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Shao Y, Yang Z, Miao W, Yu X, Pu Y. Circ_0005015 upregulates BACH1 to promote aggressive behaviors in glioblastoma by sponging microRNA-382-5p. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:4139-4151. [PMID: 38032493 DOI: 10.1007/s00210-023-02868-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023]
Abstract
To investigate the potential role and molecular mechanism of circ_0005015 in GBM progression. Circ_0005015, microRNA-382-5p (miR-382-5p), and BTB domain and CNC homolog 1 (BACH1) levels were measured by real-time quantitative polymerase chain reaction (RT-qPCR). Cell proliferation was determined by MTT, colony formation, and EdU assays. Cell apoptosis was analyzed using flow cytometry. Cell migration and invasion were assessed using wound healing and transwell assays. Glucose accumulation and lactate levels were examined by the corresponding kit. RNA pull-down and dual-luciferase reporter assays were performed to confirm the interaction between miR-382-5p and circ_0005015 or BACH1. Protein levels of MMP9, PCNA, and BACH1 were examined using western blot assay. Role of circ_0005015 on tumor growth in vivo was analyzed using a xenograft tumor model. Circ_0005015 content was up-regulated in GBM patients and cells, its knockdown restrained GBM cell proliferation, migration, invasion, glycolysis, and triggered apoptosis. Mechanistically, we found that circ_0005015 could directly interact with miR-382-5p and serve as a miRNA sponge to regulate BACH1 expression. In addition, circ_0005015 knockdown might repress tumor growth in vivo. Circ_0005015 boosted GBM progression via binding to miR-382-5p to up-regulate BACH1, which may offer new effective targets for GBM treatment.
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Affiliation(s)
- Yun Shao
- Department of Neurosurgery, the Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi, 214023, China
- Wuxi Medical Center, Nanjing Medical University, Wuxi, China
| | - Zhengxiang Yang
- Department of Neurosurgery, the Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi, 214023, China
| | - Weifeng Miao
- Department of Neurosurgery, the Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi, 214023, China
| | - Xiangrong Yu
- Department of Neurosurgery, the Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi, 214023, China
| | - Yi Pu
- Department of Neurosurgery, the Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi, 214023, China.
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Xuan F, Zhang Z, Liu K, Gong H, Liang S, Zhao Y, Li H. Constructing a signature based on the SIRT family to help the prognosis and treatment sensitivity in glioma patients. Front Genet 2022; 13:1035368. [PMID: 36568393 PMCID: PMC9780371 DOI: 10.3389/fgene.2022.1035368] [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: 09/02/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022] Open
Abstract
Enzymes of the silent information regulator (SIRT) family exert crucial roles in basic cellular physiological processes including apoptosis, metabolism, ageing, and cell cycle progression. They critically contribute to promoting or inhibiting cancers such as glioma. In the present study, a new gene signature of this family was identified for use in risk assessment and stratification of glioma patients. To this end, the transcriptome and relevant clinical records of patients diagnosed with glioma were obtained from the Cancer Genomic Atlas (TCGA) and the Chinese Glioma Genome Atlas (CGGA). LASSO regression and multivariate Cox analyses were used to establish the signature. Using Kaplan-Meier analyses, overall survival (OS) was assessed and compared between a training and an external test datasets which showed lower OS in patients with high risk of glioma compared to those with low risk. Further, ROC curve analyses indicated that the SIRT-based signature had the desired accuracy and universality for evaluating the prognosis of glioma patients. Using univariate and multivariate Cox regression analyses, the SIRT-based signature was confirmed as an independent prognostic factor applicable to subjects in the TCGA and CGGA databases. We also developed an OS nomogram including gender, age, risk score, pathological grade, and IDH status for clinical decision-making purposes. ssGSEA analysis showed a higher score for various immune subgroups (e.g., CD8+ T cells, DC, and TIL) in samples from high-risk patients, compared to those of low-risk ones. qPCR and western blotting confirmed the dysregulated expression of SIRTs in gliomas. Taken together, we developed a new signature on the basis of five SIRT family genes, which can help accurately predict OS of glioma patients. In addition, the findings of the present study suggest that this characteristic is associated with differences in immune status and infiltration levels of various immune cells in the tumor microenvironment.
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Affiliation(s)
- Feiyue Xuan
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Zhiwei Zhang
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Kuili Liu
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Haidong Gong
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China,Heilongjiang Provincial Key Laboratory of Cancer Disease Prevention and Control, Mudanjiang Medical University, Mudanjiang, China
| | - Shaodong Liang
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Youzhi Zhao
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Hongzhe Li
- Department of Neurosurgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China,*Correspondence: Hongzhe Li,
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Yuan F, Zhang S, Sun Q, Ye L, Xu Y, Xu Z, Deng G, Zhang S, Liu B, Chen Q. Hsa_circ_0072309 enhances autophagy and TMZ sensitivity in glioblastoma. CNS Neurosci Ther 2022; 28:897-912. [PMID: 35212145 PMCID: PMC9062556 DOI: 10.1111/cns.13821] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 01/28/2022] [Accepted: 02/08/2022] [Indexed: 01/02/2023] Open
Abstract
Aims Circular RNAs have been reported to play key roles in the progression of various cancers, including gliomas. The present study was designed to investigate the role of hsa_circ_0072309 in autophagy and temozolomide (TMZ) sensitivity in glioblastoma (GBM). Methods The effect of hsa_circ_0072309 on autophagy and TMZ sensitivity were examined by GFP‐RFP‐LC3, transmission electron microscopy(TEM), flow cytometry, Western blot, and immunofluorescence. The mechanism of hsa_circ_0072309 regulating p53 signaling pathway was analyzed using Western blot, IP, and rescue experiments. Results Low hsa_circ_0072309 expression predicts poor prognosis for glioma patients. The regulation of hsa_circ_0072309 on autophagy and TMZ sensitivity depends on the status of p53. Hsa_circ_0072309 promoted autophagy by p53 signaling pathway and enhanced sensitivity of glioblastoma to temozolomide (TMZ) in p53 wild‐type GBM, but not in p53 mutant GBM. Hsa_circ_0072309 inhibits p53 ubiquitination and increases the stability of p53 protein in the context of p53 wild‐type. MiR‐100 mediates hsa_circ_0072309 regulating p53. P53 inhibitor or autophagy inhibitor could reverse the effect of hsa_circ_0072309 on TMZ sensitivity in p53 wild‐type GBM. Conclusions This study revealed a function of hsa_circ_0072309 promoting autophagy by p53 signaling pathway and enhancing TMZ sensitivity. These findings demonstrated that hsa_circ_0072309 may be a potential and promising target in designing the treatment strategy for GBM.
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Affiliation(s)
- Fanen Yuan
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Si Zhang
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qian Sun
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Liguo Ye
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yang Xu
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhou Xu
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Gang Deng
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shenqi Zhang
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Baohui Liu
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qianxue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
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Zhou Q, Fu Q, Shaya M, Kugeluke Y, Li S, Dilimulati Y. Knockdown of circ_0055412 promotes cisplatin sensitivity of glioma cells through modulation of CAPG and Wnt/β-catenin signaling pathway. CNS Neurosci Ther 2022; 28:884-896. [PMID: 35332692 PMCID: PMC9062567 DOI: 10.1111/cns.13820] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 01/20/2022] [Accepted: 02/09/2022] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION Glioma is the most frequent primary cerebral tumor in adults. Recent evidence has suggested that circular RNAs (circRNAs) are associated with the pathological processes in glioma. In our study, we aimed to investigate the function and mechanism of circ_CAPG (circ_0055412) in glioma. METHODS Firstly, circ_0055412 expression was examined through RT-qPCR analysis. Loss-of-function assays and animal experiments were implemented to evaluate the role of circ_0055412 on cisplatin resistance of glioma cells. Moreover, mechanism assays were done to probe into the regulatory mechanism of circ_0055412 in glioma cells. RESULTS Circ_0055412 was found to be notably upregulated in glioma cells. Moreover, depletion of circ_0055412 enhanced cisplatin sensitivity of glioma cells in vitro and in vivo. Moreover, circ_0055412 recruited eukaryotic translation initiation factor 4A3 (EIF4A3) protein to stabilize capping actin protein, gelsolin like (CAPG) mRNA. Furthermore, circ_0055412 served as a sponge for microRNA-330-3p (miR-330-3p) and regulated nuclear factor of activated T cells 3 (NFATC3) expression to activate the transcription of catenin beta 1 (CTNNB1), thus participating in the activation of Wnt/β-catenin signaling pathway. CONCLUSION Circ_0055412 contributed to cisplatin resistance of glioma cells via stabilizing CAPG mRNA and modulating Wnt/β-catenin signaling pathway. This finding might provide novel information for the treatment of glioma.
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Affiliation(s)
- Qingjiu Zhou
- Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Qiang Fu
- Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Mahati Shaya
- Department of Oncology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Yalikun Kugeluke
- Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Shaoshan Li
- Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Yisireyili Dilimulati
- Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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Qian Y, Cheng B, Luo J, Hu Y, Gao L, Cheng H. CircRFX3 Up-regulates Its Host Gene RFX3 to Facilitate Tumorigenesis and Progression of Glioma. J Mol Neurosci 2022; 72:1195-1207. [PMID: 35416616 DOI: 10.1007/s12031-022-02005-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 03/22/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Glioma is classified as one of the most common types of primary brain tumors. The high expression of CircRFX3 has been found in glioma. However, its functional roles in glioma and underlying mechanism remain unknown. PURPOSE Our study aimed to explore the function and specific mechanism of circRFX3 in glioma. METHODS RT-qPCR or western blot was applied to examine the expression of RNAs or proteins. Functional assays were carried out to evaluate the influence of circRFX3, RFX3 and PROX1 on glioma cells. In vivo experiments were done to ascertain the impact of circRFX3 on glioma growth. Moreover, mechanism assays were conducted to investigate the molecular relation among circRFX3, RFX3, HNRNPK and PROX1. RESULTS CircRFX3 was highly expressed in glioma cells. CircRFX3 knockdown led to the suppression of glioma cell and tumor growth. CircRFX3 overexpression resulted in the opposite outcomes. Mechanism analyses suggested that circRFX3 recruited HNRNPK to enhance RFX3 mRNA stability, thereby facilitating glioma cell malignant behaviors. RFX3 was also unveiled to affect glioma cells via stimulating PROX1 transcription. CONCLUSION CircRFX3, as a tumor promoter, could recruit HNRNPK to stabilize RFX3 mRNA in glioma cells. Additionally, RFX3 could promote PROX1 transcription to promote glioma progression.
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Affiliation(s)
- Yu Qian
- Department of Neurosurgery, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Baochun Cheng
- Department of Neurosurgery, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Jing Luo
- Department of Neurosurgery, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Yangchun Hu
- Department of Neurosurgery, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Lu Gao
- Department of Neurosurgery, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Hongwei Cheng
- Department of Neurosurgery, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.
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