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Botwe G, Fang X, Mukhtar YM, Zhou Y, Tang H, Wang M, Zhang J, Fu M, Jiang P, Gu J, Zhang X. Circular RNAs as biomarkers and therapeutic targets for gastrointestinal cancers. J Gastroenterol Hepatol 2024; 39:1230-1246. [PMID: 38504413 DOI: 10.1111/jgh.16536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/03/2024] [Accepted: 02/24/2024] [Indexed: 03/21/2024]
Abstract
Circular RNAs are a class of noncoding RNAs with covalently linked 5' and 3' ends that arise from backsplicing events. The absence of a 5' cap and a 3' poly(A) tail makes circular RNAs relatively more stable than their linear counterparts. They are evolutionary conserved and tissue-specific, and some show disease-specific expression patterns. Although their biological functions remain largely unknown, circular RNAs have been shown to play regulatory roles by acting as microRNA sponges, regulators of RNA-binding proteins, alternative splicing, and parental gene expression, and they could even encode proteins. Over the past few decades, circular RNAs have attracted wide attention in oncology owing to their implications in various tumors. Many circular RNAs have been characterized as key players in gastrointestinal cancers and influence cancer growth, progression, metastasis, and therapeutic resistance. Accumulating evidence reveals that their unique characteristics, coupled with their critical roles in tumorigenesis, make circular RNAs promising non-invasive clinical biomarkers for gastrointestinal cancers. In the present review, we summarized the biological roles of the emerging circular RNAs and their potential as biomarkers and therapeutic targets, which may help better understand their clinical significance in the management of gastrointestinal cancers.
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Affiliation(s)
- Godwin Botwe
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xinjian Fang
- Department of Oncology, Gaochun Hospital Affiliated to Jiangsu University, Nanjing, Jiangsu, China
| | - Yusif Mohammed Mukhtar
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yue Zhou
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Haozhou Tang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Maoye Wang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jiahui Zhang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Min Fu
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Pengcheng Jiang
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jianmei Gu
- Department of Clinical Laboratory Medicine, Nantong Tumor Hospital/Affiliated Tumor Hospital of Nantong University, Nantong, Jiangsu, China
| | - Xu Zhang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
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2
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Wei QY, Jin F, Wang ZY, Li BJ, Cao WB, Sun ZY, Mo SJ. MicroRNAs: A novel signature in the metastasis of esophageal squamous cell carcinoma. World J Gastroenterol 2024; 30:1497-1523. [PMID: 38617454 PMCID: PMC11008420 DOI: 10.3748/wjg.v30.i11.1497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/12/2024] [Accepted: 03/01/2024] [Indexed: 03/21/2024] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a malignant epithelial tumor, characterized by squamous cell differentiation, it is the sixth leading cause of cancer-related deaths globally. The increased mortality rate of ESCC patients is predominantly due to the advanced stage of the disease when discovered, coupled with higher risk of metastasis, which is an exceedingly malignant characteristic of cancer, frequently leading to a high mortality rate. Unfortunately, there is currently no specific and effective marker to predict and treat metastasis in ESCC. MicroRNAs (miRNAs) are a class of small non-coding RNA molecules, approximately 22 nucleotides in length. miRNAs are vital in modulating gene expression and serve pivotal regulatory roles in the occurrence, progression, and prognosis of cancer. Here, we have examined the literature to highlight the intimate correlations between miRNAs and ESCC metastasis, and show that ESCC metastasis is predominantly regulated or regulated by genetic and epigenetic factors. This review proposes a potential role for miRNAs as diagnostic and therapeutic biomarkers for metastasis in ESCC metastasis, with the ultimate aim of reducing the mortality rate among patients with ESCC.
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Affiliation(s)
- Qi-Ying Wei
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Feng Jin
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Zhong-Yu Wang
- Department of Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
| | - Bing-Jie Li
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Wen-Bo Cao
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Zhi-Yan Sun
- Division of Special Service, Department of Basic Oncology, School of Basic Medicine, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Sai-Jun Mo
- Department of Basic Science of Oncology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
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Cao SQ, Xue ST, Li WJ, Hu GS, Wu ZG, Zheng JC, Zhang SL, Lin X, Chen C, Liu W, Zheng B. CircHIPK3 regulates fatty acid metabolism through miR-637/FASN axis to promote esophageal squamous cell carcinoma. Cell Death Discov 2024; 10:110. [PMID: 38431720 PMCID: PMC10908791 DOI: 10.1038/s41420-024-01881-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/05/2024] Open
Abstract
The oncogenic role of circRNA in cancers including esophageal cancer (EC) has been well studied. However, whether and how circRNAs are involved in cancer cell metabolic processes remains largely unknown. Here, we reported that circRNA, circHIPK3, is highly expressed in ESCC cell lines and tissues. Knockdown of circHIPK3 significantly restrained cell proliferation, colony formation, migration, and invasion in vitro and inhibited tumor growth in vivo. Mechanistically, circHIPK3 was found to act as a ceRNA by sponging miR-637 to regulate FASN expression and fatty acid metabolism in ESCC cells. Anti-sense oligonucleotide (ASO) targeting circHIPK3 substantially inhibited ESCC both in vitro and in vivo. Therefore, these results uncover a modulatory axis constituting of circHIPK3/miR-637/FASN may be a potential biomarker and therapeutic target for ESCC in the clinic.
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Affiliation(s)
- Shi-Qiang Cao
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Song-Tao Xue
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Wen-Juan Li
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Guo-Sheng Hu
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China
- Xiang An Biomedicine Laboratory, School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China
| | - Zhi-Gang Wu
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Jian-Cong Zheng
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Shu-Liang Zhang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Xiao Lin
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Chun Chen
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China.
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China.
| | - Wen Liu
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China.
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China.
- Xiang An Biomedicine Laboratory, School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China.
| | - Bin Zheng
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China.
- Fujian Key Laboratory of Cardio-Thoracic Surgery, Fujian Medical University, No. 29 Xinquan Road, Fuzhou, Fujian, 350001, China.
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Abdullah ST, Abdullah SR, Hussen BM, Younis YM, Rasul MF, Taheri M. Role of circular RNAs and gut microbiome in gastrointestinal cancers and therapeutic targets. Noncoding RNA Res 2024; 9:236-252. [PMID: 38192436 PMCID: PMC10771991 DOI: 10.1016/j.ncrna.2023.12.002] [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: 09/29/2023] [Revised: 11/10/2023] [Accepted: 12/11/2023] [Indexed: 01/10/2024] Open
Abstract
Gastrointestinal cancers are a huge worldwide health concern, which includes a wide variety of digestive tract cancers. Circular RNAs (circRNAs), a kind of non-coding RNA (ncRNAs), are a family of single-stranded, covalently closed RNAs that have become recognized as crucial gene expression regulators, having an impact on several cellular functions in cancer biology. The gut microbiome, which consists of several different bacteria, actively contributes to the regulation of host immunity, inflammation, and metabolism. CircRNAs and the gut microbiome interact significantly to greatly affect the growth of GI cancer. Several studies focus on the complex functions of circRNAs and the gut microbiota in GI cancers, including esophageal cancer, colorectal cancer, gastric cancer, hepatocellular cancer, and pancreatic cancer. It also emphasizes how changed circRNA expression profiles and gut microbiota affect pathways connected to malignancy as well as how circRNAs affect hallmarks of gastrointestinal cancers. Furthermore, circRNAs and gut microbiota have been recommended as biological markers for therapeutic targets as well as diagnostic and prognostic purposes. Targeting circRNAs and the gut microbiota for the treatment of gastrointestinal cancers is also being continued to study. Despite significant initiatives, the connection between circRNAs and the gut microbiota and the emergence of gastrointestinal cancers remains poorly understood. In this study, we will go over the most recent studies to emphasize the key roles of circRNAs and gut microbiota in gastrointestinal cancer progression and therapeutic options. In order to create effective therapies and plan for the future gastrointestinal therapy, it is important to comprehend the functions and mechanisms of circRNAs and the gut microbiota.
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Affiliation(s)
- Sara Tharwat Abdullah
- Department of Pharmacology and Toxicology, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Snur Rasool Abdullah
- Medical Laboratory Science, College of Health Sciences, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | - Bashdar Mahmud Hussen
- Department of Biomedical Sciences, College of Science, Cihan University-Erbil, Kurdistan Region, 44001, Iraq
- Department of Clinical Analysis, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq
| | - Yousif Mohammed Younis
- Department of Nursing, College of Nursing, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | - Mohammed Fatih Rasul
- Department of Pharmaceutical Basic Science, Faculty of Pharmacy, Tishk International University, Erbil, Kurdistan Region, Iraq
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Kim M, Jang YJ, Lee M, Guo Q, Son AJ, Kakkad NA, Roland AB, Lee BK, Kim J. The transcriptional regulatory network modulating human trophoblast stem cells to extravillous trophoblast differentiation. Nat Commun 2024; 15:1285. [PMID: 38346993 PMCID: PMC10861538 DOI: 10.1038/s41467-024-45669-2] [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: 11/17/2022] [Accepted: 01/31/2024] [Indexed: 02/15/2024] Open
Abstract
During human pregnancy, extravillous trophoblasts play crucial roles in placental invasion into the maternal decidua and spiral artery remodeling. However, regulatory factors and their action mechanisms modulating human extravillous trophoblast specification have been unknown. By analyzing dynamic changes in transcriptome and enhancer profile during human trophoblast stem cell to extravillous trophoblast differentiation, we define stage-specific regulators, including an early-stage transcription factor, TFAP2C, and multiple late-stage transcription factors. Loss-of-function studies confirm the requirement of all transcription factors identified for adequate differentiation, and we reveal that the dynamic changes in the levels of TFAP2C are essential. Notably, TFAP2C pre-occupies the regulatory elements of the inactive extravillous trophoblast-active genes during the early stage of differentiation, and the late-stage transcription factors directly activate extravillous trophoblast-active genes, including themselves as differentiation further progresses, suggesting sequential actions of transcription factors assuring differentiation. Our results reveal stage-specific transcription factors and their inter-connected regulatory mechanisms modulating extravillous trophoblast differentiation, providing a framework for understanding early human placentation and placenta-related complications.
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Affiliation(s)
- Mijeong Kim
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Yu Jin Jang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Muyoung Lee
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Qingqing Guo
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Albert J Son
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Nikita A Kakkad
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Abigail B Roland
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Bum-Kyu Lee
- Department of Biomedical Sciences, Cancer Research Center, University at Albany, State University of New York, Rensselaer, NY, 12144, USA
| | - Jonghwan Kim
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA.
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Du L, Yang J, Qin S, Ding S, Guo Y, Wang J. Appraising the value of CircRNAs for the diagnosis and prognosis of esophageal squamous cell cancer: An updated meta-analysis. Pathol Res Pract 2024; 254:155074. [PMID: 38246036 DOI: 10.1016/j.prp.2023.155074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024]
Abstract
OBJECTIVE The purpose of this study was to thoroughly assess the relevance of circular RNAs (circRNAs) in the diagnosis and prognosis of esophageal squamous cell carcinoma (ESCC), and design a systematic review and meta-analysis. METHODS Using Stata 14.0 software, a meta-analysis was carried out by looking for pertinent studies up to February 20, 2023, in the online databases PubMed, Embase, Web of Science, and CNKI. The clinicopathologic and prognostic data were evaluated using the combined advantage ratio (OR) and combined hazard ratio (HR), respectively. The threshold effects and publication bias were quantified using Spearman's correlation and the Deeks funnel plot asymmetry tests, respectively. RESULTS A total of 36 pertinent studies with a literature quality score of 7 or above were included in this study. Of them, 22 papers dealt with clinicopathological characterization, 15 dealt with prognostic analysis, and 13 dealt with diagnostic analysis. The findings demonstrated that high expression of upregulated circRNAs was associated with worse clinicopathological features (tumor size: OR=3.61, 95% CI:1.45-5.78; TNM stage: OR=2.12, 95% CI:1.41-2.83; lymph node metastasis: OR=2.87, 95% CI:1.67-4.07) and worse OS (HR=1.49, 95% CI:1.26-1.77). High downregulated circRNAs expression was linked to improved clinicopathologic characteristics (TNM staging: OR=0.35, 95% CI:0.13- 0.95) and longer survival (HR=0.48, 95% CI:0.27-0.84); combined sensitivity was 0.77 (95% CI: 0.71-0.82), specificity was 0.80 (95% CI:0.74-0.86), and area under the subject operating characteristic curve (AUC) was 0.86 (95% CI:0.82- 0.88). CONCLUSION CircRNAs are useful for ESCC patient diagnosis and prognosis, and they are anticipated to be unique potential biomarkers for ESCC clinical diagnosis.
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Affiliation(s)
- Lihong Du
- Changzhi Medical College Affiliated Heping Hospital, Changzhi, Shanxi Province, 046000, China; Department of Pathology, Changzhi Medical College, Changzhi, Shanxi Province 046000, China; First Clinical College of Changzhi Medical College, Changzhi, Shanxi Province 046000, China
| | - Jianzhou Yang
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi Province 046000, China
| | - Shaoze Qin
- First Clinical College of Changzhi Medical College, Changzhi, Shanxi Province 046000, China
| | - Shuyu Ding
- First Clinical College of Changzhi Medical College, Changzhi, Shanxi Province 046000, China
| | - Yuwei Guo
- First Clinical College of Changzhi Medical College, Changzhi, Shanxi Province 046000, China
| | - Jinsheng Wang
- Changzhi Medical College Affiliated Heping Hospital, Changzhi, Shanxi Province, 046000, China; Department of Pathology, Changzhi Medical College, Changzhi, Shanxi Province 046000, China; Key Laboratory of Shanxi Provincial Health Commission, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi Province 046000, China.
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Luo Q, Li J, Miao H, Su S, Chen Y, Xu C, Zhao C, Huang J, Ling K, Lin C, Yan H, Zhang S. circSSPO boosts growth of esophageal squamous cell carcinoma through upregulation of micrRNA-6820-5p-mediated KLK8 and PKD1 expression. Cell Biol Toxicol 2023; 39:3219-3234. [PMID: 37812360 DOI: 10.1007/s10565-023-09828-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 08/13/2023] [Indexed: 10/10/2023]
Abstract
Investigation on a competitive endogenous RNA (ceRNA) network attracted lots of attention due its function in cancer regulation. Here, we probed into the possible molecular mechanism of circSSPO/microRNA-6820-5p (miR-6820-5p)/kallikrein-related peptidase 8 (KLK8)/PKD1 network in the esophageal squamous cell carcinoma (ESCC). Following whole-transcriptome sequencing and differential analysis in collected ESCC tissue samples, circRNA-miRNA-mRNA regulatory network affecting ESCC was investigated. After interaction measurement among circSSPO/miR-6820-5p/KLK8/PKD1, their regulatory roles in ESCC cell functions in vitro and xenograft tumor growth and lung metastasis in vivo were analyzed. The bioinformatics prediction and sequencing results screened that circSSPO, miR-6820-5p, KLK8, and PKD1 were associated with ESCC development. In ESCC, miR-6820-5p was expressed at very low levels, while circSSPO, KLK8, and PKD1 were highly expressed. In vitro cell experiments further proved that circSSPO competitively inhibited miR-6820-5p to induce ESCC cell malignant properties. Moreover, knockdown of KLK8 or PKD1 inhibited ESCC cell malignant properties. circSSPO also promoted the tumorigenic and metastasis of ESCC through the upregulation of KLK8 and PKD1 expression in vivo. We found that circSSPO was an oncogenic circRNA that was significantly abundant in ESCC tissues and circSSPO exhibited an oncogenic activity in ESCC by elevating expression of KLK8 and PKD1 through suppressing miR-6820-5p expression.
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Affiliation(s)
- Qianhua Luo
- Clinical Pharmacy Research Center, Shantou University Medical College, Shantou, 515041, People's Republic of China
- Department of Pharmacy, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), No. 396, Tongfuzhong Road, Haizhu District, Guangzhou, 510220, People's Republic of China
| | - Junzheng Li
- Department of Otolaryngology-Head and Neck Surgery, Zhujiang Hospital of Southern Medical University, Guangzhou, 510280, China
| | - Haixiong Miao
- Department of Orthopaedics, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Guangzhou, 510220, People's Republic of China
| | - Siman Su
- Clinical Pharmacy Research Center, Shantou University Medical College, Shantou, 515041, People's Republic of China
| | - Yun Chen
- Department of Pharmacy, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), No. 396, Tongfuzhong Road, Haizhu District, Guangzhou, 510220, People's Republic of China
| | - Chengcheng Xu
- Department of Pharmacy, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), No. 396, Tongfuzhong Road, Haizhu District, Guangzhou, 510220, People's Republic of China
| | - Chengkuan Zhao
- Department of Pharmacy, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), No. 396, Tongfuzhong Road, Haizhu District, Guangzhou, 510220, People's Republic of China
| | - Jianxiang Huang
- Department of Pharmacy, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), No. 396, Tongfuzhong Road, Haizhu District, Guangzhou, 510220, People's Republic of China
| | - Kai Ling
- Clinical Pharmacy Research Center, Shantou University Medical College, Shantou, 515041, People's Republic of China
| | - Chaoxian Lin
- Clinical Pharmacy Research Center, Shantou University Medical College, Shantou, 515041, People's Republic of China.
- Shantou Chaonan Minsheng Hospital, Shantou, 515144, People's Republic of China.
| | - Hongfei Yan
- Department of Pathology, Cancer Hospital of Shantou University Medical College, Shantou, 515031, People's Republic of China.
| | - Shuyao Zhang
- Clinical Pharmacy Research Center, Shantou University Medical College, Shantou, 515041, People's Republic of China.
- Department of Pharmacy, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), No. 396, Tongfuzhong Road, Haizhu District, Guangzhou, 510220, People's Republic of China.
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Si X, Su X, Lin W, Xu J, Huang W, Chen F, Huang Z, Lin J, Chen Z. Circ_ZNF778_006 promoted ESCC progression by upregulating HIF-1α expression via sponging miR-18b-5p. Sci Rep 2023; 13:19363. [PMID: 37938614 PMCID: PMC10632521 DOI: 10.1038/s41598-023-46832-3] [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: 03/04/2023] [Accepted: 11/06/2023] [Indexed: 11/09/2023] Open
Abstract
In multiple malignant tumors, circular RNAs (circRNAs) are believed to play a crucial role. Our prior results demonstrated that circ_ZNF778_006 was significantly increased in esophageal squamous cell carcinoma (ESCC) tissues, but the roles of circ_ZNF778_006 in ESCC is still not clear. The expression of circ_ZNF778_006 was compared in different pathological grades of ESCC. And the expression levels of circ_ZNF778_006, miR-18b-5p, HIF-1α were analyzed by qRT-PCR and Western blot, respectively. Plasmid transfection techniques were applied to prepare ESCC cells with silenced or overexpressed genes (CircZNF778_006, miR-18b-5p). The CCK8 kit was used to determine cell proliferation, and the Transwell assay was used to measure the migration and invasion. The effects of circ_ZNF778_006 on tumor growth was investigated in vivo. Furthermore, luciferase reporter gene assay and RNA-binding protein immunoprecipitation (RIP) were performed to verify the targeting relationship between miR-18b-5p and circZNF778_006, miR-18b-5p and HIF-1α. The expression of circ_ZNF778_006 was positively correlated with pathological grade in ESCC. Circ_ZNF778_006 significantly inhibited sensitivity to 5-fluorouracil & cisplatin. It could promote the proliferation, invasion, migration in ESCC cells and accelerated tumor growth in vivo. Furthermore, circ_ZNF778_006 could upregulate the expression of HIF-1α via sponing miR-18b-5p. Circ_ZNF778_006 promoted ESCC progression by upregulating HIF-1α expression via sponging miR-18b-5p.
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Affiliation(s)
- Xianzhe Si
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Xincheng Su
- Department of Gastrointestinal Surgery, The Union Hospital of Fujian Medical University, Fuzhou, 350000, Fujian Province, China
| | - Weijie Lin
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Jie Xu
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Wenbo Huang
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Feng Chen
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Zhijun Huang
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China.
| | - Jianqing Lin
- Department of Oncology, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China.
| | - Zhiyao Chen
- Department of Gastrointestinal and Esophageal Surgery, The 2nd Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China.
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Luo X, Liu J, Wang X, Wang Y, Yuan J, Zhang Y. Circ_0005615 promotes cervical cancer cell growth and metastasis by modulating the miR-138-5p/KDM2A axis. J Biochem Mol Toxicol 2023; 37:e23410. [PMID: 37393518 DOI: 10.1002/jbt.23410] [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: 04/16/2022] [Revised: 04/25/2023] [Accepted: 06/08/2023] [Indexed: 07/03/2023]
Abstract
Cervical cancer (CC) is a highly fatal gynecological malignancy due to its high metastasis and recurrence rate. Circular RNA (circRNA) has been regarded as a regulator of CC. However, the underlying molecular mechanism of circ_0005615 in CC remains unclear. The levels of circ_0005615, miR-138-5p, and lysine demethylase 2A (KDM2A) were measured using qRT-PCR or western blot. Cell proliferation was assessed by Cell Counting Kit-8, 5-ethynyl-2'-deoxyuridine, and colony formation experiments. Cell invasion and migration were tested by transwell assay and wound healing assay. Flow cytometry and Caspase-Glo 3/7 Assay kit were used to analyze cell apoptosis. The expression of proliferation-related and apoptosis-related markers was detected by western blot. The binding relationships among circ_0005615, miR-138-5p, and KDM2A were verified by dual-luciferase reporter assay or RNA immunoprecipitation assay. Xenograft assay was applied to detect the effect of circ_0005615 in vivo. Circ_0005615 and KDM2A were upregulated, while miR-138-5p was downregulated in CC tissues and cells. Circ_0005615 knockdown retarded cell proliferation, migration, and invasion, while promoting apoptosis. Besides, circ_0005615 sponged miR-138-5p, and miR-138-5p could target KDM2A. miR-138-5p inhibitor reversed the regulation of circ_0005615 knockdown on CC cell growth and metastasis, and KDM2A overexpression also abolished the inhibitory effect of miR-138-5p on CC cell growth and metastasis. In addition, we also discovered that circ_0005615 silencing inhibited CC tumor growth in vivo. Circ_0005615 acted as a tumor promoter in CC by regulating the miR-138-5p/KDM2A pathway.
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Affiliation(s)
- Xiaoning Luo
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Jiewen Liu
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Xiangcai Wang
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Yili Wang
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Jun Yuan
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Yu Zhang
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, China
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10
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Sun P, Chen M, Sooranna SR, Shi D, Liu Q, Li H. The emerging roles of circRNAs in traits associated with livestock breeding. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1775. [PMID: 36631071 DOI: 10.1002/wrna.1775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 12/22/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023]
Abstract
Many indicators can be used to evaluate the productivity and quality of livestock, such as meat and milk production as well as fat deposition. Meat and milk production are measures of livestock performance, while fat deposition affects the taste and flavor of the meat. The circRNAs, are non-coding RNAs, that are involved in the regulation of all these three traits. We review the functions and mechanisms of circRNAs in muscle and fat development as well as lactation to provide a theoretical basis for circRNA research in animal husbandry. Various phenotypic changes presented in livestock may be produced by different circRNAs. Our current concern is how to use the roles played by circRNAs to our advantage to produce the best possible livestock. Hence, we describe the advantages and disadvantages of knockout techniques for circRNAs. In addition, we also put forward our thoughts regarding the mechanism and network of circRNAs to provide researchers with novel ideas of how molecular biology can help us advance our goals in animal farming. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications RNA Interactions with Proteins and Other Molecules > Protein-RNA Recognition RNA Interactions with Proteins and Other Molecules > RNA-Protein Complexes.
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Affiliation(s)
- Ping Sun
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Mengjie Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Suren R Sooranna
- Institute of Reproductive and Developmental Biology, Imperial College London, London, UK
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Qingyou Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Hui Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
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11
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Li J, Song Y, Cai H, Zhou B, Ma J. Roles of circRNA dysregulation in esophageal squamous cell carcinoma tumor microenvironment. Front Oncol 2023; 13:1153207. [PMID: 37384299 PMCID: PMC10299836 DOI: 10.3389/fonc.2023.1153207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/30/2023] [Indexed: 06/30/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is the most prevalent histological esophageal cancer characterized by advanced diagnosis, metastasis, resistance to treatment, and frequent recurrence. In recent years, numerous human disorders such as ESCC, have been linked to abnormal expression of circular RNAs (circRNAs), suggesting that they are fundamental to the intricate system of gene regulation that governs ESCC formation. The tumor microenvironment (TME), referring to the area surrounding the tumor cells, is composed of multiple components, including stromal cells, immune cells, the vascular system, extracellular matrix (ECM), and numerous signaling molecules. In this review, we briefly described the biological purposes and mechanisms of aberrant circRNA expression in the TME of ESCC, including the immune microenvironment, angiogenesis, epithelial-to-mesenchymal transition, hypoxia, metabolism, and radiotherapy resistance. As in-depth research into the processes of circRNAs in the TME of ESCC continues, circRNAs are promising therapeutic targets or delivery systems for cancer therapy and diagnostic and prognostic indicators for ESCC.
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Affiliation(s)
- Jingyi Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuxia Song
- Department of Reproductive Medicine, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Huihong Cai
- Department of Clinical Laboratory, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Bo Zhou
- Medical Research Center, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jun Ma
- Department of Clinical Laboratory, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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12
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Mahmoudian RA, Akhlaghipour I, Lotfi M, Shahidsales S, Moghbeli M. Circular RNAs as the pivotal regulators of epithelial-mesenchymal transition in gastrointestinal tumor cells. Pathol Res Pract 2023; 245:154472. [PMID: 37087995 DOI: 10.1016/j.prp.2023.154472] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023]
Abstract
Gastrointestinal (GI) cancers, as the most common human malignancies are always considered one of the most important health challenges in the world. Late diagnosis in advanced tumor stages is one of the main reasons for the high mortality rate and treatment failure in these patients. Therefore, investigating the molecular pathways involved in GI tumor progression is required to introduce the efficient markers for the early tumor diagnosis. Epithelial-mesenchymal transition (EMT) is one of the main cellular mechanisms involved in the GI tumor metastasis. Non-coding RNAs (ncRNAs) are one of the main regulatory factors in EMT process. Circular RNAs (circRNAs) are a group of covalently closed loop ncRNAs that have higher stability in body fluids compared with other ncRNAs. Considering the importance of circRNAs in regulation of EMT process, in the present review we discussed the role of circRNAs in EMT process during GI tumor invasion. It has been reported that circRNAs mainly affect the EMT process through the regulation of EMT-specific transcription factors and signaling pathways such as WNT, PI3K/AKT, TGF-β, and MAPK. This review can be an effective step in introducing a circRNA/EMT based diagnostic panel marker for the early tumor detection among GI cancer patients.
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Affiliation(s)
- Reihaneh Alsadat Mahmoudian
- Basic Sciences Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Malihe Lotfi
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Meysam Moghbeli
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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13
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Yao W, Jia X, Zhu L, Xu L, Zhang Q, Xia T, Wei L. Exosomal circ_0026611 contributes to lymphangiogenesis by reducing PROX1 acetylation and ubiquitination in human lymphatic endothelial cells (HLECs). Cell Mol Biol Lett 2023; 28:13. [PMID: 36803975 PMCID: PMC9936748 DOI: 10.1186/s11658-022-00410-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 11/24/2022] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND Esophageal squamous carcinoma (ESCC) is a common malignancy that originates in the digestive tract. Lymph node metastasis (LNM) is a complicated process, and tumor lymphangiogenesis has been reported to be associated with the spread of tumor cells to lymph nodes (LNs), including in ESCC. However, little is currently known about the mechanisms involved in lymphangiogenesis in ESCC tumors. According to previous literature, we know that hsa_circ_0026611 expresses at a high level in serum exosomes of patients with ESCC and shows a close association with LNM and poor prognosis. However, details on the functions of circ_0026611 in ESCC remain unclear. We aim to explore the effects of circ_0026611 in ESCC cell-derived exosomes on lymphangiogenesis and its potential molecular mechanism. METHODS We firstly examined how circ_0026611 may express in ESCC cells and exosomes by quantitative reverse transcription real-time polymerase chain reaction (RT-qPCR). The potential effects circ_0026611 may exert on lymphangiogenesis in ESCC cell-derived exosomes were assessed afterward via mechanism experiments. RESULTS circ_0026611 high expression pattern was confirmed in ESCC cells and exosomes. ESCC cell-derived exosomes promoted lymphangiogenesis by transferring circ_0026611. Besides, circ_0026611 interacted with N-α-acetyltransferase 10 (NAA10) to inhibit NAA10-mediated prospero homeobox 1 (PROX1) acetylation with subsequent ubiquitination and degradation. Furthermore, circ_0026611 was verified to promote lymphangiogenesis in a PROX1-mediated manner. CONCLUSIONS Exosomal circ_0026611 inhibited PROX1 acetylation and ubiquitination to promote lymphangiogenesis in ESCC.
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Affiliation(s)
- Wenjian Yao
- grid.256922.80000 0000 9139 560XDepartment of Thoracic Surgery, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003 Henan China
| | - Xiangbo Jia
- grid.256922.80000 0000 9139 560XDepartment of Thoracic Surgery, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003 Henan China
| | - Li Zhu
- grid.414011.10000 0004 1808 090XDepartment of Thoracic Surgery, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, 450003 Henan China
| | - Lei Xu
- grid.256922.80000 0000 9139 560XDepartment of Thoracic Surgery, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003 Henan China
| | - Quan Zhang
- grid.256922.80000 0000 9139 560XDepartment of Thoracic Surgery, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003 Henan China
| | - Tian Xia
- grid.256922.80000 0000 9139 560XDepartment of Thoracic Surgery, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003 Henan China
| | - Li Wei
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan, China.
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14
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Hu T, Peng H, Yang F, Zhang F, He J. Circ_0024108 promotes the progression of esophageal cancer cells. Gen Thorac Cardiovasc Surg 2023:10.1007/s11748-023-01909-8. [PMID: 36757626 DOI: 10.1007/s11748-023-01909-8] [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: 10/25/2022] [Accepted: 01/18/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND Esophageal squamous cell carcinoma (ESCC) is a serious malignant cancer. The treatment effect of ESCC is relatively poor and needs further improvement. According to reports, circular RNAs (circRNAs) actively participate in human carcinogenesis. More explorations are needed about the action of circRNAs in ESCC. METHODS Circ_0024108, miR-488-3p, and USP14 was quantified by a qRT-PCR or immunoblotting method. Cell proliferation evaluation was performed by MTT, EdU, and colony formation assays. Evaluation of cell motility and invasiveness was conducted using wound healing assay and transwell assay. The regulatory mechanism of circ_0024108, miR-488-3p, and USP14 was detected by RNA pull-down assay and dual-luciferase reporter assay. RESULTS Circ_0024108 and USP14 were significantly overexpressed in ESCC, while miR-488-3p was underexpressed. Deficiency of circ_0024108 impeded cell growth, motility, and invasiveness. Circ_0024108 regulated the expression of USP14 in ESCC cells via miR-488-3p. Also, circ_0024108 was present at high levels in serum exosomes from ESCC patients with high specificity and sensitivity. CONCLUSIONS Taken together, circ_0024108 participated in the progress of ESCC through the miR-488-3p/USP14 axis. Circ_0024108 was differentially expressed in serum exosomes. Circ_0024108 might be a potential biomarker for the diagnosis of ESCC.
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Affiliation(s)
- Tongchen Hu
- Department of Thoracic Surgery, The Affiliated Hospital of Southwest Medical University, No. 25 TaiPing St, Jiangyang District, Luzhou, 646000, Sichuan, People's Republic of China
| | - Huali Peng
- Department of Thoracic Surgery, The People's Hospital of Leshan, Leshan, 614000, Sichuan, China
| | - Fan Yang
- Department of Thoracic Surgery, The People's Hospital of Leshan, Leshan, 614000, Sichuan, China
| | - Fan Zhang
- Department of Thoracic Surgery, The People's Hospital of Leshan, Leshan, 614000, Sichuan, China
| | - Jintao He
- Department of Thoracic Surgery, The Affiliated Hospital of Southwest Medical University, No. 25 TaiPing St, Jiangyang District, Luzhou, 646000, Sichuan, People's Republic of China.
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15
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Zhou Q, Lei C, Cui F, Chen H, Cao X. Circ-ATIC regulates esophageal squamous cell carcinoma growth and metastasis through miR-1294/PBX3 pathway. Heliyon 2023; 9:e12916. [PMID: 36699282 PMCID: PMC9868444 DOI: 10.1016/j.heliyon.2023.e12916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a digestive tract malignancy associated with poor clinical outcome. Growing evidence have elucidated that circular RNAs (circRNAs) play important roles in the pathological process of ESCC. However, the detailed mechanisms how circRNAs modulate the development of ESCC remain largely unknown. Our study aimed to decipher the role and mechanism of circ-ATIC (also termed as circRNA_0058063) in regulating the progression of ESCC. We found that circ-ATIC and its host gene ATIC were significantly increased in ESCC tissues and cells compared with the adjacent noncancerous tissues or normal esophagus epithelial cell. Circ-ATIC knockdown substantially reduced proliferation and the number of invaded ESCC cells and retarded EMT process, reflecting by the decreased N-cadherin and elevated E-cadherin. However, the level of host gene ATIC was not changed under circ-ATIC suppression. It was predicted that circ-ATIC could bind to miR-1294 and serve as a sponge RNA. The luciferase reporter assay and RNA immunoprecipitation (RIP) assay confirmed their relations. MiR-1294 was decreased in ESCC tissues and cells, which was reversely correlated with circ-ATIC level. Furthermore, PBX3 was predicted and proved to be a downstream direct target of miR-1294. PBX3 mRNA and protein were obviously upregulated in ESCC tumor tissues and cells. PBX3 overexpression could reverse the suppressive roles of miR-1294 mimics on ESCC proliferation and invasion. In an xenograft nude mice model, stable transfection of sh-circ-ATIC significantly retarded the growth of tumor and suppressed VEGF and Ki67. Collectively, circ-ATIC promoted ESCC proliferation and invasion by regulating miR-1294/PBX3 axis.
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Affiliation(s)
- Qian Zhou
- Department of Cardiothoracic Surgery, Jingzhou Central Hospital (Jingzhou Hospital Affiliated to Yangtze University), Jingzhou, 434000, Hubei, PR China
| | - Chengang Lei
- Department of Cardiothoracic Surgery, Jingzhou Central Hospital (Jingzhou Hospital Affiliated to Yangtze University), Jingzhou, 434000, Hubei, PR China
| | - Fenghe Cui
- Department of Cardiothoracic Surgery, Jingzhou Central Hospital (Jingzhou Hospital Affiliated to Yangtze University), Jingzhou, 434000, Hubei, PR China
| | - Hao Chen
- Department of Cardiothoracic Surgery, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, 442008, Hubei, PR China
| | - Xianzhao Cao
- Department of Cardiothoracic Surgery, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, 442008, Hubei, PR China,Corresponding author. Department of Cardiothoracic Surgery, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, No. 16 Daling Road, Zhangwan District, Shiyan, 442008, Hubei, PR China.
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16
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Duan H, Ding X, Luo H. KISS-1, Mediated by Promoter Methylation, Suppresses Esophageal Squamous Cell Carcinoma Metastasis via MMP2/9/MAPK Axis. Dig Dis Sci 2022; 67:4780-4796. [PMID: 34993679 DOI: 10.1007/s10620-021-07335-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS KISS-1 is an established tumor suppressor that inhibits metastases in various malignancies. However, little is known regarding its role in esophageal squamous cell carcinoma (ESCC). The aim of the present study was to identify the possible mechanisms of KISS-1 in ESCC metastasis. METHODS The expression levels of KISS-1 mRNA and protein in ESCC samples and cell lines were analyzed by qRT-PCR, IHC, and western blotting. Bisulfite sequencing PCR (BSP) and methylation-specific PCR (MSP) were used to analyze the methylation pattern of KISS-1 promoter in ESCC cells with or without 5-Aza-dC treatment. The role of KISS-1 in the progression and metastasis of ESCC was analyzed through in vitro functional assays. RESULTS KISS-1 mRNA and protein were markedly downregulated in ESCC tissues and cell lines compared to the respective controls. Hypermethylation of KISS-1 promoter correlated to its lower expression levels in ESCC, and KISS-1 demethylation inhibited tumor progression. Ectopic KISS-1 overexpression inhibited tumor cell metastasis in vitro. In addition, KISS-1 overexpression downregulated the matrix metalloproteinase 2 and 9 (MMP2 and 9) and inhibited epithelial-mesenchymal transition (EMT). Finally, KISS-1 downregulated phosphorylated extracellular regulated protein kinase 1/2 (ERK1/2) and phosphorylated p38 mitogen-activated protein kinase (MAPK) without affecting their total expression levels in the ESCC cells. MAPK/ERK and p38 MAPK agonists reversed the suppressive effects of KISS-1. CONCLUSIONS The hypermethylation of KISS-1 promoter partly contributed to its downregulation in ESCC. KISS-1 inhibits the metastasis of ESCC cells by targeting the MMP2/9/ERK/p38 MAPK axis.
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Affiliation(s)
- Houyu Duan
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China
| | - Xiang Ding
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China
| | - Hesheng Luo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China.
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17
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Matuszyk J. MALAT1-miRNAs network regulate thymidylate synthase and affect 5FU-based chemotherapy. Mol Med 2022; 28:89. [PMID: 35922756 PMCID: PMC9351108 DOI: 10.1186/s10020-022-00516-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/22/2022] [Indexed: 12/12/2022] Open
Abstract
Background The active metabolite of 5-Fluorouracil (5FU), used in the treatment of several types of cancer, acts by inhibiting the thymidylate synthase encoded by the TYMS gene, which catalyzes the rate-limiting step in DNA replication. The major failure of 5FU-based cancer therapy is the development of drug resistance. High levels of TYMS-encoded protein in cancerous tissues are predictive of poor response to 5FU treatment. Expression of TYMS is regulated by various mechanisms, including involving non-coding RNAs, both miRNAs and long non-coding RNAs (lncRNAs). Aim To delineate the miRNAs and lncRNAs network regulating the level of TYMS-encoded protein. Main body Several miRNAs targeting TYMS mRNA have been identified in colon cancers, the levels of which can be regulated to varying degrees by lncRNAs. Due to their regulation by the MALAT1 lncRNA, these miRNAs can be divided into three groups: (1) miR-197-3p, miR-203a-3p, miR-375-3p which are downregulated by MALAT1 as confirmed experimentally and the levels of these miRNAs are actually reduced in colon and gastric cancers; (2) miR-140-3p, miR-330-3p that could potentially interact with MALAT1, but not yet supported by experimental results; (3) miR-192-5p, miR-215-5p whose seed sequences do not recognize complementary response elements within MALAT1. Considering the putative MALAT1-miRNAs interaction network, attention is drawn to the potential positive feedback loop causing increased expression of MALAT1 in colon cancer and hepatocellular carcinoma, where YAP1 acts as a transcriptional co-factor which, by binding to the TCF4 transcription factor/ β-catenin complex, may increase the activation of the MALAT1 gene whereas the MALAT1 lncRNA can inhibit miR-375-3p which in turn targets YAP1 mRNA. Conclusion The network of non-coding RNAs may reduce the sensitivity of cancer cells to 5FU treatment by upregulating the level of thymidylate synthase.
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Affiliation(s)
- Janusz Matuszyk
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 R. Weigla Street, 53-114, Wroclaw, Poland.
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18
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Wang J, Li X, Duan C, Jia Y. CircFNDC3B
knockdown restrains the progression of esophageal squamous cell carcinoma through
miR
‐214‐3p/
CDC25A
axis. Clin Exp Pharmacol Physiol 2022; 49:1209-1220. [DOI: 10.1111/1440-1681.13707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/01/2022] [Accepted: 07/27/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Jiawei Wang
- Department of Thoracic Surgery Affiliated Hospital of Jiangnan University Wuxi China
| | - Xiaolin Li
- Department of Thoracic Surgery Affiliated Hospital of Jiangnan University Wuxi China
| | - Chao Duan
- Department of Thoracic Surgery Affiliated Hospital of Jiangnan University Wuxi China
| | - Yifei Jia
- Department of Thoracic Surgery Affiliated Hospital of Jiangnan University Wuxi China
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19
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Xu P, Wang L, Liu Q, Gao P, Hu F, Xie X, Jiang L, Bi R, Ding F, Yang Q, Xiao H. The abnormal expression of circ-ARAP2 promotes ESCC progression through regulating miR-761/FOXM1 axis-mediated stemness and the endothelial-mesenchymal transition. Lab Invest 2022; 20:318. [PMID: 35842667 PMCID: PMC9287963 DOI: 10.1186/s12967-022-03507-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/24/2022] [Indexed: 12/15/2022]
Abstract
Circular RNAs (circRNAs) belong to a novel class of noncoding RNA that gained more attention in human cancer pathogenesis. The role of circRNA in esophageal squamous cell carcinoma (ESCC) is largely unclear. Present investigation was to characterize new circRNAs regulating ESCC progression and explore the regulatory mechanisms in ESCC. In this study, circRNAs differentially expressed in ESCC and adjacent normal tissues were characterized via high-throughput sequencing. Then the differentially expressed circRNA between ESCC and adjacent normal tissues were investigated using Rt-qPCR. The role of circ-ARAP2 expression on tumor progression were detected in both in vivo and in vitro. Luciferase reporter assays were used to identify the relationships among circ-ARAP2, microRNA (miR)-761 and the cell cycle regulator Forkhead Box M1 (FOXM1). The result of the expression profile analyses regarding human circRNAs in ESCC demonstrated that circ-ARAP2 was up-regulated significantly in both ESCC tissues and cell lines. Downregulation circ-ARAP2 suppressed ESCC proliferation, tumor growth and metastasis in both in vivo and in vitro. The data also suggested that miR-761 and FOXM1 were circ-ARAP2 downstream targets which were confirmed through luciferase reporter analysis. Overexpression of FOXM1 or inhibiting miR-761 restored ESCC cell proliferation and invasion ability after silencing circ-ARAP2. The study also found that circ-ARAP2 influenced the endothelial-mesenchymal transition (EMT) and cancer stem cells differently by regulating miR-761/FOXM1. In one word, the results demonstrated that abnormal circ-ARAP2 expression promoted ESCC progression by regulating miR-761/FOXM1 axis-mediated stemness and EMT.
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Affiliation(s)
- Pei Xu
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Lei Wang
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Qingtao Liu
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Pengkai Gao
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Fengqing Hu
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Xiao Xie
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Lianyong Jiang
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Rui Bi
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China
| | - Fangbao Ding
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China.
| | - Qi Yang
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China.
| | - Haibo Xiao
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No 1665 Kongjiang Road, Yangpu District, Shanghai, 200092, China.
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20
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circRNA: A New Biomarker and Therapeutic Target for Esophageal Cancer. Biomedicines 2022; 10:biomedicines10071643. [PMID: 35884948 PMCID: PMC9313320 DOI: 10.3390/biomedicines10071643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 12/19/2022] Open
Abstract
Circular RNAs (circRNAs) comprise a large class of endogenous non-coding RNA with covalently closed loops and have independent functions as linear transcripts transcribed from identical genes. circRNAs are generated by a “back-splicing” process regulated by regulatory elements in cis and associating proteins in trans. Many studies have shown that circRNAs play important roles in multiple processes, including splicing, transcription, chromatin modification, miRNA sponges, and protein decoys. circRNAs are highly stable because of their closed ring structure, which prevents them from degradation by exonucleases, and are more abundant in terminally differentiated cells, such as brains. Recently, it was demonstrated that numerous circRNAs are differentially expressed in cancer cells, and their dysfunction is involved in tumorigenesis and metastasis. However, the crucial functions of these circRNAs and the dysregulation of circRNAs in cancer are still unknown. In this review, we summarize the recent reports on the biogenesis and biology of circRNAs and then catalog the advances in using circRNAs as biomarkers and therapeutic targets for cancer therapy, particularly esophageal cancer.
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21
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Luo C, Zhao X, Wang Y, Li Y, Wang T, Li S. A novel circ_0000654/miR-375/E2F3 ceRNA network in esophageal squamous cell carcinoma. Thorac Cancer 2022; 13:2223-2234. [PMID: 35790503 PMCID: PMC9346169 DOI: 10.1111/1759-7714.14550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
Background The competing endogenous RNA (ceRNA) activity of circular RNAs (circRNAs) has been implicated in the pathogenesis of cancers, including esophageal squamous cell carcinoma (ESCC). Here, we identified the ceRNA mechanism of circ_0000654 regulation in ESCC. Methods The levels of circ_0000654, E2F transcription factor 3 (E2F3), and microRNA (miR)‐375 were gauged by quantitative real‐time PCR (qRT‐PCR) and western blot. Cell proliferation was assessed by 3‐(4,5‐dimethylthiazol‐2‐yl)‐5‐(3‐carboxymethoxyphenyl)‐2‐(4‐sulfophenyl)‐2H‐tetrazolium (MTS) and 5‐ethynyl‐2′‐deoxyuridine (EdU) assays. Cell apoptosis was detected by flow cytometry. Cell colony formation was tested by colony formation assay. Dual‐luciferase reporter, RNA pull‐down and RNA immunoprecipitation (RIP) assays were performed to confirm the direct relationship between miR‐375 and circ_0000654 or E2F3. Xenograft model assays were used to evaluate the effect of circ_0000654 in vivo. Results Circ_0000654 and E2F3 were upregulated in ESCC. Circ_0000654 depletion enhanced cell apoptosis and hindered cell proliferation and glycolysis in vitro, as well as weakened tumor growth in vivo. Increased expression of E2F3 counteracted the effects of circ_0000654 depletion. Mechanistically, E2F3 was a target of miR‐375, and circ_0000654 modulated E2F3 expression through sequestering miR‐375. Furthermore, miR‐375 upregulation phenocopied circ_0000654 knockdown in inhibiting ESCC progression. Conclusion Our findings identify a new circ_0000654/miR‐375/E2F3 ceRNA crosstalk for the oncogenic role of circ_0000654 in ESCC and establish a notion that targeting circ_0000654 and its pathways may have the potential to improve ESCC outcome.
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Affiliation(s)
- Chunyu Luo
- Department of Clinical Laboratory, Affiliated Hospital of Chifeng University, Chifeng, China
| | - Xiaowei Zhao
- Department of Clinical Laboratory, Affiliated Hospital of Chifeng University, Chifeng, China
| | - Yuan Wang
- Department of Clinical Laboratory, Affiliated Hospital of Chifeng University, Chifeng, China
| | - Yanqiu Li
- Department of Clinical Laboratory, Affiliated Hospital of Chifeng University, Chifeng, China
| | - Tuo Wang
- Department of Clinical Laboratory, Affiliated Hospital of Chifeng University, Chifeng, China
| | - Shumin Li
- Department of Clinical Laboratory, Affiliated Hospital of Chifeng University, Chifeng, China
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22
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Ju C, He J, Wang C, Sheng J, Jia J, Du D, Li H, Zhou M, He F. Current advances and future perspectives on the functional roles and clinical implications of circular RNAs in esophageal squamous cell carcinoma: more influential than expected. Biomark Res 2022; 10:41. [PMID: 35672804 PMCID: PMC9171998 DOI: 10.1186/s40364-022-00388-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/29/2022] [Indexed: 11/24/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most aggressive gastrointestinal cancers with high incidence and mortality. Therefore, it is necessary to identify novel sensitive and specific biomarkers for ESCC detection and treatment. Circular RNAs (circRNAs) are a type of noncoding RNAs featured by their covalently closed circular structure. This special structure makes circRNAs more stable in mammalian cells, coupled with their great abundance and tissue specificity, suggesting circRNAs may present enormous potential to be explored as valuable prognostic and diagnostic biomarkers for tumor. Mounting studies verified the critical roles of circRNAs in regulating ESCC cells malignant behaviors. Here, we summarized the current progresses in a handful of aberrantly expressed circRNAs, and elucidated their biological function and clinical significance in ESCC, and introduced a series of databases for circRNA research. With the improved advancement in high-throughput sequencing and bioinformatics technique, new frontiers of circRNAs will pave the path for the development of precision treatment in ESCC.
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Affiliation(s)
- Chenxi Ju
- Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jing He
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Chang Wang
- Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jinxiu Sheng
- Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jinlin Jia
- Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Dan Du
- Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Hongle Li
- Department of Molecular Pathology, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, 450008, China.
| | - Mingxia Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
| | - Fucheng He
- Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
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23
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Sun Z, Zhang S, Zhang N, Wang J, Wang J, Liu J. Circ_0005231 promotes the progression of esophageal squamous cell carcinoma via sponging miR-383-5p and regulating KIAA0101. Thorac Cancer 2022; 13:1751-1762. [PMID: 35524161 PMCID: PMC9200875 DOI: 10.1111/1759-7714.14450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/15/2022] [Accepted: 04/16/2022] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNAs (circRNAs) can act as key regulators in human cancers, including esophageal squamous cell carcinoma (ESCC). However, the role and mechanism of circ_0005231 in ESCC have not previously been reported. Methods RNA levels and protein levels were detected by real‐time quantitative polymerase chain reaction (RT‐qPCR) and Western blot assay, respectively. Cell proliferation was assessed by colony formation assay and 5‐ethynyl‐2'‐deoxyuridine (EdU) assay. Wound healing and transwell assays were used to assess cell migration and invasion, respectively. The intermolecular interaction was predicted by bioinformatic analysis and verified by RNA immunoprecipitation (RIP), RNA pulldown and dual‐luciferase reporter assays. Xenograft tumor model was used for exploring the biological function of circ_0005231 in vivo. Results Circ_0005231 was upregulated in ESCC plasma, tissues and cells. Cell proliferation, migration and invasion were significantly restrained by knockdown of circ_0005231 in ESCC cells. Circ_0005231 acted as a sponge of miR‐383‐5p, and circ_0005231 regulated ESCC cellular behavior by sponging miR‐383‐5p. Moreover, miR‐383‐5p directly targeted KIAA0101, and circ_0005231 positively regulated KIAA0101 expression by sponging miR‐383‐5p. Furthermore, circ_0005231 knockdown suppressed the malignant behavior of ESCC cells by downregulating KIAA0101. Importantly, knockdown of circ_0005231 blocked xenograft tumor growth in vivo. Conclusion Circ_0005231 acted as a sponge of miR‐383‐5p to promote ESCC progression by upregulating KIAA0101, which provided a potential therapeutic strategy for ESCC treatment.
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Affiliation(s)
- Zhiguang Sun
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.,Department of Thoracic Surgery, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Hebei, China
| | - Shaowei Zhang
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Nan Zhang
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jianxin Wang
- Department of Thoracic Surgery, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Hebei, China
| | - Jindong Wang
- Department of Thoracic Surgery, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Hebei, China
| | - Junfeng Liu
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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24
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Tang B, Zhang Q, Liu K, Huang Y. Exosomal circRNA FNDC3B promotes the progression of esophageal squamous cell carcinoma by sponging miR-490-5p and regulating thioredoxin reductase 1 expression. Bioengineered 2022; 13:13829-13848. [PMID: 35703190 PMCID: PMC9275986 DOI: 10.1080/21655979.2022.2084484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Exosomal circular RNAs (circRNAs) have been reported to play critical roles in esophageal squamous cell carcinoma (ESCC). We aimed to investigate the function of exosomal circRNA FNDC3B (circFNDC3B). The RNA levels and protein levels were examined using RT-qPCR and western blot (WB) assays. Colony formation and EdU assays were used to assess cell proliferative ability. Cell migratory and invasive abilities were detected by wound healing and transwell assays. Cell apoptosis was measured by flow cytometry. Glycolysis was measured using commercial kits. Transmission electron microscopy (TEM) and nanoparticle tracking analysis (NTA) were applied to examine the morphology and size of exosomes. Dual-luciferase reporter, RIP and RNA pull-down assays assessed the interaction of miR-490-5p with circFNDC3B or thioredoxin reductase 1 (TXNRD1). Xenograft tumor model determined the role of exosomal circFNDC3B in vivo. We observed that circFNDC3B was upregulated in ESCC samples and cells, as well as ESCC-derived exosomes. CircFNDC3B could be delivered via exosomes in tumor cells, and the colony formation, proliferation, migration, invasion, glycolysis, and in vivo growth ability of recipient cells were weakened after co-incubation with exosomal circFNDC3B-knockdown donor cells. CircFNDC3B was a miR-490-5p sponge, and miR-490-5p inhibition reversed the role of exosomal circFNDC3B-downregulating in ESCC cells. TXNRD1 was a miR-490-5p target, and TXNRD1 elevation weakened the anti-cancer function of miR-490-5p upregulation in ESCC cells. CircFNDC3B mediated TXNRD1 expression by interacting with miR-490-5p. In conclusion, exosomal circFNDC3B drove ESCC progression via regulating the miR-490-5p/TXNRD1 axis.AbbreviationsEC: esophageal cancer; ESCC: esophageal squamous cell carcinoma; circRNA: circular RNA; WB: western blot; TEM: transmission electron microscopy; NTA: nanoparticle tracking analysis; TXNRD1: thioredoxin reductase 1; IHC: immunohistochemistry; RT-qPCR: reverse transcription-polymerase quantitative chain reaction; GLUT1: glucose transport protein type 1; LDHA: lactate dehydrogenase A.
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Affiliation(s)
- Bo Tang
- Department of Cardio-Thoracic Surgery, Zigong Fourth People's Hospital, Zigong City, China
| | - Qingfeng Zhang
- Department of Cardio-Thoracic Surgery, Zigong Fourth People's Hospital, Zigong City, China
| | - Kui Liu
- Department of Cardio-Thoracic Surgery, Zigong Fourth People's Hospital, Zigong City, China
| | - Yun Huang
- Department of Cardio-Thoracic Surgery, Zigong Fourth People's Hospital, Zigong City, China
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25
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Weidle UH, Sela T, Brinkmann U, Niewoehner J. Circular RNAs With Efficacy in Preclinical In Vitro and In Vivo Models of Esophageal Squamous Cell Carcinoma. Cancer Genomics Proteomics 2022; 19:283-298. [PMID: 35430563 DOI: 10.21873/cgp.20320] [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: 01/27/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 02/06/2023] Open
Abstract
Esophageal cancer is associated with a dismal prognosis. The armamentarium of approved drugs is focused on chemotherapy with modest therapeutic benefit. Recently, checkpoint inhibitory monoclonal antibody Pembrolizumab was approved. In order to identify new targets and modalities for the treatment of esophagus squamous cell carcinoma (ESCC) we searched the literature for circRNAs involved in the pathogenesis of ESCC. We identified two down-regulated and 17 up-regulated circRNAs as well as a synthetic circRNA with efficacy in preclinical in vivo systems. Down-regulated circRNAs sponge microRNAs directed against tumor suppressor genes. Up-regulated circRNAs sponge microRNAs directed against mRNAs, which encode proteins with pro-tumoral functions. We discuss issues such as reconstitution of down-regulated circRNAs and inhibition of up-regulated circRNAs with short interfering RNA (siRNA)- related entities. Also, we address druggability issues of the identified targets.
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Affiliation(s)
- Ulrich H Weidle
- Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich, Penzberg, Germany
| | - Tatjana Sela
- Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich, Penzberg, Germany
| | - Ulrich Brinkmann
- Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich, Penzberg, Germany
| | - Jens Niewoehner
- Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich, Penzberg, Germany
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26
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Li Y, Tian R, Liu J, Ou C, Wu Q, Fu X. A 13-Gene Signature Based on Estrogen Response Pathway for Predicting Survival and Immune Responses of Patients With UCEC. Front Mol Biosci 2022; 9:833910. [PMID: 35558564 PMCID: PMC9087353 DOI: 10.3389/fmolb.2022.833910] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 04/11/2022] [Indexed: 12/11/2022] Open
Abstract
Background: Accumulating evidence suggests that anti-estrogens have been effective against multiple gynecological diseases, especially advanced uterine corpus endometrial carcinoma (UCEC), highlighting the contribution of the estrogen response pathway in UCEC progression. This study aims to identify a reliable prognostic signature for potentially aiding in the comprehensive management of UCEC. Methods: Firstly, univariate Cox and LASSO regression were performed to identify a satisfying UCEC prognostic model quantifying patients’ risk, constructed from estrogen-response-related genes and verified to be effective by Kaplan-Meier curves, ROC curves, univariate and multivariate Cox regression. Additionally, a nomogram was constructed integrating the prognostic model and other clinicopathological parameters. Next, UCEC patients from the TCGA dataset were divided into low- and high-risk groups according to the median risk score. To elucidate differences in biological characteristics between the two risk groups, pathway enrichment, immune landscape, genomic alterations, and therapeutic responses were evaluated to satisfy this objective. As for treatment, effective responses to anti-PD-1 therapy in the low-risk patients and sensitivity to six chemotherapy drugs in the high-risk patients were demonstrated. Results: The low-risk group with a relatively favorable prognosis was marked by increased immune cell infiltration, higher expression levels of HLA members and immune checkpoint biomarkers, higher tumor mutation burden, and lower copy number alterations. This UCEC prognostic signature, composed of 13 estrogen-response-related genes, has been identified and verified as effective. Conclusion: Our study provides molecular signatures for further functional and therapeutic investigations of estrogen-response-related genes in UCEC and represents a potential systemic approach to characterize key factors in UCEC pathogenesis and therapeutic responses.
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Affiliation(s)
- Yimin Li
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ruotong Tian
- Department of Pharmacology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiaxin Liu
- Department of Pathology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Chunlin Ou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Qihui Wu
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
- Department of Obstetrics and Gynecology, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Xiaodan Fu, ; Qihui Wu,
| | - Xiaodan Fu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
- *Correspondence: Xiaodan Fu, ; Qihui Wu,
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27
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Yang G, Zhang Y, Lin H, Liu J, Huang S, Zhong W, Peng C, Du L. CircRNA circ_0023984 promotes the progression of esophageal squamous cell carcinoma via regulating miR-134-5p/cystatin-s axis. Bioengineered 2022; 13:10578-10593. [PMID: 35440286 PMCID: PMC9161969 DOI: 10.1080/21655979.2022.2063562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Recent studies have shown that circRNAs can act as oncogenic factors or tumor suppressors by sponging microRNAs (miRNAs). The upregulation of circ_0023984 was reported in esophageal squamous cell carcinoma (ESCC). However, its functional role in ESCC remain unclear. In the present study, circ_0023984 expression in ESCC cells and tissues were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting (WB). Subcellular fraction experiment was performed to determine relative nuclear-cytoplasmic localization. The loss-of-function effects of circ_0023984 in ESCC cell lines were investigated by shRNA-mediated knockdown. Functional assays including cell Counting Kit-8 (CCK-8), 5-Ethynyl-2’-deoxyuridine (EDU) incorporation, colony formation and Transwell migration assays were conducted to assess the malignant phenotype. The interaction between the two molecules was analyzed by RNA pull-down, luciferase reporter assay and RNA immunoprecipitation (RIP). The subcutaneous tumor model in nude mice was used to assess the role of circ-0023984 in tumorigenesis. We found that ESCC patients with high circ_0023984 expression was associated with a poor prognosis. The knockdown of circ_0023984 suppressed cell growth, invasion, and migration in ESCC cells. Circ_0023984 interacted with miR-134-5p and inhibited its activity, which promoted the expression of CST4 (Cystatin-S). Circ_0023984 also regulated tumorigenesis in a CST4-dependent manner. Together, our study indicates that the oncogenic role of Circ_0023984 is mediated by miR-134-5p/CST4 Axis in ESCC, which could serve as potential targets for future therapeutic strategies.
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Affiliation(s)
- Ge Yang
- Department of Clinical Laboratory, Affiliated Neijiang Second People's Hospital of Southwest Medical University, Neijiang, P.R, China.,Department of Clinical Laboratory, The First Affiliated Hospital of Southwest Medical University, China Neijiang
| | - Yu Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Southwest Medical University, China Neijiang
| | - Hongni Lin
- Scientific research department, Sichuan Neijiang Health Vocational College, China Neijiang
| | - Jinnbo Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Southwest Medical University, China Neijiang
| | - Shengjie Huang
- Scientific research department, Sichuan Neijiang Health Vocational College, China Neijiang
| | - Wei Zhong
- Nuclear medicine department, Affiliated Neijiang Second People's Hospital of Southwest Medical University, Neijiang, P.R, China
| | - Chao Peng
- Department of intestine surgery, Affiliated Neijiang Second People's Hospital of Southwest Medical University, Neijiang, P.R, China
| | - Lin Du
- Scientific research department, Sichuan Neijiang Health Vocational College, China Neijiang
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Fang X, Shrestha SM, Ren L, Shi R. Biological and clinical implications of metastasis-associated circular RNAs in oesophageal squamous cell carcinoma. FEBS Open Bio 2021; 11:2870-2887. [PMID: 34510785 PMCID: PMC8564336 DOI: 10.1002/2211-5463.13297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 08/29/2021] [Accepted: 09/10/2021] [Indexed: 12/20/2022] Open
Abstract
Oesophageal squamous cell carcinoma (OSCC) is a prevalent malignancy with high morbidity and mortality as a result of early metastasis and poor prognosis. Metastasis is a multistep process, involving various signalling pathways. Circular RNAs (circRNAs) are a class of covalently closed noncoding RNAs, the aberrant expression of which is reported to be involved in several biological events, including cell transformation, proliferation, migration, invasion, apoptosis and metastasis. Several studies have reported interactions between circRNAs and metastasis-associated signalling pathways. The abundance, stability and highly specific expression of candidate circRNAs make them potential biomarkers and therapeutic targets in OSCC. In this review article, we comprehensively describe metastasis-related circRNAs and their interactions with epithelial-mesenchymal transition-associated molecules. We also describe the molecular mechanisms and clinical relevance of circRNAs in OSCC progression and metastasis.
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Affiliation(s)
- Xin Fang
- Medical CollegeSoutheast UniversityNanjingChina
| | | | - Li‐Hua Ren
- Medical CollegeSoutheast UniversityNanjingChina
- Department of GastroenterologyZhongda HospitalAffiliated Hospital of Southeast UniversityNanjingChina
| | - Rui‐hua Shi
- Medical CollegeSoutheast UniversityNanjingChina
- Department of GastroenterologyZhongda HospitalAffiliated Hospital of Southeast UniversityNanjingChina
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Wu L, Du Q, Wu C. CircLPAR1/miR-212-3p/ZNF217 feedback loop promotes amyloid β-induced neuronal injury in Alzheimer's Disease. Brain Res 2021; 1770:147622. [PMID: 34403662 DOI: 10.1016/j.brainres.2021.147622] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/01/2021] [Accepted: 08/10/2021] [Indexed: 01/19/2023]
Abstract
BACKGROUND Alzheimer's Disease (AD) is a neurodegenerative disorder characterized by progressive memory loss and cognition and language impairment. CircRNA lysophosphatidic acid receptor 1 (circLPAR1) was found to be increased in AD patients, however, the potential role of circLPAR1 in AD process remains unclear. METHODS Beta-amyloid (Aβ) 25-35-stimulated CHP-212 and IMR-32 cells were used to perform expression and function analyses. The expression of genes and proteins was determined by qRT-PCR and Western blot. Cell proliferation and apoptosis were analyzed using cell counting kit-8 (CCK-8) assay, flow cytometry, and Western blot, respectively. ELISA analysis was used to detect the levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α). The levels of reactive oxygen species (ROS), lactate dehydrogenase (LDH) and superoxide dismutase (SOD) were detected using commercial kits. The direct interactions between miR-212-3p and ZNF217 (Zinc finger protein 217) or circLPAR1 was verified using dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. RESULTS CircLPAR1 was highly expressed in AD patients and Aβ25-35-stimulated CHP-212 and IMR-32 cells. Knockdown of circLPAR1 suppressed Aβ25-35-induced neuronal apoptosis, inflammation, and oxidative stress. Mechanistically, circLPAR1 competitively bound to miR-212-3p to elevate its target ZNF217. Rescue experiments suggested that miR-212-3p inhibition reversed circLPAR1 silencing-evoked inhibition on neuronal injury under Aβ25-35 stimulation. Moreover, miR-212-3p re-expression reduced Aβ25-35-induced neuronal apoptosis, inflammation, and oxidative stress, which were abolished by ZNF217 up-regulation. CONCLUSION CircLPAR1 promotes Aβ25-35-induced apoptosis, inflammation, and oxidative stress via miR-212-3p/ZNF217 axis, suggesting a new insight into the pathogenesis of AD.
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Affiliation(s)
- Lifang Wu
- Department of Laboratory, The Second Hospital of Shanxi Medical University, Taiyuan City, Shanxi Province, China.
| | - Qiang Du
- Department of Orthopedics, Taiyuan People's Hospital, Taiyuan City, Shanxi Province, China
| | - Congcong Wu
- Department of Mathematics and Systems Science, Xinjiang University, Urumqi City, Xinjiang Uygur Autonomous Region, China
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30
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CircAGFG1 acts as a sponge of miR-4306 to stimulate esophageal cancer progression by modulating MAPRE2 expression. Acta Histochem 2021; 123:151776. [PMID: 34461454 DOI: 10.1016/j.acthis.2021.151776] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVE This work aims to determine the role of circular RNA (circRNA) AGFG1 and related molecular mechanism in esophageal squamous cell carcinoma (ESCC) cells. METHODS CircAGFG1 expression in ESCC cell lines was probed with qRT-PCR. ESCC cells were transfected/cotransfected with si-circAGFG1, pcDNA3.1-circAGFG1, si-Microtubule Associated Protein RP/EB Family Member 2 (MAPRE2), pcDNA3.1-circAGFG1 + miR-4306 mimic or pcDNA3.1-circAGFG1 + si-MAPRE2. The interactions between circAGFG1 and miR-4306 as well as miR-4306 and MAPRE2 were confirmed by dual-luciferase reporter assay. Cell proliferation, migration and invasion were detected by CCK-8, cell scratch and Transwell assays, respectively. Relative RNA expression levels of circAGFG1, miR-4306 and MAPRE2 in ESCC cells were measured by qRT-PCR. The protein level of MAPRE2 in ESCC cells was monitored by Western blot. RESULTS CircAGFG1 was observably upregulated in ESCC cell lines. Besides, circAGFG1 silencing hindered ESCC cell development in vitro, and these effects were enhanced by miR-4306 overexpression or MAPRE2 silencing. Mechanistic analysis evidenced that circAGFG1 might act as a competitive endogenous RNA of miR-4306 to relieve the repressive effect of miR-4306 on its target MAPRE2. CONCLUSION CircAGFG1 facilitates ESCC progression via the miR-4306/MAPRE2 axis, and it may act as a possible biomarker for therapy and diagnosis in ESCC treatment.
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He L, Man C, Xiang S, Yao L, Wang X, Fan Y. Circular RNAs' cap-independent translation protein and its roles in carcinomas. Mol Cancer 2021; 20:119. [PMID: 34526007 PMCID: PMC8442428 DOI: 10.1186/s12943-021-01417-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 08/31/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs a kind of covalently closed RNA and widely expressed in eukaryotes. CircRNAs are involved in a variety of physiological and pathological processes, but their regulatory mechanisms are not fully understood. Given the development of the RNA deep-sequencing technology and the improvement of algorithms, some CircRNAs are discovered to encode proteins through the cap-independent mechanism and participate in the important process of tumorigenesis and development. Based on an overview of CircRNAs, this paper summarizes its translation mechanism and research methods, and reviews the research progress of CircRNAs translation in the field of oncology in recent years. Moreover, this paper aims to provide new ideas for tumor diagnosis and treatment through CircRNAs translation.
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Affiliation(s)
- Lian He
- Cancer Institue, Affiliated People's Hospital of Jiangsu University, No 8, Dianli Road, Zhenjiang, Jiangsu Province, 212002, People's Republic of China
| | - Changfeng Man
- Cancer Institue, Affiliated People's Hospital of Jiangsu University, No 8, Dianli Road, Zhenjiang, Jiangsu Province, 212002, People's Republic of China
| | - Shouyan Xiang
- Cancer Institue, Affiliated People's Hospital of Jiangsu University, No 8, Dianli Road, Zhenjiang, Jiangsu Province, 212002, People's Republic of China
| | - Lin Yao
- Cancer Institue, Affiliated People's Hospital of Jiangsu University, No 8, Dianli Road, Zhenjiang, Jiangsu Province, 212002, People's Republic of China
| | - Xiaoyan Wang
- Department of Gastroenterology, Affiliated Suqian First People's Hospital of Nanjing Medical University, No 120, Suzhi Road, Suqian, Jiangsu Province, 223812, People's Republic of China.
| | - Yu Fan
- Cancer Institue, Affiliated People's Hospital of Jiangsu University, No 8, Dianli Road, Zhenjiang, Jiangsu Province, 212002, People's Republic of China.
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Zhou PL, Wu Z, Zhang W, Xu M, Ren J, Zhang Q, Sun Z, Han X. Circular RNA hsa_circ_0000277 sequesters miR-4766-5p to upregulate LAMA1 and promote esophageal carcinoma progression. Cell Death Dis 2021; 12:676. [PMID: 34226522 PMCID: PMC8257720 DOI: 10.1038/s41419-021-03911-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 12/27/2022]
Abstract
Growing evidence has indicated that circular RNAs (circRNAs) play a pivotal role as functional RNAs in diverse cancers. However, most circRNAs involved in esophageal squamous cell carcinoma (ESCC) remain undefined, and the underlying molecular mechanisms mediated by circRNAs are largely unclear. Here, we screened human circRNA expression profiles in ESCC tissues and found significantly increased expression of hsa_circ_0000277 (termed circPDE3B) in ESCC tissues and cell lines compared to the normal controls. Moreover, higher circPDE3B expression in patients with ESCC was correlated with advanced tumor-node-metastasis (TNM) stage and dismal prognosis. Functional experiments demonstrated that circPDE3B promoted the tumorigenesis and metastasis of ESCC cells in vitro and in vivo. Mechanistically, bioinformatics analysis, a dual-luciferase reporter assay, and anti-AGO2 RNA immunoprecipitation showed that circPDE3B could act as a competing endogenous RNA (ceRNA) by harboring miR-4766-5p to eliminate the inhibitory effect on the target gene laminin α1 (LAMA1). In addition, LAMA1 was significantly upregulated in ESCC tissues and was positively associated with the aggressive oncogenic phenotype. More importantly, rescue experiments revealed that the oncogenic role of circPDE3B in ESCC is partly dependent on the miR-4766-5p/LAMA1 axis. Furthermore, bioinformatics analysis combined with validation experiments showed that epithelial-mesenchymal transition (EMT) activation was involved in the oncogenic functions of the circPDE3B-miR-4766-5p/LAMA1 axis in ESCC. Taken together, we demonstrate for the first time that the circPDE3B/miR-4766-5p/LAMA1 axis functions as an oncogenic factor in promoting ESCC cell proliferation, migration, and invasion by inducing EMT, implying its potential prognostic and therapeutic significance in ESCC.
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Affiliation(s)
- Peng Li Zhou
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhengyang Wu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenguang Zhang
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Miao Xu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jianzhuang Ren
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Qinhui Zhang
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhanguo Sun
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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Zhang H, Ju L, Hu P, Ye J, Yang C, Huang J. Circular RNA 0014715 Facilitates Cell Proliferation and Inhibits Apoptosis in Esophageal Squamous Cell Carcinoma. Cancer Manag Res 2021; 13:4735-4749. [PMID: 34163248 PMCID: PMC8214545 DOI: 10.2147/cmar.s314882] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/01/2021] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNAs (circRNAs) have recently been verified to have multiple biological functions and participate in diverse biological processes in different malignant tumors, including esophageal squamous cell carcinoma (ESCC). Nonetheless, the function of circular RNA 0014715 (hsa_circ_0014715, circ_0014715) in ESCC has not been described. Materials and Methods We investigated clinical data from sixty-seven patients undergoing surgery for esophageal cancer. The clinical data were collected. And we analyzed the correlation between the clinical characteristics of these patients and the expression of circ_0014715. Besides, we explored the expression of circ_0014715 in ESCC cell lines. We used cell counting kit-8, colony formation, transwell assay, and flow cytometry to detect changes in cell proliferation, migration, apoptosis, and cell cycle progression. Results We found that circ_0014715 was highly expressed in esophageal squamous cell carcinoma tissues and cell lines. The correlation analysis of clinicopathological features and gene expression revealed that high expression of circ_0014715 was related to nerve invasion, vascular invasion, more advanced tumor-node-metastasis (TNM) stage and poor differentiation grade. Receiver operating characteristic (ROC) curves revealed that circ_0014715 might have diagnostic value for ESCC. Experiments with cultured cells showed that knockdown of circ_0014715 significantly restrained cell proliferation, migration, invasion, wound healing and accelerated cell apoptosis. And cell cycle arrest at G2 phase was observed via flow cytometry. Overexpression of circ_0014715 caused the opposite effects. Collectively, these studies show that circ_0014715 is closely connected with the pathogenesis and development of ESCC. The excess expression of circ_0014715 may have promoting effects on the progression of esophageal cell carcinoma. Conclusion Our finding revealed that circ_0014715 promoted tumor growth and cell proliferation. All of these suggest that targeting circ_0014715 has potential therapeutic value in the treatment of ESCC.
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Affiliation(s)
- Hao Zhang
- Department of Oncology, Taizhou People's Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Linling Ju
- Nantong Institute of Liver Diseases, Nantong Third People's Hospital, Nantong University, Nantong, 226000, Jiangsu, People's Republic of China
| | - Peipei Hu
- Department of Pain Medicine, Nantong Hospital of Traditional Chinese Medicine, Nantong Hospital Affiliated to Nanjing University of Chinese Medicine, Nantong, 226000, Jiangsu, People's Republic of China
| | - Jun Ye
- Institute of Clinical Medicine, Taizhou People's Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Canlin Yang
- Department of Oncology, Taizhou People's Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Junxing Huang
- Department of Oncology, Taizhou People's Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, 225300, Jiangsu, People's Republic of China
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Circ_0001367 inhibits glioma proliferation, migration and invasion by sponging miR-431 and thus regulating NRXN3. Cell Death Dis 2021; 12:536. [PMID: 34035217 PMCID: PMC8149867 DOI: 10.1038/s41419-021-03834-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 11/22/2022]
Abstract
Many studies have reported that circular RNAs play a vital role in the malignant progression of human cancers. However, the role and underlying mechanism of circRNAs in the development of gliomas have not been fully clarified. In this study, we found that circ_0001367 was downregulated in glioma tissues and showed a close correlation with glioma patient survival. Functional assays demonstrated that upregulation of circ_0001367 could suppress the proliferation, migration and invasion of glioma cells in vitro and inhibit glioma growth in vivo. Furthermore, bioinformatics analysis, luciferase reporter assay and RNA immunoprecipitation assay indicated that circ_0001367 can serve as a sponge for miR-431 and that miR-431 acts as an oncogene by regulating neurexin 3 (NRXN3). In addition, rescue experiments verified that circ_0001367 could regulate both the expression and function of NRXN3 in a miR-431-dependent manner. In conclusion, circ_0001367 functions as an suppressor in glioma by targeting the miR-431/NRXN3 axis and may be a promising therapeutic target against gliomas.
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Gao C, Wen Y, Jiang F, Gu X, Zhu X. Circular RNA circ_0008274 upregulates granulin to promote the progression of hepatocellular carcinoma via sponging microRNA -140-3p. Bioengineered 2021; 12:1890-1901. [PMID: 34002672 PMCID: PMC8806606 DOI: 10.1080/21655979.2021.1926195] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Circular RNA (circRNA) features prominently in the progression of hepatocellular carcinoma (HCC), of which the biological function and potential mechanism of circ_0008274 in HCC are obscure. The present study aims to explore circ_ 0008274's biological functions and underlying mechanisms in HCC. The expressions of circ_0008274, miR-140-3p and Granulin (GRN) mRNA in HCC tissues and cells were investigated by quantitative real-time polymerase chain reaction. Besides, GRN protein expression was measured by Western blot. Furthermore, chi-square test was used to probe the interrelation between circ_0008274 expression and clinicopathological parameters. In addition, cell counting kit-8 (CCK-8) and EdU assays were applied to detect cell proliferation. Moreover, transwell assay was used to detect cell migration and invasion. What's more, bioinformatics prediction, dual-luciferase reporter gene assay and RNA Immunoprecipitation experiments were used to corroborate the targeting interrelations among circ_0008274, miR-140-3p and GRN. Herein we reported that circ_0008274 was highly expressed in HCC, and its high expression enhanced the proliferation, migration, and invasion of HCC cells, while depleting circ_0008274 inhibited the malignant biological behaviors of HCC cells. Mechanistically, circ_0008274 upregulates GRN expressions via adsorbing miR-140-3p to expedite the progression of HCC.
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Affiliation(s)
- Chanchan Gao
- Department of Oncology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Yazhou Wen
- Department of Oncology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Feng Jiang
- Department of Oncology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Xuyu Gu
- Department of Oncology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Xinhua Zhu
- Department of General Surgery, Nanjing Drum Tower Hospital, Nanjing, China
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Wang J, Wang Q, Gong Y, Hu Q, Zhang H, Ke S, Chen Y. Knockdown of circRNA circ_0087378 Represses the Tumorigenesis and Progression of Esophageal Squamous Cell Carcinoma Through Modulating the miR-140-3p/E2F3 Axis. Front Oncol 2021; 10:607231. [PMID: 33680929 PMCID: PMC7928419 DOI: 10.3389/fonc.2020.607231] [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: 09/16/2020] [Accepted: 12/16/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND We aimed to investigate the function and underlying mechanisms of circ_0087378 in esophageal squamous cell carcinoma (ESCC). METHODS We verified higher circ_0087378 expression in ESCC tissues by performing qRT-PCR assays. We further confirmed the oncogenic roles of circ_0087378 in ESCC cells through a series of biological function assays. Then, we used an RNA pull-down assay and luciferase reporter assay to identify miR-140-3p that directly interacts with circ_0087378. Subsequent studies were performed to demonstrate that the circ_0087378/miR-140-3p/E2F3 axis promotes ESCC development. RESULTS We demonstrated that upregulated circ_0087378 expression was positively associated with tumor size, histological grade, tumor stage, the presence of metastasis, and worse survival in patients with ESCC. Our results further revealed that knockdown of circ_0087378 suppressed the proliferation, migration, and invasion of ESCC cells and reduced tumor growth in vivo. Mechanistically, we showed that circ_0087378 could directly bind to miR-miR-140-3p and relieve the suppression for target E2F3, which accelerated cell proliferation, migration, and invasion. Correlation analysis in ESCC specimens supported the involvement of the circ_0087378/miR-140-3p/E2F3 axis in ESCC progression. CONCLUSIONS This study demonstrated that circ_0087378 might act as a competing endogenous RNA for miR-140-3p, which could inhibit the tumorigenesis and progression of ESCC through upregulating E2F3 expression.
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Affiliation(s)
- Jing Wang
- Department of Clinical Oncology, Renmin Hospital of Wuhan University, The First Clinical College of Wuhan University, Wuhan, China
| | - Qiushuang Wang
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, The First Clinical College of Wuhan University, Wuhan, China
| | - Yi Gong
- Department of Clinical Oncology, Renmin Hospital of Wuhan University, The First Clinical College of Wuhan University, Wuhan, China
| | - Qiu Hu
- Department of Clinical Oncology, Renmin Hospital of Wuhan University, The First Clinical College of Wuhan University, Wuhan, China
| | - Haoliang Zhang
- Department of Oncology, Tangshan Workers' Hospital, Tangshan, China
| | - Shaobo Ke
- Department of Clinical Oncology, Renmin Hospital of Wuhan University, The First Clinical College of Wuhan University, Wuhan, China
| | - Yongshun Chen
- Department of Clinical Oncology, Renmin Hospital of Wuhan University, The First Clinical College of Wuhan University, Wuhan, China
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Qian C, Yang Y, Lan T, Wang Y, Yao J. Hsa_circ_0043265 Restrains Cell Proliferation, Migration and Invasion of Tongue Squamous Cell Carcinoma via Targeting the miR-1243/SALL1 Axis. Pathol Oncol Res 2021; 27:587130. [PMID: 34257535 PMCID: PMC8262158 DOI: 10.3389/pore.2021.587130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/05/2021] [Indexed: 01/18/2023]
Abstract
Increasing evidence has displayed critical roles of circular RNAs (circRNAs) in tongue squamous cell carcinoma (TSCC). Hsa_circ_0043265 (circ_0043265) has been identified as a tumor suppressor in various tumors. Nevertheless, the critical roles of circ_0043265 in the initiation and progression of TSCC are yet to be fully elucidated. In our study, RNA and protein expressions were detected via qRT-PCR and Western blot. Cell proliferation, migration and invasion were evaluated via CCK-8 and transwell assays. The interactions between circ_0043265, miR-1243 and SALL1 were analyzed via bioinformatics analyses, RNA pull-down and luciferase assays, respectively. The current study demonstrated that circ_0043265 expression was downmodulated in TSCC tissues and cell lines (SCC25, SCC15, SCC9 and Cal27). Functionally, circ_0043265 overexpression led to an attenuation of cell proliferation, migration and invasion of SCC25 and Cal27 cells. Mechanistically, circ_0043265 acted as a competing endogenous RNA (ceRNA) via competitively sponging miR-1243, and restoration of miR-1243 rescued the inhibitory effects of circ_0043265 on cell proliferation, migration and invasion of SCC25 and Cal27 cells. Finally, it was observed that spalt like transcription factor 1 (SALL1), a potential target of miR-1243, was positively modulated via circ_0043265 in SCC25 and Cal27 cells, and SALL1 knockdown reversed the inhibitory effects of circ_0043265 on SCC25 and Cal27 cells. Collectively, the current study demonstrated that circ_0043265 was downmodulated in TSCC and was identified as a ceRNA that restrained the cell proliferation, migration and invasion of SCC25 and Cal27 cells via modulating the miR-1243/SALL1 axis.
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Affiliation(s)
- Cuijuan Qian
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
| | - Yisheng Yang
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
| | - Tianchen Lan
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
| | - Yichao Wang
- Department of Medical Laboratory, Taizhou Central Hospital, Taizhou University Hospital, Taizhou, China
| | - Jun Yao
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
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Ghafouri-Fard S, Bahroudi Z, Shoorei H, Abak A, Ahin M, Taheri M. microRNA-140: A miRNA with diverse roles in human diseases. Biomed Pharmacother 2021; 135:111256. [PMID: 33434855 DOI: 10.1016/j.biopha.2021.111256] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/27/2020] [Accepted: 01/03/2021] [Indexed: 02/07/2023] Open
Abstract
MicroRNA-140 (miR-140) has been shown to be associated with the pathogenesis of a wide range of pathologies including osteoarthritis, osteoporosis, renal fibrosis, ischemic conditions, and most importantly neoplasia. This miRNA has been shown to be down-regulated in a diversity of cancers namely breast cancer, gastrointestinal cancers, lung cancer, and prostate cancer. miR-140 has a lot of immune-related targets. Moreover, several miR-140 targets regulate cell proliferation, cell cycle transition, and apoptosis. This miRNA has been shown to be sponged by a number of lncRNAs and circ-RNAs. miR-140 has essential roles in the determination of the sensitivity of neoplastic cells to chemotherapeutic agents such as temozolomide, doxorubicin, and cisplatin. Besides, expression quantities of miR-140 in cancer tissues can be used for the prediction of clinical outcomes of patients with neoplasia. In the present paper, we describe the impact of miR-140 in neoplastic and non-neoplastic disorders.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Bahroudi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Atefe Abak
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maliheh Ahin
- Taleghani Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Zhang Y, Zhao L, Yang S, Cen Y, Zhu T, Wang L, Xia L, Liu Y, Zou J, Xu J, Li Y, Cheng X, Lu W, Wang X, Xie X. CircCDKN2B-AS1 interacts with IMP3 to stabilize hexokinase 2 mRNA and facilitate cervical squamous cell carcinoma aerobic glycolysis progression. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:281. [PMID: 33308298 PMCID: PMC7731507 DOI: 10.1186/s13046-020-01793-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 12/01/2020] [Indexed: 02/07/2023]
Abstract
Background Circular RNAs (circRNAs) have been reported to play key roles in the development of various cancers. However, the biological functions and clinical significance of most circRNAs are still elusive. The purpose of this study was to explore the function and mechanism of a certain circRNA named circCDKN2B-AS1 in cervical cancer development and its potential value in the clinic. Methods qRT-PCR was used to verify the expression level of circCDKN2B-AS1. CCK-8, Transwell, and flow cytometry (FCM) assays were performed to detect cellular proliferation, migration, and apoptosis, respectively. A Seahorse XFe96 Analyzer was used to measure glycolysis metabolism level. RNA pull-down, RNA immunoprecipitation (RIP), actinomycin-D addition assays and Western blotting were used to screen and elucidate the potential mechanisms involved. BALB/c nude mice and zebrafish embryos (AB, WT) were used as animal models to investigate tumorigenesis capability. 18FDG-microPET/CT imaging and lactic acid (LA) and pyruvic acid (PA) content detection assays were used to detect the level of glucose metabolism in subcutaneous tumors from nude mice. Results CircCDKN2B-AS1, a circular isoform of the long noncoding RNA (lncRNA) CDKN2B-AS1, was upregulated in cervical cancer and precancerous tissues. We found that circCDKN2B-AS1 associated with the IMP3 protein depending on a specific binding site and regulated the stability of Hexokinase 2 (HK2) mRNA, the rate-limiting enzyme of the aerobic glycolysis pathway. The expression level of circCDKN2B-AS1 fated the binding of IMP3 to the 3′ untranslated region (UTR) of HK2 mRNA, consequently affecting the malignant cell phenotype and aerobic glycolysis in cervical cancer in vitro and in vivo. Mutant circCDKN2B-AS1, lacking the IMP3 binding site, did not have such effects. Utilization of an inhibitory peptide to block the interaction between circCDKN2B-AS1 and the IMP3 protein impeded the binding of IMP3 to the 3’UTR of HK2 mRNA and suppressed aerobic glycolysis in cervical cancer cells. Conclusions Our findings demonstrate that circCDKN2B-AS1 facilitates aerobic glycolysis by sponging the IMP3 protein to stabilize HK2 mRNA, consequently promoting the malignant phenotype in cervical cancer, which may provide a potential approach for cervical cancer therapeutics.
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Affiliation(s)
- Yanan Zhang
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Lu Zhao
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Shizhou Yang
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China
| | - Yixuan Cen
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Tingjia Zhu
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Lingfang Wang
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Lili Xia
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Yuwan Liu
- Women's Reproductive Health Laboratory of Zhejiang Province; Women's Hospital; School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Jian Zou
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China
| | - Junfen Xu
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China
| | - Yang Li
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China
| | - Xiaodong Cheng
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China
| | - Weiguo Lu
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China
| | - Xinyu Wang
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China.
| | - Xing Xie
- Department of Gynecologic Oncology; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, No.1 Xueshi Road, Hangzhou, 310006, China.
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Xu Q, Zhou L, Yang G, Meng F, Wan Y, Wang L, Zhang L. CircIL4R facilitates the tumorigenesis and inhibits ferroptosis in hepatocellular carcinoma by regulating the miR-541-3p/GPX4 axis. Cell Biol Int 2020; 44:2344-2356. [PMID: 32808701 DOI: 10.1002/cbin.11444] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 08/05/2020] [Accepted: 08/16/2020] [Indexed: 12/24/2022]
Abstract
Ferroptosis is a specific iron-dependent cell death form that can induce the production of lipid peroxide, but the roles of circular RNAs (circRNAs) in ferroptosis are completely unaware. Circ-interleukin-4 receptor (circIL4R) was reported to express highly in hepatocellular carcinoma (HCC). This study focused on the function of circIL4R dysregulation in tumor progression and ferroptosis of HCC, as well as its molecular mechanism. The quantitative real-time polymerase chain reaction was implemented for measuring RNA expression. Cell proliferation and survival were evaluated using 3-(4,5-dimethylthiazol-2-y1)-2,5-diphenyl tetrazolium bromide. Apoptotic cells were detected via flow cytometry. The quantification of protein expression was executed through western blotting analysis. The target binding was assessed via the dual-luciferase reporter, RNA immunoprecipitation, and RNA pull-down assays. The experiment in vivo was performed using a xenograft model. CircIL4R was abnormally overexpressed in HCC tissues and cells. CircIL4R knockdown impeded oncogenesis and expedited ferroptosis of HCC cells. CircIL4R could directly sponge microRNA-541-3p (miR-541-3p) and miR-541-3p inhibition mitigated the effects of circIL4R knockdown on HCC cells. CircIL4R acted as a miR-541-3p sponge to regulate its target glutathione peroxidase 4 (GPX4). GPX4 upregulation relieved the miR-541-3p-induced tumor inhibition and ferroptosis aggravation. CircIL4R played an oncogenic role in HCC via the miR-541-3p/GPX4 axis in vivo. Our data suggested that circIL4R served for a tumor promoter and ferroptosis inhibitor in HCC by the miR-541-3p/GPX4 network.
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Affiliation(s)
- Qinhong Xu
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lijing Zhou
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ganghua Yang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fandi Meng
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yong Wan
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lin Wang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lei Zhang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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