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Useckaite Z, Mukhopadhya A, Moran B, O'Driscoll L. Extracellular vesicles report on the MET status of their cells of origin regardless of the method used for their isolation. Sci Rep 2020; 10:19020. [PMID: 33149187 PMCID: PMC7642384 DOI: 10.1038/s41598-020-75817-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/22/2020] [Indexed: 12/28/2022] Open
Abstract
MET pathway is an important actionable target across many solid tumour types and several MET inhibitors have been developed. Extracellular vesicles (EVs) are proposed to be mini-maps of their cells of origin. However, the potential of EVs to report on the MET status of their cells of origin is unknown. After applying three proposed methods of EV separation from medium conditioned by three cell lines of known MET status, this study used an extensive range of methodologies to fundamentally characterise the resulting particles (nanoparticle tracking analysis, TEM, flow cytometry, immunoblotting) and their MET status (RT-qPCR and ELISAs). The results indicated that ultracentrifugation on density-gradient (UC-DG) consistently produced the most reliable data with regards to purest EVs. EV cargo reflected MET mRNA, total MET and pMET status of their cells of origin. In conclusion, to simply determine if the general contents of conditioned medium reflect the MET status of the conditioning cells, choice of method for initial EV separation may not be crucial. However, to be confident of specifically studying EVs and thus EV-MET cargo, UC-DG followed by extensive EV characterisation is necessary.
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Affiliation(s)
- Zivile Useckaite
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.,Trinity St. James's Cancer Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Anindya Mukhopadhya
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Barry Moran
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Lorraine O'Driscoll
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland. .,Trinity St. James's Cancer Institute, Trinity College Dublin, Dublin 2, Ireland.
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Wang W, Wen Q, Luo J, Chu S, Chen L, Xu L, Zang H, Alnemah MM, Li J, Zhou J, Fan S. Suppression Of β-catenin Nuclear Translocation By CGP57380 Decelerates Poor Progression And Potentiates Radiation-Induced Apoptosis in Nasopharyngeal Carcinoma. Theranostics 2017; 7:2134-2149. [PMID: 28656063 PMCID: PMC5485425 DOI: 10.7150/thno.17665] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 04/08/2017] [Indexed: 02/07/2023] Open
Abstract
Nuclear localization of β-catenin is essential for the progression of various human cancers via transcriptional upregulation of downstream genes. The MAP kinase interacting serine/threonine kinase (MNK)-eukaryotic translation initiation factor 4E (eIF4E) axis has been reported to activate Wnt/β-catenin signaling, and CGP57380, an inhibitor of MNK kinases, inhibits the proliferation of multiple cancers. In this study, we showed that β-catenin signaling (including β-catenin, cyclin D1, c-Myc, and MMP-7) and p-eIF4E expression were elevated in nasopharyngeal carcinoma (NPC) compared with non-cancerous nasopharyngeal epithelial tissues, and was associated with clinical characteristics of NPC patients. Lymph node metastasis, gender, aberrant β-catenin expression, and elevated levels of MMP-7 and cyclin D1 were independent prognostic factors. Significantly, expression of p-eIF4E was positively correlated with β-catenin, and targeting the MNK-eIF4E axis with CGP57380 downregulated β-catenin in the nucleus, which in turn decreased proliferation, cell cycle progression, migration, invasion, and metastasis of NPC in vitro and in vivo. CGP57380 also potentiated radiation-induced apoptosis in NPC. Moreover, CGP57380 upregulated β-catenin in the cytoplasm thus blocking epithelial-mesenchymal transition (EMT), a key mechanism in cancer cell invasiveness and metastasis. Mechanistically, inhibition of β-catenin nuclear translocation by CGP57380 was dependent on AKT activation. Notably, identification of the MNK/eIF4E/β-catenin axis might provide a potential target for overcoming the poor prognosis mediated by β-catenin in NPC.
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Affiliation(s)
- Weiyuan Wang
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Qiuyuan Wen
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Jiadi Luo
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Shuzhou Chu
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Lingjiao Chen
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Lina Xu
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Hongjing Zang
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Mohannad Ma Alnemah
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Jinghe Li
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Jianhua Zhou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Songqing Fan
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
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Wang Y, Chen G. Identifying pretreatment baseline factors predictive of distant metastasis in patients with nasopharyngeal carcinoma after radiotherapy. Medicine (Baltimore) 2017; 96:e6692. [PMID: 28445271 PMCID: PMC5413236 DOI: 10.1097/md.0000000000006692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
This retrospective study was performed to identify pretreatment baseline factors that could predict the development of distant metastasis (DM) in patients with nasopharyngeal carcinoma (NPC).A cohort of 119 NPC patients undergoing radiotherapy (RT) or chemoradiotherapy (CRT) were recruited into the study. Among them, 51 developed DM (DM group) within 3 years after treatment and 68 did not (DM-free group). Various clinicopathological factors were measured before the treatment and analyzed by univariate as well as multivariate analyses for the potential correlation with DM development.Univariate analysis revealed that increased peripheral lactate dehydrogenase (LDH) level, lower lymphocyte-monocyte ratio (LMR), higher neutrophil-lymphocyte ratio (NLR), advanced American Joint Committee on Cancer (AJCC) stage, advanced T stage, and advanced N stage were significantly correlated with the presence of DM. Multivariate analysis identified advanced AJCC stage and high LDH level were independent predictive factors for DM.Routinely measured pretreatment clinical factors, including AJCC state and serum LDH level, could independently predict DM. These factors will benefit the selection of appropriate treatment options and improve the overall survival of NPC patients.
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