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Shah JA, Miao Y, Chu J, Chen W, Zhao Q, Cai C, Khattak S, Wang F, Jin J. Feedback Modulation between Human INO80 Chromatin Remodeling Complex and miR-372 in HCT116 Cells. Int J Mol Sci 2023; 24:10685. [PMID: 37445863 DOI: 10.3390/ijms241310685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/15/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
Human INO80 chromatin remodeling complex (INO80 complex) as a transcription cofactor is widely involved in gene transcription regulation and is frequently highly expressed in tumor cells. However, few reports exist on the mutual regulatory mechanism between INO80 complex and non-coding microRNAs. Herein, we showed evidence that the INO80 complex transcriptionally controls microRNA-372 (miR-372) expression through RNA-Seq analysis and a series of biological experiments. Knocking down multiple subunits in the INO80 complex, including the INO80 catalytic subunit, YY1, Ies2, and Arp8, can significantly increase the expression level of miR-372. Interestingly, mimicking miR-372 expression in HCT116 cells, in turn, post-transcriptionally suppressed INO80 and Arp8 expression at both mRNA and protein levels, indicating the existence of a mutual regulatory mechanism between the INO80 complex and miR-372. The target relationship between miR-372 and INO80 complex was verified using luciferase assays in HCT116 colon cancer cells. As expected, miR-372 mimics significantly suppressed the luciferase activity of pMIR-luc/INO80 and pMIR-luc/Arp8 3'-UTR in cells. In contrast, the miR-372 target sites in the 3'-UTRs linked to the luciferase reporter were mutagenized, and both mutant sites lost their response to miR-372. Furthermore, the mutual modulation between the INO80 complex and miR-372 was involved in cell proliferation and the p53/p21 signaling pathway, suggesting the synergistic anti-tumor role of the INO80 complex and miR372. Our results will provide a solid theoretical basis for exploring miR-372 as a biological marker of tumorigenesis.
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Affiliation(s)
- Junaid Ali Shah
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Yujuan Miao
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Jinmeng Chu
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Wenqi Chen
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Qingzhi Zhao
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Chengyu Cai
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Saadullah Khattak
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng 475004, China
| | - Fei Wang
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Jingji Jin
- School of Life Sciences, Jilin University, Changchun 130012, China
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Yin G, Yan C, Hao J, Zhang C, Wang P, Zhao C, Cai S, Meng B, Zhang A, Li L. PRDM16, negatively regulated by miR-372-3p, suppresses cell proliferation and invasion in prostate cancer. Andrologia 2022:e14529. [PMID: 35858224 DOI: 10.1111/and.14529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/03/2022] [Revised: 05/27/2022] [Accepted: 06/26/2022] [Indexed: 11/26/2022] Open
Abstract
Prostate cancer (PCa) is one of the most prevalent malignant tumours. The alternation of microRNAs (miRNAs) expression is associated with prostate cancer progression, whereas its way to influence progression of prostate cancer remains elusive. The expression levels of PRDM16 mRNA and miR-372-3p in PCa cell lines were analysed using qRT-PCR. The protein expression of PRDM16 in PCa cell lines was also analysed using Western blot. CCK-8, wound healing and Transwell assays were applied to examine cell proliferation, migration, and invasion in prostate cancer cells, respectively. Dual-luciferase reporter assay was utilised to validate the interaction between miR-372-3p and PRDM16. In the present study, markedly decreased PRDM16 mRNA and protein expression levels were observed in prostate cancer cells. PRDM16 overexpression hampered cellular proliferation, migration, and invasion, while silencing PRDM16 had the opposite effect. Moreover, miR-372-3p could target the regulation expression of PRDM16. Rescue experiments demonstrated that upregulating miR-372-3p conspicuously restored the inhibitory effect of increased PRDM16 on cell proliferation, migration, and invasion in PCa. Overall, our study clarifies the biological role of miR-372-3p/PRDM16 axis in prostate cancer progression, which may be effective biomarkers for clinical treatment of prostate cancer.
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Affiliation(s)
- Guangwei Yin
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Chengquan Yan
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Jing Hao
- Office of Academic Affairs, North China University of Science and Technology, Tangshan, Hebei Province, China
| | - Chunying Zhang
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Pengfei Wang
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Chaofei Zhao
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Shengyong Cai
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Bin Meng
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Aili Zhang
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
| | - Lin Li
- The Third Department of Urology, Tangshan Gongren Hospital, Tangshan, Hebei Province, China
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Yang B, Zang L, Cui J, Wei L. Circular RNA TTC3 regulates cerebral ischemia-reperfusion injury and neural stem cells by miR-372-3p/TLR4 axis in cerebral infarction. Stem Cell Res Ther 2021; 12:125. [PMID: 33579365 PMCID: PMC7881478 DOI: 10.1186/s13287-021-02187-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [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: 12/03/2020] [Accepted: 01/24/2021] [Indexed: 12/13/2022] Open
Abstract
Background Stroke serves as a prevalent cerebrovascular disorder with severe cerebral ischemia/reperfusion (CIR) injury, in which neural stem cells (NSCs) play critical roles in the recovery of cerebral function. Circular RNAs (circRNAs) have been widely found to participate in stroke and NSC modulation. However, the role of circRNA TTC3 (circTTC3) in the regulation of CIR injury and NSCs remains elusive. Here, we aimed to explore the impact of circTTC3 on CIR injury and NSCs. Methods The middle cerebral artery occlusion/repression (MCAO/R) model was established in C57BL/6J mice. The primary astrocytes were isolated from the cerebellum from C57BL/6J mice. The primary NSCs were obtained from rat embryos. The effect of circTTC3 on CIR injury and NSCs was analyzed by TTC staining, qPCR, Western blot, LDH colorimetric kits, MTT assays, Annexin V-FITC Apoptosis Detection Kit, luciferase reporter gene assays, and others in the system. Results Significantly, the expression of circTTC3 was elevated in the MCAO/R mice and oxygen and glucose deprivation (OGD)-treated astrocytes. The depletion of circTTC3 attenuated cerebral infarction, neurological score, and brain water content. The OGD treatment induced apoptosis and the levels of lactate dehydrogenase (LDH) in the astrocytes, in which circTTC3 depletion reduced this phenotype in the system. Moreover, the depletion of circTTC3 promoted the proliferation and upregulated the nestin and β-tubulin III expression in NSCs. Mechanically, circTTC3 was able to sponge miR-372-3p, and miR-372-3p can target Toll-like receptor 4 (TLR4) in NSCs. The miR-372-3p inhibitor or TLR4 overexpression could reverse circTTC3 depletion-mediated astrocyte OGD injury and NSC regulation. Conclusion Thus, we conclude that circTTC3 regulates CIR injury and NSCs by the miR-372-3p/TLR4 axis in cerebral infarction. Our finding presents new insight into the mechanism by which circTTC3 modulates CIR injury and NSC dysfunction. CircTTC3, miR-372-3p, and TLR4 may serve as potential targets for the treatment of CIR injury during stroke.
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Affiliation(s)
- Bo Yang
- Department of Neurology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Li'e Zang
- Department of Neurology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Jingwen Cui
- Department of Neurosurgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Linlin Wei
- Department of Gynaecology, The First Affiliated Hospital of Jinzhou Medical University, No.2, Section 5, Renmin Street, Jinzhou, Liaoning Province, China.
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Gao Y, Ma H, Gao Y, Tao K, Fu L, Ren R, Hu X, Kou M, Chen B, Shi J, Wen Y. CircRNA Circ_0001721 Promotes the Progression of Osteosarcoma Through miR-372-3p/MAPK7 Axis. Cancer Manag Res 2020; 12:8287-8302. [PMID: 32982424 PMCID: PMC7498501 DOI: 10.2147/cmar.s244527] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 01/02/2020] [Accepted: 08/06/2020] [Indexed: 12/12/2022] Open
Abstract
Background Osteosarcoma (OS) is the most common bone tumor. Many studies have reported that circular RNAs (circRNAs) play an important role in the development of a variety of human cancers. However, the underlying mechanism of circ_0001721 in regulating osteosarcoma progression remains unknown. Materials and Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the levels of circ_0001721, miR-372-3p, and mitogen-activated protein kinase 7 (MAPK7) in osteosarcoma tissues and cells. Besides, glycolysis was investigated by glucose consumption, lactate production and hexokinase II (HK2) protein level. Cell proliferation and apoptosis were determined by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and flow cytometry, separately. Cell migration and invasion were determined by transwell assay. Moreover, the protein levels of HK2 and epithelial-to-mesenchymal transition (EMT) markers were determined by Western blot analysis. The relationship between miR-372-3p and circ_0001721 or MAPK7 was predicated by starbase v3.0 and confirmed by dual-luciferase reporter assay or RNA binding protein immunoprecipitation (RIP) assay. Murine xenograft model was established to investigate the role of circ_0001721 in vivo. Results The levels of circ_0001721 and MAPK7 were upregulated in osteosarcoma tissues and cells, while miR-372-3p was downregulated. Knockdown of circ_0001721 inhibited glycolysis, cell proliferation, cell migration, invasion and epithelial-to-mesenchymal transition (EMT), and promoted apoptosis. Circ_0001721 was validated as a sponge of miR-372-3p and mediated glycolysis, cell proliferation, apoptosis, migration, invasion, and EMT of osteosarcoma cells through miR-372-3p. MAPK7 was a target of miR-372-3p and overexpression of MAPK7 attenuated anti-cancer role of miR-372-3p in OS cells. Further studies revealed that circ_0001721 regulates MAPK7 expression via sponging miR-372-3-p. Finally, knockdown of circ_0001721 inhibited tumor progression in vivo. Conclusion Circ_0001721 promoted osteosarcoma development through the miR-372-3p/MAPK7 axis.
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Affiliation(s)
- Yuanpeng Gao
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
| | - Haixia Ma
- Department of Pathology, Tumor Hospital of Shanxi, Taiyuan, People's Republic of China
| | - Yan Gao
- Department of VitreoretinalSurgery, Shanxi Eye Hospital, Taiyuan, People's Republic of China
| | - Kai Tao
- Department of Digestive Minimally Invasive Surgery, Tumor Hospital of Shanxi, Taiyuan, People's Republic of China
| | - Liyan Fu
- Comprehensive Examination Department, Children's Hospital of Shanxi Province, Taiyuan, People's Republic of China
| | - Ruimin Ren
- Department of Urology Surgery, Shanxi Bethune Hospital, Taiyuan, People's Republic of China
| | - Xingui Hu
- Department of Cardiology, Taiyuan Iron and Steel Group General Hospital, Taiyuan, People's Republic of China
| | - Min Kou
- Department of Nephrology, Children's Hospital of Shanxi Province, Taiyuan, People's Republic of China
| | - Bin Chen
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
| | - Junjun Shi
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
| | - Yunpeng Wen
- Department of Rehabilitation, Shanxi Huajin Orthopedic Hospital, Taiyuan, People's Republic of China
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Li Y, Liu JJ, Zhou JH, Chen R, Cen CQ. LncRNA HULC induces the progression of osteosarcoma by regulating the miR-372-3p/HMGB1 signalling axis. Mol Med 2020; 26:26. [PMID: 32188407 PMCID: PMC7081592 DOI: 10.1186/s10020-020-00155-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 10/30/2019] [Accepted: 03/05/2020] [Indexed: 01/02/2023] Open
Abstract
Background Osteosarcoma is a malignancy that normally affects children, adolescents, and young adults. Although accumulating evidence has demonstrated the importance of HULC in osteosarcoma, little is reported about its functional roles and molecular mechanisms. Methods The expression of HULC and miR-372-3p in osteosarcoma tissues was quantified by qRT-PCR. The regulatory roles of HULC and miR-372-3p on cell proliferation, apoptosis, migration and invasion were determined by CCK-8, colony formation, flow cytometry, wound healing, and transwell assays, respectively. The bioinformatics prediction software RAID v2.0 was used to predict the putative binding sites. The interactions among HULC, miR-372-3p and HMGB1 were explored by luciferase assay and western blot assay. Results Our results revealed elevated HULC and decreased miR-372-3p expression in both osteosarcoma tissues and cell lines. Overexpression of HULC or knockdown of miR-372-3p promoted osteosarcoma cell proliferation, migration and invasion and induced cell apoptosis. Bioinformatics and luciferase assays verified that HULC directly interacted with miR-372-3p to attenuate miR-372-3p binding to the HMGB1 3′-UTR. Furthermore, mechanistic investigations confirmed that activation of the miR-372-3p/HMGB1 regulatory loop by knockdown of miR-372-3p or overexpression of HMGB1 reversed the in vitro roles of HULC in promoting osteosarcoma cell proliferation, migration and invasion. Conclusion Our study is the first to demonstrate that HULC may act as a ceRNA to modulate HMGB1 expression by competitively sponging miR-372-3p, leading to the regulation of osteosarcoma progression, which provides new insight into osteosarcoma diagnosis and treatment.
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Affiliation(s)
- Yong Li
- Department of Emergency Medicine and Intensive Care Unit, The Third Xiangya Hospital of Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha, 410013, Hunan Province, People's Republic of China
| | - Jing-Jing Liu
- Department of Intensive Medicine, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan Province, People's Republic of China
| | - Jia-Hui Zhou
- Department of Orthopedics, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan Province, People's Republic of China
| | - Rui Chen
- Department of Orthopedics, The First Naval Hospital Southern Theater Command, Zhanjiang, 524000, Guangdong Province, People's Republic of China
| | - Chao-Qun Cen
- Department of Emergency Medicine and Intensive Care Unit, The Third Xiangya Hospital of Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha, 410013, Hunan Province, People's Republic of China.
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Jiang N, Li QL, Pan W, Li J, Zhang MF, Cao T, Su SG, Shen H. PRMT6 promotes endometrial cancer via AKT/mTOR signaling and indicates poor prognosis. Int J Biochem Cell Biol 2019; 120:105681. [PMID: 31884111 DOI: 10.1016/j.biocel.2019.105681] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 09/30/2019] [Revised: 12/04/2019] [Accepted: 12/19/2019] [Indexed: 12/24/2022]
Abstract
Arginine methylation plays essential roles in post-transcriptional modification and signal transduction. Dysregulation of protein arginine methyltransferases (PRMTs) has been reported in human cancers, yet the expression and biological function of PRMT6 in endometrial cancer (EMC) remains unclear. Here, we show that PRMT6 is upregulated in EMC and exhibits oncogenic activities via activation of AKT/mTOR pathway. The expression of PRMT6 in EMC is much higher than that in the adjacent nontumorous tissues. Elevated PRMT6 expression is significantly associated with higher histological tumor grade and unfavorable prognosis in two independent cohorts consisting of a total of 564 patients with EMC. In vitro data demonstrate that PRMT6 expression was identified as a downstream target of miR-372-3p. Ectopic expression of miR-372-3p downregulates PRMT6. Overexpression of PRMT6 promotes EMC cell proliferation and migration, whereas knockdown of PRMT6 leads to opposite phenotypes. Mechanistically, PRMT6 induces the phosphorylation of AKT and mTOR in EMC cells. Inhibition of AKT/mTOR signaling by MK2206 or rapamycin attenuates the PRMT6-mediated EMC progression. In clinical samples, high expression of PRMT6 was correlated to low expression of miR-372-3p and high expression of phosphorylated AKT. Collectively, our findings suggest PRMT6 may function as an oncogene to promote tumor progression, and be of prognostic value to predict disease-free survival of patients with EMC. The newly identified miR-372-3p/PRMT6/AKT/mTOR axis represents a new promising target for EMC management.
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Affiliation(s)
- Nan Jiang
- Department of Anesthesiology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Qiu-Li Li
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Wenwei Pan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Jinhui Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Mei-Fang Zhang
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Tiefeng Cao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Shu-Guang Su
- Department of Pathology, The Affiliated Hexian Memorial Hospital of Southern Medical University, Guangzhou, China.
| | - Huimin Shen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.
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Meng Z, Li F, Wang B. miR-372-3p is a potential diagnostic factor for diabetic nephropathy and modulates high glucose-induced glomerular endothelial cell dysfunction via targeting fibroblast growth factor-16. Arch Med Sci 2019; 19:703-716. [PMID: 37313198 PMCID: PMC10259400 DOI: 10.5114/aoms.2019.89659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 09/06/2019] [Indexed: 03/15/2024] Open
Abstract
INTRODUCTION Previous studies have reported that microRNAs are implicated in the pathogenesis of diabetic nephropathy (DN). In this study, the underlying molecular mechanisms and diagnostic significance of miR-372-3p were investigated in the process of DN. MATERIAL AND METHODS Cell proliferation and apoptosis were measured using MTT and Annexin V-FITC double staining, respectively. RT-qPCR and western blotting were used to measure the expression levels of mRNA and protein. The diagnostic power of miR-372-3p in plasma for DN was evaluated using the receiver operating characteristics (ROC) curves and the area under the ROC curves (AUC). RESULTS miR microarray analysis revealed that 126 miRs were significantly differentially expressed in response to high glucose stimulation. Among these miRs, high glucose stimulated miR-372-3p expression at the highest level. In vitro experimental measurements showed that knockdown of miR-372-3p showed the ability to reverse high glucose-induced glomerular endothelial cell apoptosis and impairment of eNOS/NO bioactivity. Mechanistic analysis revealed that fibroblast growth factor-16 (FGF-16) as a direct of miR-372-3p protected against high glucose-induced glomerular endothelial cell dysfunction. ROC analysis revealed that the diagnostic value of miR-372-3p, miR-15a or miR-372-3p combined with miR-15a in type 2 diabetes mellitus patients (AUC = 0.841, p < 0.001; AUC = 0.822, p < 0.001 or AUC = 0.922, p < 0.001) with DN was better than in type 1 diabetes mellitus patients (AUC = 0.805, p < 0.001; AUC = 0.722, p < 0.001 or AUC = 0.865, p < 0.001) with DN. CONCLUSIONS miR-372-3p might be a valuable therapeutic target and diagnostic marker for patients with DN.
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Affiliation(s)
- Zhiyun Meng
- Department of Nephrology, Weifang City Traditional Chinese Medical Hospital, Weifang, Shandong Province, China
| | - Fangyuan Li
- Department of Nephrology, Weifang City Traditional Chinese Medical Hospital, Weifang, Shandong Province, China
| | - Bin Wang
- Department of Nephrology, Weifang City Traditional Chinese Medical Hospital, Weifang, Shandong Province, China
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Fan J, Zhang J, Huang S, Li P. lncRNA OSER1-AS1 acts as a ceRNA to promote tumorigenesis in hepatocellular carcinoma by regulating miR-372-3p/Rab23 axis. Biochem Biophys Res Commun 2019; 521:196-203. [PMID: 31635804 DOI: 10.1016/j.bbrc.2019.10.105] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 09/17/2019] [Accepted: 10/12/2019] [Indexed: 12/17/2022]
Abstract
Long non-coding RNAs (lncRNAs) are crucial regulators of tumorigenesis and progression in human cancer, including hepatocellular carcinoma (HCC). However, the role of most lncRNAs that are dysregulated in HCC remains to be elucidated. Here, we investigated the role of OSER1-AS1 in the progression of HCC. The results of database and qRT-PCR analysis demonstrated that OSER1-AS1 was highly expressed in HCC tissues and the high expression of OSER1-AS1 was closely associated with larger tumor size, advanced tumor stages, lower disease free survival and overall survival of HCC patients. OSER1-AS1 knockdown significantly inhibited the proliferation, invasion and migration of HCC cells, and induced the apoptosis. In addition, the dual luciferase reporter assay directly demonstrated that OSER1-AS1 functioned as a molecular sponge for miR-372-3p to promote Rab23 expression. Moreover, the results of immunohistochemistry and western blot analysis showed that Rab23 was highly expressed in HCC tissues, and the high expression of Rab23 was closely associated with the poor overall survival of HCC patients. Immunofluorescence assay also found the subcellular localization of Rab23 in HCC cells. Rab23 was obviously downregulated in cells that were transfected with miR-372-3p mimics. MiR-372-3p mimics significantly inhibited the proliferation and invasion of HCC cells). Rab23 restoration partially reversed miR-372-3p-induced tumor suppressive effects on HCC cells. In conclusion, we found that OSER1-AS1 acted as a ceRNA to sponge miR-372-3p, thereby positively regulating the Rab23 expression and ultimately acting as a tumor suppressor gene in HCC progression.
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Affiliation(s)
- Jiye Fan
- Department of Pharmacy, Hebei Chemical and Pharmaceutical College, Shijiazhuang, 050026, Hebei, PR China
| | - Jing Zhang
- Department of Pharmacy, Hebei Chemical and Pharmaceutical College, Shijiazhuang, 050026, Hebei, PR China
| | - Shuhong Huang
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, No.18877 Jingshi Road, Jinan, 250062, Shandong, PR China
| | - Peng Li
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, No.18877 Jingshi Road, Jinan, 250062, Shandong, PR China.
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