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Bou Zerdan M, Atoui A, Hijazi A, Basbous L, Abou Zeidane R, Alame SM, Assi HI. Latest updates on cellular and molecular biomarkers of gliomas. Front Oncol 2022; 12:1030366. [PMID: 36425564 PMCID: PMC9678906 DOI: 10.3389/fonc.2022.1030366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/05/2022] [Indexed: 03/05/2024] Open
Abstract
Gliomas are the most common central nervous system malignancies, compromising almost 80% of all brain tumors and is associated with significant mortality. The classification of gliomas has shifted from basic histological perspective to one that is based on molecular biomarkers. Treatment of this type of tumors consists currently of surgery, chemotherapy and radiation therapy. During the past years, there was a limited development of effective glioma diagnostics and therapeutics due to multiple factors including the presence of blood-brain barrier and the heterogeneity of this type of tumors. Currently, it is necessary to highlight the advantage of molecular diagnosis of gliomas to develop patient targeted therapies based on multiple oncogenic pathway. In this review, we will evaluate the development of cellular and molecular biomarkers for the diagnosis of gliomas and the impact of these diagnostic tools for better tailored and targeted therapies.
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Affiliation(s)
- Maroun Bou Zerdan
- Department of Internal Medicine, State University of New York (SUNY) Upstate Medical University, Syracuse, NY, United States
| | - Ali Atoui
- Hematology-Oncology Division, Internal Medicine Department, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ali Hijazi
- Hematology-Oncology Division, Internal Medicine Department, American University of Beirut Medical Center, Beirut, Lebanon
| | - Lynn Basbous
- Hematology-Oncology Division, Internal Medicine Department, American University of Beirut Medical Center, Beirut, Lebanon
| | - Reine Abou Zeidane
- Hematology-Oncology Division, Internal Medicine Department, American University of Beirut Medical Center, Beirut, Lebanon
| | - Saada M Alame
- Department of Pediatrics, Faculty of Medicine, Lebanese University, Beirut, Lebanon
| | - Hazem I Assi
- Hematology-Oncology Division, Internal Medicine Department, American University of Beirut Medical Center, Beirut, Lebanon
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Ghasemian M, Rajabibazl M, Sahebi U, Sadeghi S, Maleki R, Hashemnia V, Mirfakhraie R. Long non-coding RNA MIR4435-2HG: a key molecule in progression of cancer and non-cancerous disorders. Cancer Cell Int 2022; 22:215. [PMID: 35715800 PMCID: PMC9205143 DOI: 10.1186/s12935-022-02633-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/11/2022] [Indexed: 12/18/2022] Open
Abstract
MIR4435-2HG (LINC00978) is a long non-coding RNA (lncRNA) that acts as an oncogene in almost all cancers. This lncRNA participates in the molecular cascades involved in other disorders such as coronary artery diseases, osteonecrosis, osteoarthritis, osteoporosis, and periodontitis. MIR4435-2HG exerts its functions via the spectrum of different mechanisms, including inhibition of apoptosis, sponging microRNAs (miRNAs), promoting cell proliferation, increasing cell invasion and migration, and enhancing epithelial to mesenchymal transition (EMT). MIR4435-2HG can regulate several signaling pathways, including Wnt, TGF-β/SMAD, Nrf2/HO-1, PI3K/AKT, MAPK/ERK, and FAK/AKT/β‑catenin signaling pathways; therefore, it can lead to tumor progression. In the present review, we aimed to discuss the potential roles of lncRNA MIR4435-2HG in developing cancerous and non-cancerous conditions. Due to its pivotal role in different disorders, this lncRNA can serve as a potential biomarker in future investigations. Moreover, it may serve as a potential therapeutic target for the treatment of various diseases.
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Affiliation(s)
- Majid Ghasemian
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Rajabibazl
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Unes Sahebi
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Samira Sadeghi
- Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran
| | - Reza Maleki
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Veys Hashemnia
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Mirfakhraie
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Tian W, Chen K, Yan G, Han X, Liu Y, Zhang Q, Liu M. A Novel Prognostic Tool for Glioma Based on Enhancer RNA-Regulated Immune Genes. Front Cell Dev Biol 2022; 9:798445. [PMID: 35127714 PMCID: PMC8811171 DOI: 10.3389/fcell.2021.798445] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/30/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Gliomas are the most malignant tumors of the nervous system. Even though their survival outcome is closely affected by immune-related genes (IRGs) in the tumor microenvironment (TME), the corresponding regulatory mechanism remains poorly characterized. Methods: Specific enhancer RNAs (eRNAs) can be found in tumors, where they control downstream genes. The present study aimed to identify eRNA-regulated IRGs, evaluate their influence on the TME, and use them to construct a novel prognostic model for gliomas. Results: Thirteen target genes (ADCYAP1R1, BMP2, BMPR1A, CD4, DDX17, ELN, FGF13, MAPT, PDIA2, PSMB8, PTPN6, SEMA6C, and SSTR5) were identified and integrated into a comprehensive risk signature, which distinguished two risk subclasses. Discrepancies between these subclasses were compared to explore potential mechanisms attributed to eRNA-regulated genes, including immune cell infiltration, clinicopathological features, survival outcomes, and chemotherapeutic drug sensitivity. Furthermore, the risk signature was used to construct a prognostic tool that was evaluated by calibration curve, clinical utility, Harrell’s concordance index (0.87; 95% CI: 0.84–0.90), and time-dependent receiver operator characteristic curves (AUCs: 0.93 and 0.89 at 3 and 5 years, respectively). The strong reliability and robustness of the established prognostic tool were validated in another independent cohort. Finally, potential subtypes were explored in patients with grade III tumors. Conclusion: Overall, eRNAs were associated with immune-related dysfunctions in the TME. Targeting of IRGs regulated by eRNAs could improve immunotherapeutic/therapeutic outcomes.
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Affiliation(s)
- Wei Tian
- Department of Biostatistics, School of Public Health, Harbin Medical University, Harbin, China
| | - Kegong Chen
- Department of Cardio-Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guangcan Yan
- Department of Biostatistics, School of Public Health, Harbin Medical University, Harbin, China
| | - Xinhao Han
- Department of Biostatistics, School of Public Health, Harbin Medical University, Harbin, China
| | - Yanlong Liu
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Qiuju Zhang
- Department of Biostatistics, School of Public Health, Harbin Medical University, Harbin, China
| | - Meina Liu
- Department of Biostatistics, School of Public Health, Harbin Medical University, Harbin, China
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Fan B, Su B, Song G, Liu X, Yan Z, Wang S, Hu F, Yang J. miR-363-3p induces EMT via the Wnt/β-catenin pathway in glioma cells by targeting CELF2. J Cell Mol Med 2021; 25:10418-10429. [PMID: 34636136 PMCID: PMC8581338 DOI: 10.1111/jcmm.16970] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/17/2021] [Accepted: 09/23/2021] [Indexed: 01/05/2023] Open
Abstract
In our previous study, we reported that CELF2 has a tumour‐suppressive function in glioma. Here, we performed additional experiments to elucidate better its role in cancer. The expression profile of CELF2 was analysed by the GEPIA database, and Kaplan–Meier curves were used to evaluate the overall survival rates. Four different online databases were used to predict miRNAs targeting CELF2, and the luciferase assay was performed to identify the binding site. The biological effects of miR‐363‐3p and CELF2 were also investigated in vitro using MTT, Transwell, and flow cytometry assays. Western blotting, qPCR, and TOP/FOP flash dual‐luciferase assays were performed to investigate the impact of miR‐363‐3p and CELF2 on epithelial‐to‐mesenchymal transition (EMT) and the Wnt/β‐catenin pathway. The effect of miR‐363‐3p was also tested in vivo using a xenograft mouse model. We observed an abnormal expression pattern of CELF2 in glioma cells, and higher CELF2 expression correlated with better prognosis. We identified miR‐363‐3p as an upstream regulator of CELF2 and confirmed its direct binding to the 3′‐untranslated region of CELF2. Cell function experiments showed that miR‐363‐3p affected multiple aspects of glioma cells. Suppressing miR‐363‐3p expression inhibited glioma cell proliferation and invasion, as well as promoted cell death via attenuating EMT and blocking the Wnt/β‐catenin pathway. These effects could be abolished by the downregulation of CELF2. Treatment with ASO‐miR‐363‐3p decreased tumour size and weight in nude mice. In conclusion, miR‐363‐3p induced the EMT, which resulted in increased migration and invasion and reduced apoptosis in glioma cell lines, via the Wnt/β‐catenin pathway by targeting CELF2.
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Affiliation(s)
- Bo Fan
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
| | - Bolun Su
- Department of urology, The Second Hospital of Baoding, Hebei, China
| | - Guoqiang Song
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
| | - Xin Liu
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
| | - Zhongjie Yan
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
| | - Shuai Wang
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
| | - Fuguang Hu
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
| | - Jiankai Yang
- Department of neurosurgery, The Second Affiliated Hospital, Hebei Medical University, Hebei, China
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LncRNA ANCR promotes glioma cells invasion, migration, proliferation and inhibits apoptosis via interacting with EZH2 and repressing PTEN expression. Cancer Gene Ther 2021; 28:1025-1034. [PMID: 33293663 DOI: 10.1038/s41417-020-00263-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 10/12/2020] [Accepted: 11/11/2020] [Indexed: 01/30/2023]
Abstract
Recently, the role of long noncoding RNA (lncRNA) has been identified in human diseases, and we aim to explore the role of lncRNA antidifferentiation noncoding RNA (ANCR) in glioma. Expression of lncRNA ANCR, enhancer of zeste homolog 2 (EZH2), and phosphatase and tensin homolog (PTEN) in glioma tissues and cells was determined by RT-PCR or western blot assay. The correlation between expression of ANCR, EZH2, and PTEN in glioma tissues was analyzed using Pearson test. The apoptosis, transwell invasion, migration, colony formation, and proliferation assays were conducted to evaluate the influences of lncRNA ANCR depletion, EZH2 reduction, or PTEN elevation on the cell biology of glioma cells. The relationships between ANCR and EZH2, and between EZH2 and PTEN were confirmed through RIP, RNA pull-down, and chromatin immunoprecipitation assays. Our results indicated that ANCR and EZH2 were upregulated and PTEN was downregulated in glioma tissues and cell lines. ANCR expression was positively related to EZH2 expression, while PTEN expression was negatively related to ANCR/EZH2 expression. Inhibited ANCR, reduced EZH2, or elevated PTEN could reduce the ability of invasion, migration, and proliferation, and promote apoptosis of glioma cells. PTEN overexpression or EZH2 inhibition reversed the promotive role of ANCR upregulation in glioma cell growth and metastasis. Mechanistically, PTEN was upregulated in ANCR knockdown glioma cells. EZH2 interacted with ANCR in glioma cells. In conclusion, we have found that restrained ANCR could repress invasion, migration, and proliferation, as well as promote apoptosis of glioma cells through interacting with EZH2 and regulating the expression of PTEN, offering an effective therapeutic target for patients with glioma.
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Wang Z, Liu Q, Huang P, Cai G. miR-299-3p suppresses cell progression and induces apoptosis by downregulating PAX3 in gastric cancer. Open Life Sci 2021; 16:266-276. [PMID: 33817318 PMCID: PMC8005920 DOI: 10.1515/biol-2021-0022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 09/11/2020] [Accepted: 10/06/2020] [Indexed: 12/17/2022] Open
Abstract
Gastric cancer (GC) is ranked the fourth leading cause of cancer-related death, with an over 75% mortality rate worldwide. In recent years, miR-299-3p has been identified as a biomarker in multiple cancers, such as acute promyelocytic leukemia, thyroid cancer, and lung cancer. However, the regulatory mechanism of miR-299-3p in GC cell progression is still largely unclear. Cell viability and apoptosis tests were performed by CCK8 and flow cytometry assay, respectively. Transwell assay was recruited to examine cell invasion ability. The interaction between miR-299-3p and PAX3 was determined by the luciferase reporter system. PAX3 protein level was evaluated by western blot assay. The expression of miR-299-3p was downregulated in GC tissues and cell lines (MKN-45, AGS, and MGC-803) compared with the normal tissues and cells. Besides, overexpression of miR-299-3p significantly suppressed proliferation and invasion and promoted apoptosis in GC. Next, we clarified that PAX3 expression was regulated by miR-299-3p using a luciferase reporter system, qRT-PCR, and western blot assay. Additionally, downregulation of PAX3 repressed GC cell progression. The rescue experiments indicated that restoration of PAX3 inversed miR-299-3p-mediated inhibition on cell proliferation and invasion. miR-299-3p suppresses cell proliferation and invasion as well as induces apoptosis by regulating PAX3 expression in GC, representing desirable biomarkers for GC diagnosis and therapy.
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Affiliation(s)
- Zhenfen Wang
- Department of Gastrointestinal Surgery, Hainan General Hospital, No. 19 Xiuhua Rd, Xiuying District, 570311, Haikou, Hainan, China
| | - Qing Liu
- Department of Gastrointestinal Surgery, Hainan General Hospital, No. 19 Xiuhua Rd, Xiuying District, 570311, Haikou, Hainan, China
| | - Ping Huang
- Department of Gastrointestinal Surgery, Hainan General Hospital, No. 19 Xiuhua Rd, Xiuying District, 570311, Haikou, Hainan, China
| | - Guohao Cai
- Department of Gastrointestinal Surgery, Hainan General Hospital, No. 19 Xiuhua Rd, Xiuying District, 570311, Haikou, Hainan, China
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Song T, Hu Z, Liu J, Huang W. FLOT2 upregulation promotes growth and invasion by interacting and stabilizing EphA2 in gliomas. Biochem Biophys Res Commun 2021; 548:67-73. [PMID: 33631676 DOI: 10.1016/j.bbrc.2021.02.062] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 02/14/2021] [Indexed: 12/13/2022]
Abstract
The expression and roles of FLOT2, especially for its underlying mechanism, in gliomas have been rarely revealed. In this study, upregulations of both FLOT2 and EphA2 in gliomas tissues were validated by immunohistochemistry (IHC) staining and Western blot. FLOT2 silencing notably inhibited the growth and invasion of gliomas cells. Simultaneously, FLOT2 depletion suppressed Akt and NF-κB activities, induced apoptosis, cell cycle arrest, and epithelial-mesenchymal transition (EMT) inhibition, demonstrated by expression alterations of key proteins of the above processes. Mechanistically, FLOT2 could maintain EphA2 stability viainteraction, and restoration of EphA2 could remarkably release the suppressive effects on gliomas cells induced by FLOT2 knockdown. Lastly, FLOT2 and EphA2, whose protein and mRNA levels are both positively correlated in gliomas, shows significant association with clinical characteristics like Ki67 intensity, p53 expression, and tumor stage in patients with gliomas. In conclusion, our results reveal the upregulation, oncogenic roles of FLOT2, and the corresponding underlying mechanism in gliomas, highlighting that the FLOT2-EphA2 axis is served as a promising therapeutic target for gliomas.
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Affiliation(s)
- Tao Song
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhongxu Hu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jie Liu
- Department of Pathology, Changsha Central Hospital, Changsha, Hunan, China
| | - Wei Huang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Center of Carcinogenesis and Targeted Therapy, Xiangya Hospital, Changsha, Hunan, China.
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Abstract
Flotillins 1 and 2 are two ubiquitous, highly conserved homologous proteins that assemble to form heterotetramers at the cytoplasmic face of the plasma membrane in cholesterol- and sphingolipid-enriched domains. Flotillin heterotetramers can assemble into large oligomers to form molecular scaffolds that regulate the clustering of at the plasma membrane and activity of several receptors. Moreover, flotillins are upregulated in many invasive carcinomas and also in sarcoma, and this is associated with poor prognosis and metastasis formation. When upregulated, flotillins promote plasma membrane invagination and induce an endocytic pathway that allows the targeting of cargo proteins in the late endosomal compartment in which flotillins accumulate. These late endosomes are not degradative, and participate in the recycling and secretion of protein cargos. The cargos of this Upregulated Flotillin–Induced Trafficking (UFIT) pathway include molecules involved in signaling, adhesion, and extracellular matrix remodeling, thus favoring the acquisition of an invasive cellular behavior leading to metastasis formation. Thus, flotillin presence from the plasma membrane to the late endosomal compartment influences the activity, and even modifies the trafficking and fate of key protein cargos, favoring the development of diseases, for instance tumors. This review summarizes the current knowledge on flotillins and their role in cancer development focusing on their function in cellular membrane remodeling and vesicular trafficking regulation.
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Yue X, Dong C, Ye Z, Zhu L, Zhang X, Wang X, Mo F, Li Z, Pan B. LncRNA SNHG7 sponges miR-449a to promote pituitary adenomas progression. Metab Brain Dis 2021; 36:123-132. [PMID: 32880813 DOI: 10.1007/s11011-020-00611-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/21/2020] [Indexed: 02/04/2023]
Abstract
This study aimed to characterize the expression status and potentially mechanistic involvement of SNHG7 in pituitary adenoma. Relative expression of SNHG7 and miR-449a was analyzed by real-time PCR. Cell viability was measured with Cell Counting Kit-8 (CCK-8). Cell apoptosis was determined by PI/Annexin V double staining followed by flow cytometry analysis. Cell invasion and migration were analyzed by wound healing and transwell assays, respectively. The regulatory action of miR-449a on SNHG7 was interrogated by luciferase reporter assay. We also investigated the pro-tumor activity of SNHG7 with the MMQ xenograft tumor mouse model. We identified the aberrant up-regulation of SNHG7 in pituitary adenoma both in vivo and in vitro, which associated with poor survival outcome. siRNA-mediated SNHG7-knockdown decreased cell viability, increased apoptosis and compromised migration and invasion. We further predicted and validated that SNHG7 negatively regulated miR-449a via sponging. Concurrent inhibition of miR-449a restored cell viability, apoptosis, migration and invasion influenced by SNHG7-deficiency. Most importantly, we demonstrated that SNHG7-silencing delayed xenograft tumor progression, which was accompanied with increased miR-449a and decreased Ki67 intensity. Our study highlighted the essential oncogenic properties of the SNHG7/miR-449a axis in pituitary adenoma.
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Affiliation(s)
- Xiongfei Yue
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Ce Dong
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Zhanying Ye
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Lin Zhu
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Xiaoyang Zhang
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Xiaoyan Wang
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Feng Mo
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Zheng Li
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Baogen Pan
- Neurosurgery Department, Hebei General Hospital, NO.348 Heping West Road, Shijiazhuang, 050000, Hebei, China.
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Zhang X, Zheng W, Jiang W, Lin R, Xing C. Long non-coding RNA SNHG3 accelerates progression in glioma by modulating miR-384/HDGF axis. Open Life Sci 2020; 15:654-664. [PMID: 33817254 PMCID: PMC7747505 DOI: 10.1515/biol-2020-0066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 05/21/2020] [Accepted: 05/21/2020] [Indexed: 12/14/2022] Open
Abstract
Glioma is a malignant primary brain tumor that occurs in the central nervous system and has threatened the well-being of millions of patients. It is well acknowledged that long non-coding RNA (lncRNA) SNHG3 participates in the regulation of proliferation, inflation, differentiation, and metastasis in many cancers. However, the regulatory effect of SNHG3 on glioma progression is still controversial. The expression of SNHG3 and HDGF was upregulated, whereas miR-384 was downregulated in glioma tissues, compared with the normal tissues. Interestingly, high SNHG3 contributed to low survival rate while low SNHG3 showed the opposite result. Moreover, SNHG3 or HDGF knockdown significantly suppressed proliferation, migration, and invasion and induced apoptosis in glioma. Meanwhile, restoration of HDGF abrogated the inhibition of SNHG3 silencing on glioma cell progression. Besides, miR-384 inhibitor attenuated SNHG3 silencing induced inhibition on HDGF mRNA and protein expression in A172 and SHG44 cells. LncRNA SNHG3 promotes cell proliferation, migration, and invasion in glioma by enhancing HDGF expression via miR-384 sponging, representing the promising targets for the development of novel therapeutic strategies.
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Affiliation(s)
- Xiaofeng Zhang
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian, China
| | - Weixin Zheng
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian, China
| | - Wenting Jiang
- Department of Ultrasound, Zhangzhou Affiliated Hospital of Fujian Medical University, No. 59 Shengli Road, Zhangzhou, Fujian, China
| | - Ruisheng Lin
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian, China
| | - Chunyang Xing
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian, China
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Xiao B, Zhang X, Li X, Zhao Z. Circ_001569 regulates FLOT2 expression to promote the proliferation, migration, invasion and EMT of osteosarcoma cells through sponging miR-185-5p. Open Life Sci 2020; 15:476-487. [PMID: 33817236 PMCID: PMC7874578 DOI: 10.1515/biol-2020-0050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 04/16/2020] [Accepted: 04/23/2020] [Indexed: 12/19/2022] Open
Abstract
Osteosarcoma (OS) is a common malignant tumor in the world. Circular RNAs are endogenous non-coding RNAs that have been linked to the development of cancer. However, the role of circ_001569 in OS progression is still unclear. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of circ_001569, microRNA-185-5p (miR-185-5p) and flotillin-2 (FLOT2). The abilities of cell proliferation, migration and invasion were evaluated by the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and Transwell assays, respectively. Also, western blot analysis was performed to assess the levels of epithelial-mesenchymal transition (EMT)-related proteins and FLOT2 protein. Besides, the dual-luciferase reporter assay was used to verify the interactions among circ_001569, miR-185-5p and FLOT2. Circ_001569 expression was increased in OS tissues and cells, and its knockdown reduced the proliferation, migration, invasion and EMT of OS cells. MiR-185-5p could interact with circ_001569. Inhibition of miR-185-5p could recover the suppression effects of silenced-circ_001569 on the proliferation and metastasis of OS cells. Furthermore, FLOT2 was a target of miR-185-5p. Overexpressed FLOT2 could restore the inhibition effects of miR-185-5p mimic on the proliferation and metastasis of OS cells. Also, FLOT2 expression was regulated by circ_001569 and miR-185-5p. In addition, circ_001569 knockdown also reduced the OS tumor growth in vivo. Circ_001569 might act as an oncogene in OS progression by regulating the miR-185-5p/FLOT2 axis, which provided a reliable new approach for the treatment of OS patients.
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Affiliation(s)
- Bin Xiao
- Department of Orthopaedic, Second People’s Hospital of Gansu Province, No. 1 Hezheng West Street, Chengguan District, Lanzhou City, Gansu Province, 730000, China
| | - Xusheng Zhang
- Department of General Surgery, Second People’s Hospital of Gansu Province, 730000, Lanzhou, Gansu, China
| | - Xiaojuan Li
- Department of Endocrine, Second People’s Hospital of Gansu Province, 730000, Lanzhou, Gansu, China
| | - Zhipeng Zhao
- Department of Orthopaedic, Second People’s Hospital of Gansu Province, No. 1 Hezheng West Street, Chengguan District, Lanzhou City, Gansu Province, 730000, China
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12
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Xu Z, Wang T, Song H, Jiang X. Flotillin-2 predicts poor prognosis and promotes tumor invasion in intrahepatic cholangiocarcinoma. Oncol Lett 2020; 19:2243-2250. [PMID: 32194722 PMCID: PMC7039164 DOI: 10.3892/ol.2020.11349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 01/14/2020] [Indexed: 12/12/2022] Open
Abstract
Intrahepatic cholangiocarcinoma (iCCA) is a highly malignant neoplasm arising from the intrahepatic bile ducts. As a scaffold protein of lipid rafts, flotillin-2 is upregulated in several types of cancer and promotes tumor progression and metastasis. To the best of our knowledge, the present study was the first to detect the upregulation of flotillin-2 in iCCA tissues compared with matched adjacent non-tumor tissues. In addition, immunohistochemistry was used to investigate the expression of flotillin-2 in a microarray consisting of 92 iCCA tissues. A total of 59 samples (64.1%) exhibited high flotillin-2 expression, which was significantly related to lymph node metastasis (P=0.029) and tumor-node-metastasis stage (P=0.016). Further in vitro study demonstrated that knockdown of flotillin-2 inhibited the invasive capability of iCCA cell lines, further supporting the participation of flotillin-2 in cancer invasion and metastasis. Moreover, Kaplan-Meier analysis showed patients with high flotillin-2 expression had worse overall survival outcomes. The multivariate Cox proportional hazards model further revealed that high flotillin-2 expression was an independent indicator (P=0.005) of poor prognosis for patients with iCCA. Collectively, the present study revealed that as a promoter of invasion and an independent marker of poor prognosis, flotillin-2 may serve as a potential target for the development of novel therapeutic agents for iCCA.
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Affiliation(s)
- Zhiying Xu
- Department of Nuclear Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264001, P.R. China
| | - Tao Wang
- Department of Interventional Therapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264001, P.R. China
| | - Haiyang Song
- Department of Interventional Therapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264001, P.R. China
| | - Xuewen Jiang
- Department of Nuclear Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264001, P.R. China
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Wang K, Yang S, Gao Y, Zhang C, Sui Q. MicroRNA-769-3p inhibits tumor progression in glioma by suppressing ZEB2 and inhibiting the Wnt/β-catenin signaling pathway. Oncol Lett 2019; 19:992-1000. [PMID: 31897212 PMCID: PMC6924179 DOI: 10.3892/ol.2019.11135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 11/01/2019] [Indexed: 02/06/2023] Open
Abstract
Accumulating evidence suggests the crucial role of microRNAs (miRNAs) in human cancers. The present study aimed to investigate the clinical and functional roles of miR-769-3p in glioma, as well as the underlying molecular mechanisms. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to determine the expression levels of miR-769-3p in glioma tissues and cells. Receiver operating characteristic (ROC) curve analysis was applied to calculate the diagnostic value of miR-769-3p. The 5-year survival rate of patients was calculated using Kaplan-Meier analysis and Cox regression analysis. Cell experiments were used to investigate the functional role of miR-769-3p in glioma. The gene target of miR-769-3p was predicted by TargetScan. Changes in the levels of Wnt signaling-related proteins were measured by western blotting. miR-769-3p was significantly downregulated in glioma tissues and serum, as well as in glioma cell lines (P<0.001). miR-769-3p expression was significantly associated with the World Health Organization grade and Karnofsky performance score. The ROC curves demonstrated that serum miR-769-3p level reliably distinguished patients with glioma from healthy individuals. High tissue miR-769-3p expression predicted poor overall survival in patients with glioma (log-rank P=0.001) and was identified as an independent prognostic factor. In addition, zinc finger E-box binding homeobox 2 (ZEB2) was demonstrated to be a direct target of miR-769-3p in glioma cells using a luciferase assay. miR-769-3p upregulation suppressed the activity of the Wnt/β-catenin signaling pathway in glioma cells. In conclusion, miR-769-3p may serve as a diagnostic and prognostic biomarker in patients with glioma and target ZEB2 to inhibit tumor progression via the Wnt/β-catenin signaling pathway. miR-769-3p may be a novel therapeutic target for the treatment of glioma.
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Affiliation(s)
- Kai Wang
- Department of Neurosurgery, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Shasha Yang
- Department of Burns, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Yishen Gao
- Department of Neurosurgery, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Caihong Zhang
- Department of Ultrasound, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Qiangbo Sui
- Department of Neurosurgery, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
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