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Li X, Zhou W, Chen J, Zhou L, Li Y, Wu X, Peng X. Circ_001653 alleviates sepsis associated-acute kidney injury by recruiting BUD13 to regulate KEAP1/NRF2/HO-1 signaling pathway. J Inflamm (Lond) 2024; 21:37. [PMID: 39289683 PMCID: PMC11406777 DOI: 10.1186/s12950-024-00409-7] [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: 03/24/2024] [Accepted: 09/04/2024] [Indexed: 09/19/2024] Open
Abstract
BACKGROUND The kidney is exceptionally vulnerable during sepsis, often resulting in sepsis-associated acute kidney injury (SA-AKI), a condition that not only escalates morbidity but also significantly raises sepsis-related mortality rates. Circular RNA circ_001653 has been previously reported to be upregulated in the serum of SA-AKI patients, while the role and underlying mechanism of circ_001653 in SA-AKI remains unknown. In this study, we aimed to explore the functional role and the molecular mechanism of circ_001653 in the pathogenesis of SA-AKI. METHODS LPS-stimulated HK-2 cells and ligation and perforation of cecum (CLP)-induced rats were used as in vitro and in vivo models of SA-AKI. The target gene expression levels were measured using qRT-PCR and western blot. Renal function (BUN, sCr, uNGAL, and uKIM-1), and renal pathological changes were detected in septic mice. TUNEL and EdU assays were conducted to measure apoptosis and proliferation rates in vitro. DCFH-DA staining was used to detect ROS levels in vitro and in vivo. Oxidative stress markers (SOD, GSH-Px, MDA, and SOD), and inflammation markers (IL-1β, IL-6, and TNF-α) were determined using commercial kits both in vitro and in vivo. Additionally, gain-and-loss-of-function assays and mechanistic experiments were conducted to explore the regulatory role of circ_001653 in SA-AKI pathogenesis. RESULTS Data showed that circ_001653 expression was high in LPS-stimulated HK-2 cells and CLP-induced rat renal tissue and was mainly localized in the cytoplasm. Notably, circ_001653 silencing alleviated SA-AKI by reducing apoptosis and alleviating oxidative stress and inflammation in HK-2 cells and renal tissue of rats. Mechanistically, it was found that circ_001653 alleviated SA-AKI by recruiting BUD13 to activate the KEAP1/Nrf2/HO-1 signaling pathway. CONCLUSIONS To summarize, our study is the first to reveal elevated expression of circ_001653 in sepsis-associated AKI, and its downregulation effectively attenuates AKI by reducing apoptosis, inflammation, and oxidative stress. Mechanistically, circ_001653 exerts its effects by recruiting BUD13 to activate the KEAP1/Nrf2/HO-1 signaling pathway. These findings suggest circ_001653 as a potential therapeutic target for the drug development of sepsis-associated AKI.
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Affiliation(s)
- Xinxin Li
- Department of Emergency Intensive Care Medicine & Emergency Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China
| | - Wei Zhou
- Department of Emergency Intensive Care Medicine & Emergency Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China
| | - Jianjun Chen
- Department of Emergency Intensive Care Medicine & Emergency Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China
| | - Liangliang Zhou
- Department of Emergency Intensive Care Medicine & Emergency Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China
| | - Yingbing Li
- Department of Emergency Intensive Care Medicine & Emergency Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China
| | - Xufeng Wu
- Department of Emergency Intensive Care Medicine & Emergency Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China
| | - Xia Peng
- Department of Respiratory and Critical Care Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School/The First People's Hospital of Yancheng, No. 166, Yulong West Road, Tinghu District, Yancheng, 224000, Jiangsu, China.
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Zhao T, Sun J, Lu X, Liu L, Chen L, Zhao W, Zhou B. Let-7a-5p abrogates progression of papillary thyroid carcinoma cells by decreasing nuclear receptor subfamily 6 group a member 1-mediated lipogenesis. J Biochem Mol Toxicol 2024; 38:e23572. [PMID: 37905833 DOI: 10.1002/jbt.23572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 08/20/2023] [Accepted: 10/18/2023] [Indexed: 11/02/2023]
Abstract
Increasing evidence shows that microRNAs (miRNAs) contribute vital roles in papillary thyroid carcinoma (PTC) carcinogenesis, proliferation, invasion, and so on. As the most common endocrine malignancy, there still have largely unknown molecular events. First, our analysis and open access database information indicates that the downregulation of let-7a-5p accelerates PTC progression. Next, lentivirus mediates the overexpression of let-7a-5p PTC cells, and found let-7a-5p suppressed cancer cells proliferation and invasion. Interestingly, bioinformatics analysis hints NR6A1 is the potential target gene of let-7a-5p. The regulation was validated by luciferase and quantitative reverse transcription polymerase chain reaction (qRT-PCR) in PTC tissue and the clinic tumors. Moreover, let-7a-5p regulated NR6A1 involved in PTC cells lipogensis in vitro and in vivo. Finally, let-7a-5p abrogates PCT xenograft tumors growth, NR6A1 expression and lipogenesis. Taken together, our data indicates that let-7a-5p suppresses PCT progression through decreased lipogenesis, the related let-7a-5p/NR6A1axis might be promising candidate targets for PTC treatment.
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Affiliation(s)
- Tao Zhao
- Department of Oncology, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, China
| | - Jinghui Sun
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Xiangdong Lu
- Department of Oncology, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, China
| | - Lingling Liu
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Lin Chen
- Department of Outpatient, North Sichuan Medical College, Nanchong, China
| | - Wei Zhao
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Bin Zhou
- Department of Thyroid and Breast Surgery, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, China
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MicroRNA-377: A therapeutic and diagnostic tumor marker. Int J Biol Macromol 2023; 226:1226-1235. [PMID: 36442575 DOI: 10.1016/j.ijbiomac.2022.11.236] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/15/2022] [Accepted: 11/18/2022] [Indexed: 11/26/2022]
Abstract
Cancer is considered as one of the main causes of human deaths globally. Despite the recent progresses in therapeutic modalities, there is still a high rate of mortality among cancer patients. Late diagnosis in advanced tumor stages is one of the main reasons for treatment failure in cancer patients. Therefore, it is required to suggest the novel strategies for the early tumor detection. MicroRNAs (miRNAs) have critical roles in neoplastic transformation by regulation of cell proliferation, migration, and apoptosis. They are always considered as non-invasive markers due to their high stability in body fluids. Since, all of the miRNAs have tissue-specific functions in different tumors as tumor suppressor or oncogene; it is required to investigate the molecular mechanisms of every miRNA in different tumors to introduce that as a suitable non-invasive diagnostic marker in cancer patients. For the first time in the present review, we discussed the role of miR-377 during tumor progression. It has been reported that miR-377 mainly functions as a tumor suppressor through the regulation of signaling pathways and transcription factors. This review is an important step toward introducing the miR-377 as a novel diagnostic marker as well as a therapeutic target in cancer patients.
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Lin ZH, Zhang J, Zhuang LK, Xin YN, Xuan SY. Establishment of a Prognostic Model for Hepatocellular Carcinoma Based on Bioinformatics and the Role of NR6A1 in the Progression of HCC. J Clin Transl Hepatol 2022; 10:901-912. [PMID: 36304495 PMCID: PMC9547269 DOI: 10.14218/jcth.2022.00191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/15/2022] [Accepted: 06/27/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND AND AIMS Generally acceptable prognostic models for hepatocellular carcinoma (HCC) are not available. This study aimed to establish a prognostic model for HCC by identifying immune-related differentially expressed genes (IR-DEGs) and to investigate the potential role of NR6A1 in the progression of HCC. METHODS Bioinformatics analysis using The Cancer Genome Atlas and ImmPort databases was used to identify IR-DEGs. Lasso Cox regression and multivariate Cox regression analysis were used to establish a prognostic model of HCC. Kaplan-Meier analysis and the receiver operating characteristic (ROC) curves were used to evaluate the performance of the prognostic model, which was further verified in the International Cancer Genome Consortium (ICGC) database. Gene set enrichment analysis was used to explore the potential pathways of NR6A1. Cell counting kit 8, colony formation, wound healing, and Transwell migration assays using Huh7 cells, and tumor formation models in nude mice were conducted. RESULTS A prognostic model established based on ten identified IR-DEGs including HSPA4, FABP6, MAPT, NDRG1, APLN, IL17D, LHB, SPP1, GLP1R, and NR6A1, effectively predicted the prognosis of HCC patients, was confirmed by the ROC curves and verified in ICGC database. NR6A1 expression was significantly up-regulated in HCC patients, and NR6A1 was significantly associated with a low survival rate. Gene set enrichment analysis showed the enrichment of cell cycle, mTOR, WNT, and ERBB signaling pathways in patients with high NR6A1 expression. NR6A1 promoted cell proliferation, invasiveness, migration, and malignant tumor formation and growth in vitro and in vivo. CONCLUSIONS An effective prognostic model for HCC, based on a novel signature of 10 immune-related genes, was established. NR6A1 was up-regulated in HCC and was associated with a poor prognosis of HCC. NR6A1 promoted cell proliferation, migration, and growth of HCC, most likely through the cell cycle, mTOR, WNT, and ERBB signaling pathways.
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Affiliation(s)
- Zhong-Hua Lin
- College of Medicine and Pharmaceutics, Ocean University of China, Qingdao, Shandong, China
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong, China
| | - Jie Zhang
- Medical College, Qingdao University, Qingdao, Shandong, China
| | - Li-Kun Zhuang
- Clinical Research Center, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong, China
| | - Yong-Ning Xin
- College of Medicine and Pharmaceutics, Ocean University of China, Qingdao, Shandong, China
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong, China
- Correspondence to: Yong-Ning Xin, College of Medicine and Pharmaceutics, Ocean University of China, Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, Shandong, China. ORCID: https://orcid.org/0000-0002-3692-7655. Tel: +86-532-82789463, Fax: +86-532-85968434, E-mail: ; Shi-Ying Xuan, College of Medicine and Pharmaceutics, Ocean University of China, Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, Shandong, China. Tel: +86-532-82789463, Fax: +86-532-85968434, E-mail:
| | - Shi-Ying Xuan
- College of Medicine and Pharmaceutics, Ocean University of China, Qingdao, Shandong, China
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong, China
- Correspondence to: Yong-Ning Xin, College of Medicine and Pharmaceutics, Ocean University of China, Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, Shandong, China. ORCID: https://orcid.org/0000-0002-3692-7655. Tel: +86-532-82789463, Fax: +86-532-85968434, E-mail: ; Shi-Ying Xuan, College of Medicine and Pharmaceutics, Ocean University of China, Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, Shandong, China. Tel: +86-532-82789463, Fax: +86-532-85968434, E-mail:
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Fang H, Li Y, Sang Y. Circ_0044516 inhibits cell proliferation and migration and induces apoptosis in gastric cancer cells by targeting miR-516a-5p. Shijie Huaren Xiaohua Zazhi 2022; 30:393-401. [DOI: 10.11569/wcjd.v30.i9.393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Circ_0044516 is highly expressed in gastric cancer, and inhibition of circ_0044516 can promote gastric cancer cell proliferation and induce apoptosis. Bioinformatics analysis predicts that miR-516a-5p binds to circ_0044516. The expression of miR-516a-5p is low in non-small cell lung cancer, but its role is unclear in gastric cancer cells. This study mainly explored the effect of circ_0044516 targeting miR-516a-5p on the proliferation, migration, and apoptosis of gastric cancer cells.
AIM To explore whether circ_0044516 targets and regulates miR-516a-5p and its effects on the proliferation, migration, and apoptosis of gastric cancer cells.
METHODS Quantitative real time polymerase chain reaction (qRT-PCR) was first used to detect the expression levels of circ_0044516 and miR-516a-5p in gastric epithelial cells GES-1 and gastric cancer cells (SNU-16 and HGC-27). HGC-27 cells were then divided into si-NC group (transfected with si-NC), si-circ_0044516 group (transfected with si-circ_0044516), miR-NC group (transfected with miR-NC), miR-516a-5p group (transfected with miR-516a-5p), si-circ_0044516 + anti-miR-NC group (co-transfected with si-circ_0044516 and anti-miR-NC), and si-circ_0044516 + anti-miR-516a-5p group (co-transfected with si-circ_0044516 and anti-miR-516a-5p). qRT-PCR was used to detect the expression levels of circ_0044516 and miR-516a-5p, MTT assay was used to detect cell proliferation, flow cytometry was performed to detect cell apoptosis, Transwell assay was used to detect cell migration, Western blot analysis was performed to detect the protein expression of p21, Bcl-2 associated X protein (Bax), B cell lymphoma/lewkmia-2 (Bcl-2), and matrix metalloproteinase 2 (MMP2), and dual luciferase reporter assay was ued to detect the targeting relationship between circ_0044516 and miR-516a-5p.
RESULTS Compared with gastric epithelial cells GES-1, the expression level of circ_0044516 was increased in gastric cancer cells SNU-16 and HGC-27, and the expression level of miR-516a-5p was decreased. Silencing circ_0044516 or overexpression of miR-516a-5p decreased the survival rate of gastric cancer cells and the number of migrating cells, increased the rate of cell apoptosis and the expression of p21 and Bax proteins, and reduced the expression of Bcl-2 and MMP2 proteins. Circ_0044516 targets and negatively regulates the expression of miR-516a-5p, and inhibition of miR-516a-5p partially restored the effect of silencing circ_0044516 on the proliferation, migration, and apoptosis of gastric cancer cells.
CONCLUSION Circ_0044516 inhibits cell proliferation and migration and induces apoptosis in gastric cancer cells through targeted negative regulation of miR-516a-5p.
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Affiliation(s)
- Hui Fang
- Department of Special Inspection, Hangzhou Hospital of Traditional Chinese Medicine, Zhejiang University of Traditional Chinese Medicine, Hangzhou 310000, Zhejiang Province, China
| | - Ying Li
- Department of Special Inspection, Hangzhou Hospital of Traditional Chinese Medicine, Zhejiang University of Traditional Chinese Medicine, Hangzhou 310000, Zhejiang Province, China
| | - Yi Sang
- Department of Gastroenterology, Hangzhou Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou 311700, Zhejiang Province, China
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Chu C, Liu X, Zhao Z, Shi Z. Circ_0008035 promotes the progression of gastric cancer via the regulation of miR-1256/CEACAM6 axis. Cell Cycle 2022; 21:1091-1102. [PMID: 35220873 PMCID: PMC9037572 DOI: 10.1080/15384101.2022.2041354] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) is one of the most common malignant tumors. Circular RNA (circRNA) has been shown to be involved in the progression of GC. However, the function of circ_0008035 in GC has not been studied. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of circ_0008035, microRNA-1256 (miR-1256) and carcinoembryonic antigen-related cell adhesion molecule 6 (CEACAM6). 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay, 5-ethynyl-2'-deoxyuridine (EdU) assay, flow cytometry, and transwell assay were used to detect cell function. Western blot examined the protein levels of Ki67, Bax, MMP-2, and CEACAM6. The relationship between miR-1256 and circ_0008035 or CEACAM6 was verified by dual-luciferase reporter assays and RNA pull down. The xenotransplantation model was established in BALB/c nude mice to study the role of circ_0008035 in vivo. Circ_0008035 and CEACAM6 were significantly high-expressed in GC tissues and cells. Silencing of circ_0008035 reduced GC cell proliferation, migration, and invasion while enhancing apoptosis. MiR-1256 was a target of circ_0008035. The inhibition effect of circ_0008035 knockdown on the malignant behavior of GC cells could be reversed by miR-1256 inhibitor. In addition, CEACAM6 was a target of miR-1256. Overexpression of CEACAM6 partially restored the inhibitory effect of miR-1256 on cell progression. Animal experiments confirmed the anti-tumor effect of circ_0008035 knockdown in vivo. Collectively, circ_0008035 regulated the expression of CEACAM6 by sponging miR-1256, thereby promoting the development of GC. Our data provided a novel targeted therapy for GC.
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Affiliation(s)
- Chaoyang Chu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China
| | - Xianli Liu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China,CONTACT Xianli Liu Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, 636 Guanlin Road, Luolong District, Luoyang, 471003, Henan Province, China
| | - Zhiguo Zhao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China
| | - Zhijie Shi
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China
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Tan P, Xue T, Wang Y, Hu Z, Su J, Yang R, Ji J, Ye M, Chen Z, Huang C, Lu X. Hippocampal NR6A1 impairs CREB-BDNF signaling and leads to the development of depression-like behaviors in mice. Neuropharmacology 2022; 209:108990. [PMID: 35183538 DOI: 10.1016/j.neuropharm.2022.108990] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 12/20/2022]
Abstract
Chronic stress exposure is a risk factor that can induce the development of depression-like behaviors by impairing the hippocampal cyclic adenosine monophosphate-response element binding protein (CREB)-brain-derived neurotrophic factor (BDNF) signaling, but its underlying mechanisms remain largely unknown. We identified an orphan receptor that can suppress the activity of CREB, nuclear receptor sub-family 6, group A, member 1 (NR6A1), in mouse brain neurons. Given the critical role of the impaired CREB-BDNF signaling in depression, we speculate that the neuronal NR6A1 may mediate the pathogenesis of depression. Results showed that chronic unpredictable stress (CUS) markedly increased the expression levels of hippocampal NR6A1 protein, which reduced hippocampal CREB phosphorylation and BDNF protein expression. Overexpression of hippocampal NR6A1 in stress-naïve mice simulated chronic stress, inducing depression-like behaviors in the tail suspension test, forced swimming test, and sucrose preference test, and impairing the hippocampal CREB-BDNF signaling cascade. Genetic knockdown of hippocampal NR6A1 did not affect mouse behaviors but prevented the CUS-induced depression-like behaviors in mice and impairment in hippocampal CREB-BDNF signaling. Furthermore, genetic knockdown of hippocampal CREB or BDNF abrogated the preventive effect of hippocampal NR6A1 down-regulation on CUS-induced depression-like behaviors in mice. Collectively, these results for the first time identified a nuclear expression of NR6A1 in mouse brain neurons, and showed that the abnormally increased NR6A1 protein in the hippocampus in mice treated with or without chronic stress can impair the CREB-BDNF signaling cascade and lead to the development of depression-like behaviors. Hippocampal NR6A1 could be a novel target for the development of antidepressants.
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Affiliation(s)
- Pingping Tan
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Ting Xue
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Yue Wang
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Zhichao Hu
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Jianbin Su
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University, First People's Hospital of Nantong City, #6 North Road Hai'er Xiang, Nantong, 226001, Jiangsu, China
| | - Rongrong Yang
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Jiangsu Province, #20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Jianlin Ji
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Minxiu Ye
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Zhuo Chen
- Invasive Technology Department, Affiliated Hospital 2 of Nantong University, First People's Hospital of Nantong City, #6 North Road Hai'er Xiang, Nantong, 226001, Jiangsu, China
| | - Chao Huang
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China.
| | - Xu Lu
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong, 226001, Jiangsu, China.
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Wu G, Zhang A, Yang Y, Wu D. Circ-RNF111 aggravates the malignancy of gastric cancer through miR-876-3p-dependent regulation of KLF12. World J Surg Oncol 2021; 19:259. [PMID: 34461926 PMCID: PMC8404246 DOI: 10.1186/s12957-021-02373-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/10/2021] [Indexed: 12/18/2022] Open
Abstract
Background The aberrant expression of circular RNAs (circRNAs) plays vital roles in the advancement of human cancers, including gastric cancer (GC). In this study, the functions of circRNA ring finger protein 111 (circ-RNF111) in GC were investigated. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) assay was performed for the levels of circ-RNF111, microRNA-876-3p (miR-876-3p) and krueppel-like factor 12 (KLF12) mRNA. RNase R assay was conducted for the feature of circ-RNF111. Cell Counting Kit-8 (CCK-8) assay, colony formation assay, wound-healing assay, and transwell assay were applied for cell viability, colony formation, migration, and invasion, respectively. Flow cytometry analysis was used to analyze cell apoptosis and cell cycle process. The glycolysis level was examined using specific commercial kits. Western blot assay was carried out to measure the protein levels of hexokinase 2 (HK-2) and KLF12. Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were employed to verify the combination between miR-876-3p and circ-RNF111 or KLF12. Murine xenograft model was constructed for the role of circ-RNF111 in vivo. Immunohistochemistry (IHC) was used for KLF12 level. Results Circ-RNF111 was higher expressed in GC tissues and cells than normal tissues and cells. Silencing of circ-RNF111 restrained cell viability, colony formation, migration, invasion, cell cycle process and glycolysis and induced apoptosis in GC cells in vitro. Circ-RNF111 positively regulated KLF12 expression via absorbing miR-876-3p. MiR-876-3p downregulation reversed the impacts of circ-RNF111 silencing on GC cell malignant phenotypes. MiR-876-3p overexpression repressed GC cell growth, metastasis and glycolysis, inhibited apoptosis and arrested cell cycle, while KLF12 elevation weakened the effects. Besides, circ-RNF111 knockdown inhibited tumor growth in vivo. Conclusion Circ-RNF111 knockdown relieved the development of GC by regulating miR-876-3p/KLF12 axis. Supplementary Information The online version contains supplementary material available at 10.1186/s12957-021-02373-5.
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Affiliation(s)
- Guoxian Wu
- Department of General Surgery, the First People's Hospital of Xiaoshan, No. 199 Shixin South Road, Chengxiang Street, Xiaoshan District, Hangzhou, Zhejiang, China.
| | - Aimin Zhang
- Department of General Surgery, the First People's Hospital of Xiaoshan, No. 199 Shixin South Road, Chengxiang Street, Xiaoshan District, Hangzhou, Zhejiang, China
| | - Yinglin Yang
- Department of General Surgery, the First People's Hospital of Xiaoshan, No. 199 Shixin South Road, Chengxiang Street, Xiaoshan District, Hangzhou, Zhejiang, China
| | - Dongping Wu
- Department of General Surgery, the First People's Hospital of Xiaoshan, No. 199 Shixin South Road, Chengxiang Street, Xiaoshan District, Hangzhou, Zhejiang, China
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Xu Y, Sun L, Hu J, Xu S. Knockdown of hsa_circ_0001275 reverses dexamethasone-induced osteoblast growth inhibition via mediation of miR-377/CDKN1B axis. PLoS One 2021; 16:e0252126. [PMID: 34043680 PMCID: PMC8158950 DOI: 10.1371/journal.pone.0252126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 05/10/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Osteoporosis affects the quality of life among middle-aged and elderly individuals. In addition, dysfunction of osteoblasts can lead to the progression of osteoporosis. Circular (circ)RNAs are involved in various types of diseases, including osteoporosis. Moreover, it has been reported that hsa_circ_0001275 expression is upregulated in osteoporosis. However, the effects of hsa_circ_0001275 on the growth of osteoblasts remain unclear. METHODS In the present study, the gene and protein expression levels in hFOB1.19 cells were detected via reverse transcription-quantitative (RT-qPCR) and western blot analyses, respectively. In addition, alkaline phosphatase (ALP) activity and calcium nodules were examined by ALP and alizarin red staining, respectively. Cell proliferation was measured using the Cell Counting Kit-8 assay. Cell apoptosis and cell cycle were analyzed by flow cytometry. Furthermore, dual luciferase reporter and RNA pull-down assay were used to confirm the association among hsa_circ_0001275, microRNA (miR)-377 and CDKN1B. RESULTS DEX-induced hFOB1.19 cell growth inhibition was significantly reversed by silencing hsa_circ_0001275. Moreover, DEX significantly increased ALP activity and calcium nodules in hFOB1.19 cells, while this effect was significantly reversed in the presence of hsa_circ_0001275 small interfering RNA. In addition, miR-377 was sponged by hsa_circ_0001275 and CDKN1B was directly targeted by miR-377 in hFOB1.19 cells. Furthermore, the therapeutic effect of hsa_circ_0001275 knockdown on osteoporosis was notably reversed by miR-377 antagomir. CONCLUSION The data demonstrated that knockdown of hsa_circ_0001275 reversed DEX-induced osteoblast growth inhibition via activation of the miR-377/CDKN1B axis. Therefore, this study might shed new lights on the treatment of osteoporosis.
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Affiliation(s)
- Yan Xu
- Department of Endocrinology, The First People’s Hospital of Fuyang District, Hangzhou, Zhejiang, China
- * E-mail:
| | - Liqin Sun
- Department of Endocrinology, The First People’s Hospital of Fuyang District, Hangzhou, Zhejiang, China
| | - Juncheng Hu
- Department of Endocrinology, The First People’s Hospital of Fuyang District, Hangzhou, Zhejiang, China
| | - Sai Xu
- Department of Endocrinology, The First People’s Hospital of Fuyang District, Hangzhou, Zhejiang, China
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