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Shao S, Piao L, Wang J, Guo L, Wang J, Wang L, Tong L, Yuan X, Han X, Fang S, Zhu J, Wang Y. Tspan9 Induces EMT and Promotes Osteosarcoma Metastasis via Activating FAK-Ras-ERK1/2 Pathway. Front Oncol 2022; 12:774988. [PMID: 35280793 PMCID: PMC8906905 DOI: 10.3389/fonc.2022.774988] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 01/21/2022] [Indexed: 01/14/2023] Open
Abstract
Object At present, there are few effective treatment options available to patients suffering from osteosarcoma (OS). Clarifying the signaling pathways that govern OS oncogenesis may highlight novel approaches to treating this deadly form of cancer. Recent experimental evidence suggests that the transmembrane protein tetraspanin-9 (Tspan9) plays a role in tumor development. This study was thus formulated to assess the molecular role of Tspan9 as a regulator of OS cell metastasis. Methods Gene expression in OS cell lines was evaluated via qRT-PCR, while CCK-8, colony formation, Transwell, and wound healing assays were used to explore the in vitro proliferative, invasive, and migratory activities of OS cells. The relationship between Tspan9 and in vivo OS cell metastasis was assessed by injecting these cells into the tail vein of nude mice. Interactions between the Tspan9 and integrin β1 proteins were explored through mass spectrometric and co-immunoprecipitation, and Western blotting to assess the functional mechanisms whereby Tspan9 shapes OS pathogenesis. Results Both primary OS tumors and OS cell lines commonly exhibited Tspan9 upregulation, and the knockdown of this tetraspanin suppressed the migration, invasion, and epithelial-mesenchymal transition (EMT) activity in OS cells, whereas Tspan9 overexpression resulted in opposite phenotypes. Tumor lung metastasis were significantly impaired in mice implanted with HOS cells in which Tspan9 was downregulated as compared to mice implanted with control HOS cells. Tspan9 was also found to interact with β1 integrin and to contribute to OS metastasis via the amplification of integrin-mediated downstream FAK/Ras/ERK1/2 signaling pathway. Conclusion These data suggest that Tspan9 can serve as a promising therapeutic target in OS.
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Affiliation(s)
- Shijie Shao
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Lianhua Piao
- Institute of Bioinformatics and Medical Engineering, Jiangsu University of Technology, Changzhou, China
| | - Jiangsong Wang
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Liwei Guo
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Jiawen Wang
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Luhui Wang
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Lei Tong
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiaofeng Yuan
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xu Han
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Sheng Fang
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Junke Zhu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yimin Wang
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, China
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Haining EJ, Matthews AL, Noy PJ, Romanska HM, Harris HJ, Pike J, Morowski M, Gavin RL, Yang J, Milhiet PE, Berditchevski F, Nieswandt B, Poulter NS, Watson SP, Tomlinson MG. Tetraspanin Tspan9 regulates platelet collagen receptor GPVI lateral diffusion and activation. Platelets 2017; 28:629-642. [PMID: 28032533 PMCID: PMC5706974 DOI: 10.1080/09537104.2016.1254175] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/06/2016] [Accepted: 10/20/2016] [Indexed: 12/14/2022]
Abstract
The tetraspanins are a superfamily of four-transmembrane proteins, which regulate the trafficking, lateral diffusion and clustering of the transmembrane proteins with which they interact. We have previously shown that tetraspanin Tspan9 is expressed on platelets. Here we have characterised gene-trap mice lacking Tspan9. The mice were viable with normal platelet numbers and size. Tspan9-deficient platelets were specifically defective in aggregation and secretion induced by the platelet collagen receptor GPVI, despite normal surface GPVI expression levels. A GPVI activation defect was suggested by partially impaired GPVI-induced protein tyrosine phosphorylation. In mechanistic experiments, Tspan9 and GPVI co-immunoprecipitated and co-localised, but super-resolution imaging revealed no defects in collagen-induced GPVI clustering on Tspan9-deficient platelets. However, single particle tracking using total internal reflection fluorescence microscopy showed that GPVI lateral diffusion was reduced by approximately 50% in the absence of Tspan9. Therefore, Tspan9 plays a fine-tuning role in platelet activation by regulating GPVI membrane dynamics.
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Affiliation(s)
- Elizabeth J. Haining
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Alexandra L. Matthews
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Peter J. Noy
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | | | - Helen J. Harris
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Jeremy Pike
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
- PSIBS Doctoral Training Centre, School of Chemistry, University of Birmingham, Birmingham, UK
| | - Martina Morowski
- Department of Experimental Biomedicine, University Hospital, University of Würzburg, Würzburg, Germany
| | - Rebecca L. Gavin
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Jing Yang
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Pierre-Emmanuel Milhiet
- INSERM U1054, CNRS, UMR 5048, Centre de Biochimie Structurale, Montpellier University, France
| | - Fedor Berditchevski
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Bernhard Nieswandt
- Department of Experimental Biomedicine, University Hospital, University of Würzburg, Würzburg, Germany
| | - Natalie S. Poulter
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Steve P. Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Michael G. Tomlinson
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
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Feng T, Sun L, Qi W, Pan F, Lv J, Guo J, Zhao S, Ding A, Qiu W. Prognostic significance of Tspan9 in gastric cancer. Mol Clin Oncol 2016; 5:231-236. [PMID: 27588187 DOI: 10.3892/mco.2016.961] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 05/25/2016] [Indexed: 12/13/2022] Open
Abstract
Tetraspanins are a large superfamily of glycoproteins, which are engaged in a wide range of specific molecular interactions by forming tetraspanin-enriched microdomains. Tetraspanin 9 (Tspan9) is a previously poorly studied tetraspanin gene, which was predominantly identified as an amplified gene in serous Fallopian tube carcinoma. However, the expression and role of Tspan9 in gastric cancer have yet to be fully elucidated. The aim of the present study was to evaluate the expression and clinical significance of Tspan9 in gastric cancer. In the present study, 105 gastric cancer tissue samples and corresponding adjacent normal samples were detected for Tspan9 expression using immunohistochemistry; furthermore, the association between clinical characteristics and Tspan9 expression was also analyzed. Tspan9 expression was determined to be significantly lower in cancer samples compared with those in corresponding adjacent normal samples (P<0.001). However, its increased levels of expression in cancer samples appeared to demonstrate a poorer prognostic tendency, which is associated with deeper tumor depth (P=0.025), more nodal involvement (P=0.01), more advanced tumor/lymph node/metastasis (TNM) stages (P=0.017) and a larger tumor size (P=0.026). Additionally, multivariate analysis demonstrated that high expression of Tspan9 was an independent prognostic factor for poor overall survival (P<0.01). These results suggested that Tspan9 may be used as a potential prognostic factor in gastric cancer.
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Affiliation(s)
- Tongtong Feng
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Libin Sun
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Weiwei Qi
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Fei Pan
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Jing Lv
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Jing Guo
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Shufen Zhao
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Aiping Ding
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Wensheng Qiu
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
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