, Joanna L Selfe, Rachel Brough, Stephen J Pettitt, Wojciech Niedzwiedz, Winette T A van der Graaf, Janet Shipley, Alan Ashworth, Christopher J Lord
Synovial sarcoma (SS) is an aggressive soft-tissue malignancy characterised by expression of SS18-SSX fusions, where treatment options are limited. To identify therapeutically actionable genetic dependencies in SS, we performed a series of parallel, high-throughput small interfering RNA (siRNA) screens and compared genetic dependencies in SS tumor cells to those in >130 non-SS tumour cell lines. This approach revealed a reliance of SS tumor cells upon the DNA damage response serine/threonine protein kinase ATR...
October 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/29033534/multicellular-tumor-spheroids-of-human-uveal-melanoma-induce-genes-associated-with-anoikis-resistance-lipogenesis-and-ssxs
#4
Charlotte Ness, Øystein Garred, Nils A Eide, Theresa Kumar, Ole K Olstad, Thomas P Bærland, Goran Petrovski, Morten C Moe, Agate Noer
PURPOSE: Uveal melanoma (UM) has a high propensity for metastatic spread, and approximately 40-50% of patients die of metastatic disease. Metastases can be found at the time of diagnosis but also several years after the tumor has been removed. The survival of disseminated cancer cells is known to be linked to anchorage independence, anoikis resistance, and an adaptive cellular metabolism. The cultivation of cancer cells as multicellular tumor spheroids (MCTS) by anchorage-independent growth enriches for a more aggressive phenotype...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29025595/first-cloned-human-immortalized-adipose-derived-mesenchymal-stem-cell-line-with-chimeric-ss18-ssx1-gene-ss-iasc
#5
Dóra Mihály, Zsolt Matula, Yi-Che Changchien, Gergő Papp, Péter Tátrai, Zoltán Sápi
The SS18-SSX chimeric gene is unique to synovial sarcoma. Multiple model systems including mouse cell lines expressing SS18-SSX, and genetically engineered mouse models of synovial sarcoma have been developed to elucidate the role of the chimeric gene in synovial sarcomagenesis. Although several cell lines stably expressing human SS18-SSX exist, there is an ongoing need for cell culture models enabling researchers to investigate the molecular mechanism of SS18-SSX action in a relevant cellular context. Here we report the establishment of a novel SS18-SSX1-expressing cell line created from immortalized human adipose tissue-derived mesenchymal stem cells via lentiviral transduction of the chimeric gene...
October 2017: Cancer Genetics
https://www.readbyqxmd.com/read/29020987/shcbp1-promotes-synovial-sarcoma-cell-metastasis-via-targeting-tgf-%C3%AE-1-smad-signaling-pathway-and-is-associated-with-poor-prognosis
#6
Changliang Peng, Hui Zhao, Yan Song, Wei Chen, Xiaoying Wang, Xiaoli Liu, Cheng Zhang, Jie Zhao, Ji Li, Guanghui Cheng, Dongjin Wu, Chunzheng Gao, Xiuwen Wang
BACKGROUND: Our previous studies reported that SHC SH2-domain binding protein 1 (SHCBP1) functions as an oncogene via promoting cell proliferations in synovial sarcoma (SS) cells. However, whether SHCBP1 has any effect on tumor metastasis remains unexplored. METHODS: The expression of SHCBP1 was analyzed in 76 SS tissues and two SS cell lines by immunohistochemistry and real-time RT-PCR. The relationship between SHCBP1 expression and the clinicopathological features of SS was investigated...
October 11, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28984347/tumorous-conditions-of-the-hand-a-retrospective-review-of-402-cases
#7
Ali Cavit, Haluk Özcanli, Mesut Sançmiş, Güzide Ayşe Ocak, Elif İnanç Gürer
OBJECTIVE: Knowledge concerning treatment and care of hand lesions is often based on small case series, case reports and a few large general case series. The aim of this study is to present our experience with hand tumors' and tumor-like lesions' incidence, age range and localizations. MATERIAL AND METHOD: Between 2006-2016, 402 patients operated and histopathologically diagnosed with bone and soft tissue tumorous conditions of the hand were evaluated retrospectively...
October 6, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28926357/first-in-human-treatment-with-a-dendritic-cell-targeting-lentiviral-vector-expressing-ny-eso-1-lv305-induces-deep-durable-response-in-refractory-metastatic-synovial-sarcoma-patient
#8
Seth M Pollack, Hailing Lu, Sacha Gnjatic, Neeta Somaiah, Ryan B O'Malley, Robin L Jones, Frank J Hsu, Jan Ter Meulen
Effective induction of antitumor T cells is a pivotal goal of cancer immunotherapy. To this end, lentiviral vectors (LV) are uniquely poised to directly prime CD8 T-cell responses via transduction of dendritic cells in vivo and have shown promise as active cancer therapeutics in preclinical tumor models. However, until now, significant barriers related to production and regulation have prevented their widespread use in the clinic. We developed LV305, a dendritic cell-targeting, integration-deficient, replication incompetent LV from the ZVex platform, encoding the full-length cancer-testis antigen NY-ESO-1...
September 18, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28898989/role-of-histone-h3k27-trimethylation-loss-as-a-marker-for-malignant-peripheral-nerve-sheath-tumor-in-fine-needle-aspiration-and-small-biopsy-specimens
#9
Jeffrey K Mito, Xiaohua Qian, Leona A Doyle, Jason L Hornick, Vickie Y Jo
Objectives: Accurate diagnosis of malignant peripheral nerve sheath tumor (MPNST) is often challenging on fine-needle aspiration (FNA) or core needle biopsy. Recurrent mutations in EED and SUZ12, which encode subunits of polycomb repressive complex 2 (PRC2), have been identified in 70% to 92% of MPNSTs; PRC2 inactivation leads to loss of trimethylation of lysine 27 of histone H3 (H3K27me3). We evaluated the utility of H3K27me3 immunohistochemistry for distinguishing MPNST from its cytomorphologic mimics...
August 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28892972/renal-synovial-sarcoma-in-a-young-pregnant-lady-a-case-report-and-clinico-pathological-profile
#10
Gregory Pathrose, Nirmal Thampi John, Pradeep Hariharan
Synovial sarcoma is a soft tissue neoplasm with clearly defined histologic, immunohistochemical and molecular features. These tumours usually arise in the extremities of young adults. Their occurrence in the kidney is extremely rare. A 25-year-old pregnant lady in her first trimester was incidentally found to have a left renal mass on perinatal ultrasonography. MRI showed a well encapsulated, heterointense mass replacing the left kidney. Following medical termination of her pregnancy, a radical nephrectomy was performed...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28891906/first-in-human-treatment-with-a-dendritic-cell-targeting-lentiviral-vector-expressing-ny-eso-1-lv305-induces-deep-durable-response-in-refractory-metastatic-synovial-sarcoma-patient
#11
Seth M Pollack, Hailing Lu, Sacha Gnjatic, Neeta Somaiah, Ryan B O'Malley, Robin L Jones, Frank J Hsu, Jan Ter Meulen
Effective induction of antitumor T cells is a pivotal goal of cancer immunotherapy. To this end, lentiviral vectors (LV) are uniquely poised to directly prime CD8 T-cell responses via transduction of dendritic cells in vivo and have shown promise as active cancer therapeutics in preclinical tumor models. However, until now, significant barriers related to production and regulation have prevented their widespread use in the clinic. We developed LV305, a dendritic cell-targeting, integration-deficient, replication incompetent LV from the ZVex platform, encoding the full-length cancer-testis antigen NY-ESO-1...
October 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28878027/death-by-hdac%C3%A2-inhibition-in-synovial-sarcoma-cells
#12
Aimée N Laporte, Neal M Poulin, Jared J Barrott, Xiu Qing Wang, Alireza Lorzadeh, Ryan Vander Werff, Kevin B Jones, T Michael Underhill, Torsten O Nielsen
Conventional cytotoxic therapies for synovial sarcoma provide limited benefit, and no drugs specifically targeting the causative SS18-SSX fusion oncoprotein are currently available. Histone deacetylase (HDAC) inhibition has been shown in previous studies to disrupt the synovial sarcoma oncoprotein complex, resulting in apoptosis. To understand the molecular effects of HDAC inhibition, RNA-Seq transcriptome analysis was undertaken in six human synovial sarcoma cell lines. HDAC inhibition induced pathways of cell cycle arrest, neuronal differentiation and response to oxygen-containing species, effects also observed in other cancers treated with this class of drugs...
September 6, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28869107/molecular-characterization-of-a-series-of-solitary-fibrous-tumors-including-immunohistochemical-expression-of-stat6-and-natb2-stat6-fusion-transcripts-using-reverse-transcriptase-rt-polymerase-chain-reaction-pcr-technique-an-indian-experience
#13
Bharat Rekhi, Omshree Shetty, Parul Tripathi, Prachi Bapat, Mukta Ramadwar, Jyoti Bajpai, Ajay Puri
A solitary fibrous tumor (SFT) is characterized by a diverse clinicopathologic spectrum. Recent studies have unraveled STAT6 as a useful diagnostic immunohistochemical (IHC) marker for a SFT and NAB2-STAT6 as its specific gene fusion transcript. Thirty-three SFTs were tested for STAT6 immunostaining by polymer detection technique. STAT6 immunoexpression was further graded, based on intensity (mild, moderate and strong) and percentage of immunopositive tumor cells, ranging from 1 to 25%(1+); 26-50%(2+); 51-75%(3+) and in more than 75%(4+) tumor nuclei...
August 26, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28851813/the-influential-role-of-bcl2-family-members-in-synovial-sarcomagenesis
#14
Jared J Barrott, Ju-Fen Zhu, Kyllie Smith-Fry, Asia M Susko, Dakota Nollner, Lance Burrell, Amir Pozner, Mario R Capecchi, Jeffrey T Yap, Lisa A Cannon-Albright, Xingming Deng, Kevin B Jones
Synovial sarcomas are deadly soft-tissue malignancies associated with t(X;18) balanced chromosomal translocations. Expression of the apoptotic regulator BCL2 is prominent in synovial sarcomas and has prompted the hypothesis that synovial sarcomagenesis may depend on it. Herein, it is demonstrated that Bcl2 overexpression enhances synovial sarcomagenesis in an animal model. Further, we determined increased familial clustering of human synovial sarcoma patients with victims of other BCL2-associated malignancies in the Utah Population Database...
August 29, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28836496/metachronuous-synovial-sarcoma-after-treatment-of-mixed-germ-cell-tumor-in-a-child-of-complet-gonodal-dysgenesis
#15
Feryal Karahan, Elvan Çağlar Çıtak, Emel Yaman, Mehmet Alakaya, Fatih Sağcan, Eda Bengi Yılmaz, Funda Kuş, İclal Gürses, Yüksel Balcı
A complet XY gonadal dysgenesis (GD) shows a high predisposition to germ cell tumor (GCT). Patients with coexistence of GCT and GD were reported before but here, we present a 15 year-old girl with mixed GCT and GD and also having intra-abdominal synovial sarcoma one year after the treatment.
August 24, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28834344/unusual-presentation-of-poorly-differentiated-primary-pulmonary-synovial-sarcoma-pd-ppss-diagnosed-by-ebus-tbna-with-cytogenetic-confirmation-a-diagnostic-challenge
#16
Sharvari Dalal, Charles E Nicholson, Darshana Jhala
Poorly differentiated primary pulmonary synovial sarcoma (PD-PPSS) is a rare, aggressive neoplasm, which occurs in 0.5% cases of all lung malignancies. The diagnosis of PD-PPSS can be very challenging on cytology samples. We present here an unusual case of PD-PPSS diagnosed by endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA), in the setting of known history of diffuse large B-cell lymphoma. Diff-Quik and Papanicolaou stains showed cellular specimen with clusters of highly atypical small round blue cells admixed with lymphoid elements; and some with denuded cytoplasm...
August 18, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28832074/programmed-death-ligand-1-pd-l1-expression-in-malignant-mesenchymal-tumors
#17
Kemal Kösemehmetoğlu, Ece Özoğul, Berrin Babaoğlu, Gaye Güler Tezel, Gökhan Gedikoğlu
OBJECTIVE: Programmed death ligand 1 (PD-L1) found on tumor cells has recently been reported to have a key role in the development and dissemination of many tumors, such as lung and breast carcinomas. In this study, we retrospectively analyzed PD-L1 expression among different types of sarcomas. MATERIAL AND METHOD: Tissue microarrays of 3-4 mm diameter were composed from paraffin blocks of 222 various sarcomas. Slides prepared from microarrays were stained for PD-L1 antibody (Cell Signaling, E1L3N®) using Leica Bond Autostainer...
2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28829837/transforming-growth-factor-%C3%AE-1-signaling-promotes-epithelial-mesenchymal-transition-like-phenomena-cell-motility-and-cell-invasion-in-synovial-sarcoma-cells
#18
Yan Qi, Ning Wang, Yonglai He, Jun Zhang, Hong Zou, Wenjie Zhang, Wenyi Gu, Yalan Huang, Xiaojuan Lian, Jianming Hu, Jin Zhao, Xiaobin Cui, Lijuan Pang, Feng Li
The epithelial-to-mesenchymal transition (EMT) and the reverse process (the mesenchymal-to-epithelial transition [MET]) have been shown to be associated with tumor cell invasion and metastasis in different carcinomas. The EMT and MET have recently been shown to play a key role in the pathogenic processes of sarcomas, which are completely different from those of carcinomas. However, the definitive roles of the EMT in the tumorigenesis of synovial sarcomas remain unknown. Here, we explored whether transforming growth factor (TGF)-β signaling, an important oncogenic event in synovial sarcoma, modulates tumor cell characteristics related to the EMT, such as cell adhesion, migration, invasion, and proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28817404/primary-renal-sarcomas-with-bcor-ccnb3-gene-fusion-a-report-of-2-cases-showing-histologic-overlap-with-clear-cell-sarcoma-of-kidney-suggesting-further-link-between-bcor-related-sarcomas-of-the-kidney-and-soft-tissues
#19
Pedram Argani, Yu-Chien Kao, Lei Zhang, Carlos Bacchi, Andres Matoso, Rita Alaggio, Jonathan I Epstein, Cristina R Antonescu
We report 2 primary renal sarcomas demonstrating BCOR-CCNB3 gene fusions that have recently been identified in undifferentiated round cell sarcomas of bone and soft tissue. These neoplasms occurred in male children aged 11 and 12 years, and both were cystic as a result of entrapment and dilatation of native renal tubules. Both cases were composed of variably cellular bland spindle cells with fine chromatin set in myxoid stroma and separated by a branching capillary vasculature. Both neoplasms demonstrated immunoreactivity for BCOR, cyclin D1, TLE1, and SATB2 in the spindle neoplastic cells and negativity in the prominent capillary vasculature...
August 16, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28814294/canine-intrathoracic-sarcoma-with-ultrastructural-characteristics-of-human-synovial-sarcoma-case-report
#20
Ser Lovell, R K Burchell, P J Roady, R L Fredrickson, A Gal
BACKGROUND: Canine joint sarcomas, designated synovial sarcomas, are uncommon malignant mesenchymal neoplasms that occur in the large joints of the extremities of middle-aged, large-breed dogs. We report the diagnosis of an intrathoracic sarcoma with ultrastructural characteristics reminiscent of human synovial sarcoma in a dog. CASE PRESENTATION: A 7-year-old female spayed Tibetan terrier crossbred dog was presented for acute severe labored breathing and diagnosed with an intrathoracic neoplastic mass...
August 16, 2017: BMC Veterinary Research
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