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Lopez DC, Fabian KP, Padget MR, Robbins YL, Kowalczyk JT, Lassoued W, Pastor DM, Allen CT, Gallia GL, Gulley JL, Hodge JW, London NR. Chordoma cancer stem cell subpopulation characterization may guide targeted immunotherapy approaches to reduce disease recurrence. Front Oncol 2024; 14:1376622. [PMID: 38741774 PMCID: PMC11089222 DOI: 10.3389/fonc.2024.1376622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 04/08/2024] [Indexed: 05/16/2024] Open
Abstract
Introduction Cancer stem cells (CSCs), a group of tumor-initiating and tumor-maintaining cells, may be major players in the treatment resistance and recurrence distinctive of chordoma. Characterizing CSCs is crucial to better targeting this subpopulation. Methods Using flow cytometry, six chordoma cell lines were evaluated for CSC composition. In vitro, cell lines were stained for B7H6, HER2, MICA-B, ULBP1, EGFR, and PD-L1 surface markers. Eighteen resected chordomas were stained using a multispectral immunofluorescence (mIF) antibody panel to identify CSCs in vivo. HALO software was used for quantitative CSC density and spatial analysis. Results In vitro, chordoma CSCs express more B7H6, MICA-B, and ULBP1, assessed by percent positivity and mean fluorescence intensity (MFI), as compared to non-CSCs in all cell lines. PD- L1 percent positivity is increased by >20% in CSCs compared to non-CSCs in all cell lines except CH22. In vivo, CSCs comprise 1.39% of chordoma cells and most are PD-L1+ (75.18%). A spatial analysis suggests that chordoma CSCs cluster at an average distance of 71.51 mm (SD 73.40 mm) from stroma. Discussion To our knowledge, this study is the first to identify individual chordoma CSCs and describe their surface phenotypes using in vitro and in vivo methods. PD-L1 is overexpressed on CSCs in chordoma human cell lines and operative tumor samples. Similarly, potential immunotherapeutic targets on CSCs, including B7H6, MICA-B, ULBP1, EGFR, and HER2 are overexpressed across cell lines. Targeting these markers may have a preferential role in combating CSCs, an aggressive subpopulation likely consequential to chordoma's high recurrence rate.
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Affiliation(s)
- Diana C. Lopez
- Sinonasal and Skull Base Tumor Program, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Kellsye P. Fabian
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Michelle R. Padget
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Yvette L. Robbins
- Head and Neck Section, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Joshua T. Kowalczyk
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Department of Medicine, Duke University School of Medicine, Durham, NC, United States
| | - Wiem Lassoued
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Danielle M. Pastor
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Clint T. Allen
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Head and Neck Section, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Gary L. Gallia
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Neurosurgery, Johns Hopkins University School of Medicine;, Baltimore, MD, United States
| | - James L. Gulley
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - James W. Hodge
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Nyall R. London
- Sinonasal and Skull Base Tumor Program, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Neurosurgery, Johns Hopkins University School of Medicine;, Baltimore, MD, United States
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Ghosh PK, Ghosh A. Dysregulation of noncoding RNA in chordoma; implications in identifying potential targets for novel therapeutic approaches. Mol Biol Rep 2024; 51:125. [PMID: 38236360 DOI: 10.1007/s11033-023-09017-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 10/23/2023] [Indexed: 01/19/2024]
Abstract
Chordoma is a rare form of bone cancer develops in the spinal cord and skull. Instead of conventional (radio/chemotherapies) and targeted therapies, the disease is associated with high rate of recurrence and poor patient survival. Thus, for better disease management, the molecular pathogenesis of chordoma should be studied in detail to identify dysregulated biomolecules that can be targeted by novel therapeutics. Recent research showed frequent dysregulation of long noncoding RNA (lncRNA), microRNA (miRNA), and circular RNA (circRNA) in association with aggressive tumor phenotypes like cell proliferation, migration, invasion, and metastasis in a variety of cancers, including chordoma. Apart from diagnostic and prognostic importance, noncoding RNAs may serve as promising targets for novel therapeutics in cancer. In this review, we summarized a list of miRNAs, lncRNAs, and circRNA found to be dysregulated in chordoma from available data published in relevant databases (PubMed), as such an approach seems to be rare to date. The dysregulated noncoding RNAs were also associated with adverse tumor phenotypes to assess the impact on disease pathogenesis and, associated downstream molecular pathways were focused. Synthetic compounds and natural products that were reported to target the noncoding RNAs in other malignancies were also listed from published literature and proposed as potential therapeutic agents in chordoma. This review will provide information for further research on chordoma focusing on detailed characterization of dysregulated lncRNAs, miRNAs, and circRNA to understand the disease pathogenesis and, exploration of suitable natural and synthetic products targeting dysregulated non-coding RNAs to develop effective therapeutic measures.
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Affiliation(s)
- Pramit Kumar Ghosh
- Department of Life Sciences, Presidency University, Kolkata, West Bengal, India
| | - Amlan Ghosh
- Department of Life Sciences, Presidency University, Kolkata, West Bengal, India.
- Genetics of Non-communicable Diseases, Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, 700073, India.
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Single-cell transcriptome reveals cellular hierarchies and guides p-EMT-targeted trial in skull base chordoma. Cell Discov 2022; 8:94. [PMID: 36127333 PMCID: PMC9489773 DOI: 10.1038/s41421-022-00459-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 08/19/2022] [Indexed: 11/08/2022] Open
Abstract
Skull base chordoma (SBC) is a bone cancer with a high recurrence rate, high radioresistance rate, and poorly understood mechanism. Here, we profiled the transcriptomes of 90,691 single cells, revealed the SBC cellular hierarchies, and explored novel treatment targets. We identified a cluster of stem-like SBC cells that tended to be distributed in the inferior part of the tumor. Combining radiated UM-Chor1 RNA-seq data and in vitro validation, we further found that this stem-like cell cluster is marked by cathepsin L (CTSL), a gene involved in the packaging of telomere ends, and may be responsible for radioresistance. Moreover, signatures related to partial epithelial-mesenchymal transition (p-EMT) were found to be significant in malignant cells and were related to the invasion and poor prognosis of SBC. Furthermore, YL-13027, a p-EMT inhibitor that acts through the TGF-β signaling pathway, demonstrated remarkable potency in inhibiting the invasiveness of SBC in preclinical models and was subsequently applied in a phase I clinical trial that enrolled three SBC patients. Encouragingly, YL-13027 attenuated the growth of SBC and achieved stable disease with no serious adverse events, underscoring the clinical potential for the precision treatment of SBC with this therapy. In summary, we conducted the first single-cell RNA sequencing of SBC and identified several targets that could be translated to the treatment of SBC.
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Duan W, Zhang B, Li X, Chen W, Jia S, Xin Z, Jian Q, Jian F, Chou D, Chen Z. Single-cell transcriptome profiling reveals intra-tumoral heterogeneity in human chordomas. Cancer Immunol Immunother 2022; 71:2185-2195. [DOI: 10.1007/s00262-022-03152-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 01/04/2022] [Indexed: 10/19/2022]
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Kaushik V, Kulkarni Y, Felix K, Azad N, Iyer AKV, Yakisich JS. Alternative models of cancer stem cells: The stemness phenotype model, 10 years later. World J Stem Cells 2021; 13:934-943. [PMID: 34367485 PMCID: PMC8316871 DOI: 10.4252/wjsc.v13.i7.934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/05/2021] [Accepted: 07/09/2021] [Indexed: 02/06/2023] Open
Abstract
The classical cancer stem cell (CSCs) theory proposed the existence of a rare but constant subpopulation of CSCs. In this model cancer cells are organized hierarchically and are responsible for tumor resistance and tumor relapse. Thus, eliminating CSCs will eventually lead to cure of cancer. This simplistic model has been challenged by experimental data. In 2010 we proposed a novel and controversial alternative model of CSC biology (the Stemness Phenotype Model, SPM). The SPM proposed a non-hierarchical model of cancer biology in which there is no specific subpopulation of CSCs in tumors. Instead, cancer cells are highly plastic in term of stemness and CSCs and non-CSCs can interconvert into each other depending on the microenvironment. This model predicts the existence of cancer cells ranging from a pure CSC phenotype to pure non-CSC phenotype and that survival of a single cell can originate a new tumor. During the past 10 years, a plethora of experimental evidence in a variety of cancer types has shown that cancer cells are indeed extremely plastic and able to interconvert into cells with different stemness phenotype. In this review we will (1) briefly describe the cumulative evidence from our laboratory and others supporting the SPM; (2) the implications of the SPM in translational oncology; and (3) discuss potential strategies to develop more effective therapeutic regimens for cancer treatment.
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Affiliation(s)
- Vivek Kaushik
- School of Pharmacy, Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, United States
| | - Yogesh Kulkarni
- School of Pharmacy, Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, United States
| | - Kumar Felix
- School of Pharmacy, Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, United States
| | - Neelam Azad
- School of Pharmacy, Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, United States
| | - Anand Krishnan V Iyer
- School of Pharmacy, Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, United States
| | - Juan Sebastian Yakisich
- School of Pharmacy, Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, United States
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Fodor A, Lazar AL, Buchman C, Tiperciuc B, Orasan OH, Cozma A. MicroRNAs: The Link between the Metabolic Syndrome and Oncogenesis. Int J Mol Sci 2021; 22:ijms22126337. [PMID: 34199293 PMCID: PMC8231835 DOI: 10.3390/ijms22126337] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/03/2021] [Accepted: 06/09/2021] [Indexed: 12/14/2022] Open
Abstract
Metabolic syndrome (MetS) represents a cluster of disorders that increase the risk of a plethora of conditions, in particular type two diabetes, cardiovascular diseases, and certain types of cancers. MetS is a complex entity characterized by a chronic inflammatory state that implies dysregulations of adipokins and proinflammatory cytokins together with hormonal and growth factors imbalances. Of great interest is the implication of microRNA (miRNA, miR), non-coding RNA, in cancer genesis, progression, and metastasis. The adipose tissue serves as an important source of miRs, which represent a novel class of adipokines, that play a crucial role in carcinogenesis. Altered miRs secretion in the adipose tissue, in the context of MetS, might explain their implication in the oncogenesis. The interplay between miRs expressed in adipose tissue, their dysregulation and cancer pathogenesis are still intriguing, taking into consideration the fact that miRNAs show both carcinogenic and tumor suppressor effects. The aim of our review was to discuss the latest publications concerning the implication of miRs dysregulation in MetS and their significance in tumoral signaling pathways. Furthermore, we emphasized the role of miRNAs as potential target therapies and their implication in cancer progression and metastasis.
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Affiliation(s)
- Adriana Fodor
- Department of Diabetes and Nutrtion, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
- Correspondence: (A.F.); (A.L.L.); (C.B.)
| | - Andrada Luciana Lazar
- Department of Dermatology, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
- Correspondence: (A.F.); (A.L.L.); (C.B.)
| | - Cristina Buchman
- Department of Oncology, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
- Correspondence: (A.F.); (A.L.L.); (C.B.)
| | - Brandusa Tiperciuc
- Department of Pharmaceutical Chemistry, “Iuliu Haţieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Olga Hilda Orasan
- Internal Medicine Department, 4th Medical Clinic “Iuliu Haţieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (O.H.O.); (A.C.)
| | - Angela Cozma
- Internal Medicine Department, 4th Medical Clinic “Iuliu Haţieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (O.H.O.); (A.C.)
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Zhao X, Ye N, Feng X, Ju H, Liu R, Lu W. MicroRNA-29b-3p Inhibits the Migration and Invasion of Gastric Cancer Cells by Regulating the Autophagy-Associated Protein MAZ. Onco Targets Ther 2021; 14:3239-3249. [PMID: 34040389 PMCID: PMC8140921 DOI: 10.2147/ott.s274215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/01/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose The purpose of this study was to investigate the relationship between microRNA-29b-3p (miR-29b-3p) and myc-associated zinc finger protein (MAZ) expression and the effects of this interaction on the proliferation, migration, and invasion of gastric cancer cells. Methods qPCR and Western blots were used to detect the expression of miR-29b-3p and MAZ. The dual luciferase reporter gene system was used to explore whether MAZ is the target of miR-29b-3p. Cell function experiments and a mouse tumorigenesis model were used to determine the effects of miR-29b-3p overexpression and MAZ depletion on proliferation, migration, and invasion in gastric cancer cell lines and on tumor growth. Results The expression level of miR-29b-3p was low and the expression level of MAZ was high in gastric cancer cells compared with normal human gastric mucosal epithelial cells. MAZ was the target gene of miR-29b-3p. The upregulation of miR-29b-3p reduces the expression of MAZ. Overexpression of miR-29b-3p and downregulation of MAZ inhibited the proliferation and migration of cancer cells and induced apoptosis by controlling the expression of autophagy-related proteins. MiR-29b-3p mimics inhibit tumor growth in mice. Conclusion MiR-29b-3p inhibits the migration and invasion of gastric cancer cells by regulating the autophagy-related protein MAZ.
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Affiliation(s)
- Xiaomeng Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, the People's Republic of China
| | - Nan Ye
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, the People's Republic of China
| | - Xueke Feng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, the People's Republic of China
| | - Haiyan Ju
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, the People's Republic of China
| | - Ruixia Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, the People's Republic of China
| | - Wenyu Lu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, the People's Republic of China.,Key Laboratory of System Bioengineering, Tianjin University, Tianjin, the People's Republic of China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, the People's Republic of China
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Locquet MA, Dechaume AL, Berchard P, Abbes L, Pissaloux D, Tirode F, Ramos I, Bedoucha J, Valantin J, Karanian M, Perret R, Gille O, Blay JY, Dutour A. Aldehyde Dehydrogenase, a Therapeutic Target in Chordoma: Analysis in 3D Cellular Models. Cells 2021; 10:cells10020399. [PMID: 33672032 PMCID: PMC7919493 DOI: 10.3390/cells10020399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/29/2021] [Accepted: 02/08/2021] [Indexed: 12/12/2022] Open
Abstract
Chordomas are rare, slow-growing tumors of the axial skeleton. These tumors are locally aggressive and refractory to conventional therapies. Radical surgery and radiation remain the first-line treatments. Despite these aggressive treatments, chordomas often recur and second-line treatment options are limited. The mechanisms underlying chordoma radioresistance remain unknown, although several radioresistant cancer cells have been shown to respond favorably to aldehyde dehydrogenase (ALDH) inhibition. The study of chordoma has been delayed by small patient cohorts and few available models due to the scarcity of these tumors. We thus created cellular 3D models of chordoma by using low-adherence culture systems. Then, we evaluated their radiosensitivity using colony-forming and spheroid size assays. Finally, we determined whether pharmacologically inhibiting ALDH increased their radiosensitivity. We found that 3D cellular models of chordoma (derived from primary, relapse, and metastatic tumors) reproduce the histological and gene expression features of the disease. The metastatic, relapse, and primary spheroids displayed high, medium, and low radioresistance, respectively. Moreover, inhibiting ALDH decreased the radioresistance in all three models.
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Affiliation(s)
- Marie-Anaïs Locquet
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
| | - Anne-Lise Dechaume
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
| | - Paul Berchard
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
| | - Lhorra Abbes
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
| | - Daniel Pissaloux
- Department of Biopathology, Centre Leon Berard, F-69008 Lyon, France;
- Team Genetics, Epigenetics and Biology of Sarcomas, Univ Lyon, Université Claude Bernard Lyon 1, INSERM1052, CNRS5286, Cancer Research Center of Lyon, Centre Leon Berard, F-69008 Lyon, France; (F.T.); (M.K.)
| | - Franck Tirode
- Team Genetics, Epigenetics and Biology of Sarcomas, Univ Lyon, Université Claude Bernard Lyon 1, INSERM1052, CNRS5286, Cancer Research Center of Lyon, Centre Leon Berard, F-69008 Lyon, France; (F.T.); (M.K.)
| | - Inès Ramos
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
| | - Julie Bedoucha
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
| | - Julie Valantin
- Research Pathology Platform, Department of Translational Research and Innovation, Centre Leon Berard, F-69008 Lyon, France;
- Fondation Synergie Lyon Cancer, F-69008 Lyon, France
| | - Marie Karanian
- Department of Biopathology, Centre Leon Berard, F-69008 Lyon, France;
- Team Genetics, Epigenetics and Biology of Sarcomas, Univ Lyon, Université Claude Bernard Lyon 1, INSERM1052, CNRS5286, Cancer Research Center of Lyon, Centre Leon Berard, F-69008 Lyon, France; (F.T.); (M.K.)
| | - Raul Perret
- Department of Biopathology, Institut Bergonié, F-33000 Bordeaux, France;
| | - Olivier Gille
- Orthopedic Spinal Surgery Unit 1, Bordeaux University Hospital, F-33000 Bordeaux, France;
| | - Jean-Yves Blay
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
- Medical Oncology Department, Centre Leon Berard, F-69008 Lyon, France
| | - Aurélie Dutour
- Team Cell Death and Pediatric Cancer, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008 Lyon, France; (M.-A.L.); (A.-L.D.); (P.B.); (L.A.); (I.R.); (J.B.); (J.-Y.B.)
- Correspondence:
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Yao J, Wu X. Upregulation Of miR-149-3p Suppresses Spinal Chordoma Malignancy By Targeting Smad3. Onco Targets Ther 2019; 12:9987-9997. [PMID: 31819495 PMCID: PMC6875263 DOI: 10.2147/ott.s222380] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/18/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose Dysregulation of miRNAs plays an important role in the malignancy of different tumors including chordoma. Expression of miR-149-3p was earlier reported to be downregulated in chordoma tissue. However, its biological role remains to be unrevealed in chordoma, especially in spinal chordoma. Methods Expression of miR-149-3p and Smad3 was detected by RT-qPCR and Western blot. Chordoma malignancy was evaluated by cell proliferation, migration, invasion, and apoptosis using MTT assay, transwell assay, flow cytometry analyzing apoptosis rate, and Western blot-determined expression of Bcl-2, Bax, and cleaved caspase 3, respectively. The target binding between miR-149-3p and Smad3 was predicted by TargetScan Human website and confirmed by luciferase reporter assay and RNA immunoprecipitation. Xenograft tumors were generated, and expression of miR-149-3p and Smad3 was investigated in vivo. Results miR-149-3p was downregulated in spinal chordoma tissues and cells, and its overexpression promoted chordoma cell apoptosis and inhibited proliferation, migration, and invasion in U-CH1 and MUG-Chor1 cells. Unexpectedly, Smad3 was a downstream target of miR-149-3p and negatively correlated with miR-149-3p expression in chordoma tissues. Besides, Smad3 was upregulated in chordoma tissues and its silencing had a similar effect as miR-149-3p overexpression in U-CH1 and MUG-Chor1 cells. Moreover, Smad3 upregulation could partially reverse the tumor-suppressive effect of miR-149-3p in chordoma cells. In vivo, the tumorigenesis of U-CH1 and MUG-Chor1 cells was impaired by upregulated miR-149-3p through decreasing Smad3 expression. Conclusion miR-149-3p could serve as a tumor suppressor in spinal chordoma through targeting and downregulating Smad3.
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Affiliation(s)
- Jie Yao
- Department of Spine, The Orthopedic Hospital of Zhengzhou, Zhengzhou, Henan 450099, People's Republic of China
| | - Xuejian Wu
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, People's Republic of China
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