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Zhang J, Luo Z, Zheng Y, Duan M, Qiu Z, Huang C. CircRNA as an Achilles heel of cancer: characterization, biomarker and therapeutic modalities. J Transl Med 2024; 22:752. [PMID: 39127679 DOI: 10.1186/s12967-024-05562-4] [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: 05/20/2024] [Accepted: 07/31/2024] [Indexed: 08/12/2024] Open
Abstract
Circular RNAs (circRNAs) are a class of endogenous noncoding RNAs characterized by their lack of 5' caps and 3' poly(A) tails. These molecules have garnered substantial attention from the scientific community. A wide range of circRNA types has been found to be expressed in various tissues of the human body, exhibiting unique characteristics such as high abundance, remarkable stability, and tissue-specific expression patterns. These attributes, along with their detectability in liquid biopsy samples such as plasma, position circRNAs an ideal choice as cancer diagnostic and prognostic biomarkers. Additionally, several studies have reported that the functions of circRNAs are associated with tumor proliferation, metastasis, and drug resistance. They achieve this through various mechanisms, including modulation of parental gene expression, regulation of gene transcription, acting as microRNA (miRNA) sponges, and encoding functional proteins. In recent years, a large number of studies have focused on synthesizing circRNAs in vitro and delivering them to tumor tissue to exert its effects in inhibit tumor progression. Herein, we briefly discuss the biogenesis, characteristics, functions, and detection of circRNAs, emphasizing their clinical potential as biomarkers for cancer diagnosis and prognosis. We also provide an overview the recent techniques for synthesizing circRNAs and delivery strategies, and outline the application of engineered circRNAs in clinical cancer therapy.
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Affiliation(s)
- Jun Zhang
- Department of Gastrointestinal Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China
| | - Zai Luo
- Department of Gastrointestinal Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China.
| | - Yang Zheng
- Department of Gastrointestinal Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China
| | - Mingyu Duan
- Department of Education, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Zhengjun Qiu
- Department of Gastrointestinal Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China
| | - Chen Huang
- Department of Gastrointestinal Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou District, Shanghai, 200080, China.
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Yan C, Dou Y, Xia R, Liu S, Fu J, Li D, Wang R, Tie F, Li L, Jin H, An F. Research progress on the role of lncRNA, circular RNA, and microRNA networks in regulating ferroptosis in osteosarcoma. Biomed Pharmacother 2024; 176:116924. [PMID: 38876052 DOI: 10.1016/j.biopha.2024.116924] [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: 03/29/2024] [Revised: 06/07/2024] [Accepted: 06/09/2024] [Indexed: 06/16/2024] Open
Abstract
Noncoding RNAs (ncRNAs) do not participate in protein-coding. Ferroptosis is a newly discovered form of cell death mediated by reactive oxygen species and lipid peroxidation. Recent studies have shown that ncRNAs such as microRNAs, long noncoding RNAs, circular RNAs, and ferroptosis are involved in the occurrence and development of osteosarcoma (OS). Studies have confirmed that ncRNAs participate in the development of OS by regulating the ferroptosis. However, systematic summary on this topic are still lacking. This review summarises the potential role of ncRNAs in the diagnosis, treatment, drug resistance, and prognosis of OS and the basis for diagnosing, preventing, and treating clinical OS and developing effective drugs. This review summarises the latest research progress on ncRNAs that regulate ferroptosis in OS, attempts to clarify the molecular mechanisms by which ncRNAs regulate ferroptosis in the pathogenesis of OS, and elaborates on the involvement of ferroptosis in OS from the perspective of ncRNAs.
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Affiliation(s)
- Chunlu Yan
- School of Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Yinnan Dou
- The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Ruoliu Xia
- The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Shiqing Liu
- The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Jianchao Fu
- The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Duo Li
- The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Rong Wang
- School of Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Feng Tie
- School of Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Linxin Li
- School of Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
| | - Hua Jin
- Clinical College of Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China.
| | - Fangyu An
- Teaching Experiment Training Center, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China.
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de Lima FA, Fernandes FL, de Almeida DRQ, Carvalho AE, Almeida VD, Cavalcante GA, de Morais NM, Rodrigues TD, do Nascimento EGC, de Oliveira IT, Bezerra CM, Fernandes JV, de Medeiros Fernandes TAA. Alteration in the Expression of Circular Rnas and its association with the Development and Progression of Osteosarcoma, an Integrative Review with High Sensitivity Research. Asian Pac J Cancer Prev 2024; 25:1195-1203. [PMID: 38679978 PMCID: PMC11162731 DOI: 10.31557/apjcp.2024.25.4.1195] [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: 06/23/2023] [Accepted: 01/22/2024] [Indexed: 05/01/2024] Open
Abstract
BACKGROUND Osteosarcoma is the most common primary malignant bone tumor, mainly affecting children, young adults, and the elderly. It is an aggressive cancer with a poor prognosis, exhibiting low survival rates even with standard treatment. Recently, circular RNA molecules capable of influencing gene expression through various functions, with their main role being acting as microRNA sponges and reducing their intracellular expression, have been identified. Recent studies have linked circular RNAs to osteosarcoma development and progression. Therefore, the present study aimed to investigate the alteration in circular RNA expression during osteosarcoma development and progression. METHODS An integrative literature review was conducted from September 10th to November 12th, 2021, using the following databases: PubMed/MEDLINE, SCOPUS, Web of Science, OVID, and EMBASE. 129 full articles were included in the review. The obtained data were organized using a standardized data collection instrument, which included the following information: altered expression profile of circular RNAs, associated cancer hallmarks, clinical-pathological relationships of circular RNAs, and perspectives on the studied circular RNAs. RESULTS A total of 94 distinct circular RNAs were identified, predominantly showing an increased expression pattern. Approximately 91% of the studies that aimed to identify the mechanisms of action of circular RNAs highlighted the function of circular RNAs as microRNA sponges. The most associated cancer hallmarks with the identified circular RNAs were proliferative signaling induction, invasion and metastasis, and resistance to cell death. The altered expression of these circular RNAs generally correlated with a worse prognosis for patients, as evidenced by clinical features such as shorter survival, advanced Enneking and/or TNM stage, higher incidence of metastasis, larger tumor size, and increased chemoresistance. CONSLUSION These findings indicate the significance of circular RNA molecules in osteosarcoma carcinogenesis, suggesting their potential as new prognostic and/or diagnostic biomarkers, as well as alternative therapeutic targets in the fight against osteosarcoma.
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Affiliation(s)
- Felipe Alves de Lima
- Department of Biomedical Sciences, Rio Grande do Norte State University, Mossoró, Brazil.
| | | | | | | | - Valeria Duarte Almeida
- Department of Biomedical Sciences, Rio Grande do Norte State University, Mossoró, Brazil.
| | | | - Nickson Melo de Morais
- Department of Biomedical Sciences, Rio Grande do Norte State University, Mossoró, Brazil.
| | | | | | | | | | - Jose Verissimo Fernandes
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Brazil.
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Wang Z, She D, Liu L, Hua X, Zhu H, Yu L, Wang H, Zhu Y, Fan G, Wang Y, Xu M, Zhou G. Circular RNA CircSATB2 facilitates osteosarcoma progression through regulating the miR-661/FUS-mediated mRNA of ZNFX1. Cell Signal 2024; 114:110977. [PMID: 37984605 DOI: 10.1016/j.cellsig.2023.110977] [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: 07/13/2023] [Revised: 11/03/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
Circular RNAs (circRNAs) are a class of non-coding RNAs which take part in the regulation of the initiation and development of different types of cancer. Numerous studies have demonstrated that circRNAs are involved in the progression of osteosarcoma (OS) as well. Thus, we put our emphasis on the exploration of crucial circRNAs in the process of OS initiation and progression. Using RNA sequencing, we found that circSATB2 was highly expressed in OS tissues compared with adjacent normal tissues. Then, we confirmed the high expression of circSATB2 in OS cell lines and OS tissues and its high expression was related to poor prognosis of OS patients. Functional experiments exhibited that circSATB2 promoted OS proliferation and migration in vitro, primary OS model and OS lung metastasis model showed that circSATB2 aggravated OS progression in vivo. Mechanistically, circSATB2 was found to promote OS progression through sponging miR-661 and FUS regulating the mRNA of ZNFX1. Therefore, circSATB2 could act as a prognostic marker and a therapeutic target for osteosarcoma in the future.
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Affiliation(s)
- Zhen Wang
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China; Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China; Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Diankun She
- Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Lei Liu
- Department of Orthopedics,The Affiliated Yixing Hospital of Jiangsu University, Yixing, Jiangsu, China
| | - Xianming Hua
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Hao Zhu
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Lingfeng Yu
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Han Wang
- Department of Pharmacy, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yan Zhu
- Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Gentao Fan
- Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Yicun Wang
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Meng Xu
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing, China.
| | - Guangxin Zhou
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China; Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China.
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Chen W, Xu J, Wu Y, Liang B, Yan M, Sun C, Wang D, Hu X, Liu L, Hu W, Shao Y, Xing D. The potential role and mechanism of circRNA/miRNA axis in cholesterol synthesis. Int J Biol Sci 2023; 19:2879-2896. [PMID: 37324939 PMCID: PMC10266072 DOI: 10.7150/ijbs.84994] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023] Open
Abstract
Cholesterol levels are an initiating risk factor for atherosclerosis. Many genes play a central role in cholesterol synthesis, including HMGCR, SQLE, HMGCS1, FDFT1, LSS, MVK, PMK, MVD, FDPS, CYP51, TM7SF2, LBR, MSMO1, NSDHL, HSD17B7, DHCR24, EBP, SC5D, DHCR7, IDI1/2. Especially, HMGCR, SQLE, FDFT1, LSS, FDPS, CYP51, and EBP are promising therapeutic targets for drug development due to many drugs have been approved and entered into clinical research by targeting these genes. However, new targets and drugs still need to be discovered. Interestingly, many small nucleic acid drugs and vaccines were approved for the market, including Inclisiran, Patisiran, Inotersen, Givosiran, Lumasiran, Nusinersen, Volanesorsen, Eteplirsen, Golodirsen, Viltolarsen, Casimersen, Elasomeran, Tozinameran. However, these agents are all linear RNA agents. Circular RNAs (circRNAs) may have longer half-lives, higher stability, lower immunogenicity, lower production costs, and higher delivery efficiency than these agents due to their covalently closed structures. CircRNA agents are developed by several companies, including Orna Therapeutics, Laronde, and CirCode, Therorna. Many studies have shown that circRNAs regulate cholesterol synthesis by regulating HMGCR, SQLE, HMGCS1, ACS, YWHAG, PTEN, DHCR24, SREBP-2, and PMK expression. MiRNAs are essential for circRNA-mediated cholesterol biosynthesis. Notable, the phase II trial for inhibiting miR-122 with nucleic acid drugs has been completed. Suppressing HMGCR, SQLE, and miR-122 with circRNA_ABCA1, circ-PRKCH, circEZH2, circRNA-SCAP, and circFOXO3 are the promising therapeutic target for drug development, specifically the circFOXO3. This review focuses on the role and mechanism of the circRNA/miRNA axis in cholesterol synthesis in the hope of providing knowledge to identify new targets.
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Affiliation(s)
- Wujun Chen
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
| | - Jiazhen Xu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
| | - Yudong Wu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
| | - Bing Liang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
| | - Mingzhe Yan
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
| | - Chuandong Sun
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
- Department of Liver Disease Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China
| | - Dong Wang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
- Department of Liver Disease Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China
| | - Xiaokun Hu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
- Interventional Medicine Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China
| | - Li Liu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
- Department of Community Health Promotion, Qingdao Municipal Center for Disease Control & Prevention, Qingdao Institute of Preventive Medicine, Qingdao, Shandong, 266033, China
| | - Wenchao Hu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
- Department of Endocrinology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, 266000, China
| | - Yingchun Shao
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
| | - Dongming Xing
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266000, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
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Zhu YR, Zhu KP, Hu JP, Tan S, Zhang CL. Combination of hsa_circ_0004674 and lncRNA OIP5‑AS1 as a novel clinical biomarker used to predict prognosis in patients with osteosarcoma. Exp Ther Med 2023; 25:208. [PMID: 37090082 PMCID: PMC10119984 DOI: 10.3892/etm.2023.11907] [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: 07/20/2022] [Accepted: 01/18/2023] [Indexed: 04/25/2023] Open
Abstract
Osteosarcoma is a malignant tumor that predominantly occurs in children or adolescents under the age of 20 years old. Metastasis and chemotherapy resistance are two problems in the treatment of osteosarcoma, and the lack of definite biomarkers impairs the course of treatment. In recent years, non-coding RNA, as a biomarker of osteosarcoma, has become an area of research focus. The role of long non-coding RNAs (lncRNAs), such as lncRNA OIP5-AS1, and circular RNAs, such as hsa_circ_0004674, in osteosarcoma have previously been revealed, and the present study investigated their clinical significance. A total of 20 samples were collected from patients with osteosarcoma. The expression levels of lncRNA OIP5-AS1 and hsa_circ_0004674 were analyzed in tumor tissues and patient serum, and their associations with chemotherapy sensitivity, lung metastasis and prognosis were assessed. The results revealed that these two non-coding RNAs were significantly upregulated in the osteosarcoma tissues of patients compared with those in the adjacent tumor tissues. In addition, the expression levels of the two non-coding RNAs were increased in the serum of patients with osteosarcoma compared with those in patients with bone fractures (P<0.01). In patients with lung metastasis or chemotherapy resistance (tumor necrosis rate <90%), the expression levels of the two non-coding RNAs were similarly increased. By plotting the receiver operating characteristic curve, it was revealed that the combination of hsa_circ_0004674 and lncRNA OIP5-AS1 was better than ALP or either non-coding RNA alone in predicting chemotherapy sensitivity and metastasis. Kaplan-Meier survival analysis showed that, in patients with osteosarcoma, higher expression of both non-coding RNAs was associated with worse survival time (log-rank test P=0.006). In conclusion, the combination of hsa_circ_0004674 and lncRNA OIP5-AS1 may be used as a better biomarker than traditional biomarkers, such as ALP, in a clinical setting.
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Affiliation(s)
- Yu-Run Zhu
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P.R. China
- Institute of Bone Tumors Affiliated to Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Kun-Peng Zhu
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P.R. China
- Institute of Bone Tumors Affiliated to Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Jian-Ping Hu
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P.R. China
- Institute of Bone Tumors Affiliated to Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Shuo Tan
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P.R. China
- Institute of Bone Tumors Affiliated to Tongji University, School of Medicine, Shanghai 200072, P.R. China
- Correspondence to: Dr Chun-Lin Zhang or Dr Shuo Tan, Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 301 Yan-chang Middle Road, Shanghai 200072, P.R. China
| | - Chun-Lin Zhang
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P.R. China
- Institute of Bone Tumors Affiliated to Tongji University, School of Medicine, Shanghai 200072, P.R. China
- Correspondence to: Dr Chun-Lin Zhang or Dr Shuo Tan, Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 301 Yan-chang Middle Road, Shanghai 200072, P.R. China
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Wang D, Liu F, Li B, Xu J, Gong H, Yang M, Wan W, Jiao J, Liu Y, Xiao J. Development and Validation of a Prognostic Model for Overall Survival in Patients with Primary Pelvis and Spine Osteosarcoma: A Population-Based Study and External Validation. J Clin Med 2023; 12:jcm12072521. [PMID: 37048606 PMCID: PMC10095419 DOI: 10.3390/jcm12072521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/24/2023] [Accepted: 03/01/2023] [Indexed: 03/29/2023] Open
Abstract
Background: Primary pelvis and spine osteosarcoma (PSOS) is a specific type of osteosarcoma that is difficult to treat and has a poor prognosis. In recent years, the research on osteosarcoma has been increasing, but there have been few studies on PSOS; in particular, there have been a lack of analyses with a large sample size. This study aimed to construct and validate a model to predict the overall survival (OS) of PSOS patients, as currently there are no tools available for assessing their prognosis. Methods: Data including demographic information, clinical characteristics, and follow-up information on patients with PSOS were collected from the Surveillance, Epidemiology, and End Results (SEER) database, as well as from the Spine Tumor Center of Changzheng Hospital. Variable selection was achieved through a backward procedure based on the Akaike Information Criterion (AIC). Prognostic factors were identified by univariate and multivariate Cox analysis. A nomogram was further constructed for the estimation of 1-, 3-, and 5-year OS. Calibration plots, the concordance index (C-index), and the receiver operating characteristic (ROC) were used to evaluate the prediction model. Results: In total, 83 PSOS patients and 90 PSOS patients were separately collected from the SEER database and Changzheng Hospital. In the SEER cohort, liver metastasis, lung metastasis, and chemotherapy were recognized as independent prognostic factors for OS (p < 0.05) and were incorporated to construct the initial nomogram. However, the initial nomogram showed poor predictive accuracy in internal and external validation. Then, we shifted our focus to the Changzheng data. Lung metastasis involving segments, Eastern Cooperative Oncology Group (ECOG) performance score, alkaline phosphatase (ALP) level, and en bloc resection were ultimately identified as independent prognostic factors for OS (p < 0.05) and were further incorporated to construct the current nomogram, of which the bias-corrected C-index was 0.834 (0.824–0.856). The areas under the ROC curves (AUCs) of the current nomogram regarding 1-, 3-, and 5-year OS probabilities were 0.93, 0.96, and 0.92, respectively. Conclusion: We have developed a predictive model with satisfactory performance and clinical practicability, enabling effective prediction of the OS of PSOS patients and aiding clinicians in decision-making.
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Affiliation(s)
- Da Wang
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
| | - Fanrong Liu
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Binbin Li
- Department of Pathology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
| | - Jinhui Xu
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
| | - Haiyi Gong
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
| | - Minglei Yang
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
| | - Wei Wan
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
| | - Jian Jiao
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
- Correspondence: (J.J.); (Y.L.); (J.X.)
| | - Yujie Liu
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
- Correspondence: (J.J.); (Y.L.); (J.X.)
| | - Jianru Xiao
- Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Navy Military Medical University, Shanghai 200003, China
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
- Correspondence: (J.J.); (Y.L.); (J.X.)
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Chellini L, Palombo R, Riccioni V, Paronetto MP. Oncogenic Dysregulation of Circulating Noncoding RNAs: Novel Challenges and Opportunities in Sarcoma Diagnosis and Treatment. Cancers (Basel) 2022; 14:cancers14194677. [PMID: 36230599 PMCID: PMC9562196 DOI: 10.3390/cancers14194677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/07/2022] [Accepted: 09/17/2022] [Indexed: 12/03/2022] Open
Abstract
Simple Summary Body fluids contain different classes of RNA molecules such as protein-coding messenger RNAs (mRNA) and noncoding RNAs, including microRNAs (miRNAs), long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs). These circulating RNAs can travel naked or packed into extracellular vesicles and display valuable potential as non-invasive biomarkers of sarcoma malignancy. In this review, we summarize current knowledge on the possible functions of these circulating RNAs and discuss their possible exploitation as novel markers to improve sarcoma diagnosis and prognosis. Despite the recent advance in technological tools have improved protocols for the extraction and detection of circulating RNA, many aspects related to the biology of these molecules remain to be elucidated. In particular, the lack of standardization in the assessment of these markers makes difficult their adoption into clinical practice. Abstract Sarcomas comprise a heterogeneous group of rare mesenchymal malignancies. Sarcomas can be grouped into two categories characterized by different prognosis and treatment approaches: soft tissue sarcoma and primary bone sarcoma. In the last years, research on novel diagnostic, prognostic or predictive biomarkers in sarcoma management has been focused on circulating tumor-derived molecules as valuable tools. Liquid biopsies that measure various tumor components, including circulating cell-free DNA and RNA, circulating tumor cells, tumor extracellular vesicles and exosomes, are gaining attention as methods for molecular screening and early diagnosis. Compared with traditional tissue biopsies, liquid biopsies are minimally invasive and blood samples can be collected serially over time to monitor cancer progression. This review will focus on circulating noncoding RNA molecules from liquid biopsies that are dysregulated in sarcoma malignancies and discuss advantages and current limitations of their employment as biomarkers in the management of sarcomas. It will also explore their utility in the evaluation of the clinical response to treatments and of disease relapse. Moreover, it will explore state-of-the-art techniques that allow for the early detection of these circulating biomarkers. Despite the huge potential, current reports highlight poor sensitivity, specificity, and survival benefit of these methods, that are therefore still insufficient for routine screening purposes.
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Affiliation(s)
- Lidia Chellini
- Laboratory of Molecular and Cellular Neurobiology, IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
| | - Ramona Palombo
- Laboratory of Molecular and Cellular Neurobiology, IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
- Department of Movement, Human and Health Sciences, Università degli Studi di Roma “Foro Italico”, Piazza Lauro de Bosis, 15, 00135 Rome, Italy
| | - Veronica Riccioni
- Laboratory of Molecular and Cellular Neurobiology, IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
| | - Maria Paola Paronetto
- Laboratory of Molecular and Cellular Neurobiology, IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
- Department of Movement, Human and Health Sciences, Università degli Studi di Roma “Foro Italico”, Piazza Lauro de Bosis, 15, 00135 Rome, Italy
- Correspondence:
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Yang J, Liu Z, Liu B, Sun L. Silencing of circCYP51A1 represses cell progression and glycolysis by regulating miR-490-3p/KLF12 axis in osteosarcoma under hypoxia. J Bone Oncol 2022; 37:100455. [PMID: 36276300 PMCID: PMC9579499 DOI: 10.1016/j.jbo.2022.100455] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 08/30/2022] [Accepted: 09/27/2022] [Indexed: 11/02/2022] Open
Abstract
CircCYP51A1 was up-regulated in osteosarcoma cells under hypoxia. CircCYP51A1 mediated KLF12 expression through sponging miR-490-3p. Under hypoxia condition, circCYP51A1 knockdown inhibited cell progression and glycolysis by regulating miR-490-3p/ KLF12 axis.
Background Methods Results Conclusion
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Li T, Xing G, Lu L, Kong X, Guo J. CircAGFG1 Promotes Osteosarcoma Progression and Stemness by Competing with miR-302a-3p to Upregulate the Expression of LATS2. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:6370766. [PMID: 35958928 PMCID: PMC9357677 DOI: 10.1155/2022/6370766] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/10/2022] [Accepted: 04/12/2022] [Indexed: 11/17/2022]
Abstract
This study aimed to investigate the effect of circRNA (circAGFG1) on the proliferation, migration, invasion, and cell stemness of osteosarcoma cells by targeting miR-302a to regulate LATS2. The expression of circAGFG1 in osteosarcoma cells and normal osteoblasts was detected by real-time fluorescent quantitative PCR (RT-qPCR). Cell proliferation, clone formation, and invasion were detected by CCK-8, clone formation, and cell invasion assays. In vivo tumor formation assay was used to detect the effect of circAGFG1 on tumor growth. The expression level of circAGFG1 was upregulated in osteosarcoma cells. The downregulation of circAGFG1 inhibited the proliferation, invasion, and migration of osteosarcoma cells. The overexpression of circAGFG1 enhanced the stemness of osteosarcoma cells. CircAGFG1 was specifically bound to miR-302a to regulate the expression activity of miR-302a. MiR-302a specifically bound to the 3'UTR of LATS2 and inhibited the expression of LATS2. The overexpression of miR-302a reversed the effect of circAGFG1 on the proliferation, invasion, and migration of osteosarcoma cells. CircAGFG1 regulated the expression of LATS2 by miR-302a, thereby regulating the proliferation, migration, and invasion of osteosarcoma cells.
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Affiliation(s)
- Tongchun Li
- Department of Orthopedics, Changle County People's Hospital, Weifang 262400, Shandong, China
| | - Guangjie Xing
- Department of Orthopedics, Changle County People's Hospital, Weifang 262400, Shandong, China
| | - Liangliang Lu
- Department of Oncology, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, Shandong, China
| | - Xiangzhen Kong
- Department of Oncology, Sishui County People's Hospital, Jining 273299, Shandong, China
| | - Jinwei Guo
- Department of Orthopedics, Chongqing University Jiangjin Hospital, Chongqing 402260, China
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Zhang H, Zhou Q, Shen W. Circ-FOXM1 promotes the proliferation, migration and EMT process of osteosarcoma cells through FOXM1-mediated Wnt pathway activation. J Orthop Surg Res 2022; 17:344. [PMID: 35799265 PMCID: PMC9261067 DOI: 10.1186/s13018-022-03207-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 06/08/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Osteosarcoma (OS) is a malignant bone tumor that commonly occurs in adolescents with a high mortality rate and frequent pulmonary metastasis. Emerging evidence has suggested that circular RNAs (circRNAs) are important regulators in multiple biological activities of carcinomas. Nevertheless, the role of circRNAs derived from forkhead box M1 (FOXM1), a well-accepted modulator of OS progression, has not been discussed in OS. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was utilized to test circ-FOXM1 (hsa_circ_0025033) expression in OS cell lines. Cell counting kit-8 (CCK-8), 5-ethynyl-2'-deoxyuridine (EdU), terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), transwell assays and western blot analysis of epithelial-mesenchymal transition (EMT) markers were conducted to evaluate cell proliferation, apoptosis, migration, and EMT process. Luciferase reporter assay and RNA-binding protein immunoprecipitation (RIP) assay were utilized to detect the interaction of circ-FOXM1 and RNAs. RESULTS High expression of circ-FOXM1 was detected in OS cell lines. Functionally, circ-FOXM1 knockdown inhibited the proliferation, migration and EMT process, whereas induced the apoptosis of OS cells. From the aspect of molecular mechanism, circ-FOXM1 was discovered to upregulate FOXM1 expression via sponging miR-320a and miR-320b, therefore activating Wnt signaling pathway. Besides, rescue experiments elucidated that circ-FOXM1 regulated cellular activities of OS cells via FOXM1. Further, in vivo assays supported that loss of circ-FOXM1 restrained OS tumor growth. CONCLUSION Circ-FOXM1 facilitated the malignant phenotypes of OS cells through FOXM1-mediated Wnt pathway activation, revealing circ-FOXM1 as a potential biomarker for OS treatment.
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Affiliation(s)
- Hao Zhang
- Department of Burn and Plastic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, Jiangsu, China
| | - Qiongqiong Zhou
- Department of Otolaryngology, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China
| | - Weimin Shen
- Department of Burn and Plastic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, Jiangsu, China.
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Yu Y, Dong G, Li Z, Zheng Y, Shi Z, Wang G. circ‑LRP6 contributes to osteosarcoma progression by regulating the miR‑141‑3p/HDAC4/HMGB1 axis. Int J Oncol 2022; 60:38. [PMID: 35211755 PMCID: PMC8878724 DOI: 10.3892/ijo.2022.5328] [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: 05/07/2021] [Accepted: 01/19/2022] [Indexed: 12/04/2022] Open
Abstract
Circular RNA-lipoprotein receptor 6 (circ-LRP6) serves a role in promoting the tumorigenesis of retinoblastoma, esophageal squamous cell cancer and oral squamous cell carcinoma; however, whether circ-LRP6 demonstrates the same effect in osteosarcoma (OS) is yet to be fully elucidated. The present study aimed to analyze the expression, role and potential molecular mechanism of circ-LRP6 in OS. The expression levels of circ-LRP6, microRNA (miR)-141-3p, histone deacetylase 4 (HDAC4) and high mobility group protein 1 (HMGB1) were evaluated by reverse transcription- quantitative PCR in OS tissues and cell lines. Cell Counting Kit-8, Transwell and Matrigel assays were conducted to evaluate cell proliferation, migration and invasion, respectively. Western blotting was also performed to determine HDAC4 and HMGB1 protein expression levels. Bioinformatics and dual-luciferase reporter assays were used to predict and analyze the interactions between circ-LRP6 and miR-141-3p, miR-141-3p and HDAC4, as well as between miR-141-3p and HMGB1. Additionally, RNA immunoprecipitation was performed to verify the association between circ-LRP6 and miR-141-3p. The results confirmed that circ-LRP6 was highly expressed in OS tissues and cell lines. In addition, circ-LRP6 negatively regulated the expression of miR-141-3p and, in turn, miR-141-3p negatively regulated HDAC4 and HMGB1 expression. Functional assays revealed that circ-LRP6 knockdown inhibited the proliferation, migration and invasion of OS cells, whereas the inhibition of miR-141-3p or the overexpression of either HDAC4 or HMGB1 partly reversed the inhibitory effect of circ-LRP6 knockdown. In summary, the present study determined that circ-LRP6 knockdown inhibited the proliferation, migration and invasion of OS cells by regulating the miR-141-3p/HDAC4/HMGB1 axis.
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Affiliation(s)
- Yali Yu
- Department of Laboratory, Zhengzhou Orthopedic Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Guixiang Dong
- Department of Laboratory, Zhengzhou Orthopedic Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Zijun Li
- Department of Laboratory, Zhengzhou Orthopedic Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Yan Zheng
- Department of Laboratory, Zhengzhou Orthopedic Hospital, Zhengzhou, Henan 450052, P.R. China
| | - Zhisong Shi
- Department of Orthopedic Surgery, Zhumadian Central Hospital, Zhumadian, Henan 463000, P.R. China
| | - Guanghui Wang
- Department of Orthopedic Surgery, Zhumadian Central Hospital, Zhumadian, Henan 463000, P.R. China
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Plasma circN4BP2L2 is a promising novel diagnostic biomarker for epithelial ovarian cancer. BMC Cancer 2022; 22:6. [PMID: 34980005 PMCID: PMC8721970 DOI: 10.1186/s12885-021-09073-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/17/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) are more stable than linear RNA molecules, which makes them promising diagnostic biomarkers for diseases. By circRNA-sequencing analysis, we previously found that circN4BP2L2 was significantly decreased in epithelial ovarian cancer (EOC) tissues, and was predictive of disease progression. The aim of this study was to evaluate the diagnostic value of plasma circN4BP2L2 in EOC. METHODS Three hundred seventy-eight plasma samples were acquired prior to surgery. Samples were obtained from 126 EOC patients, 126 benign ovarian cyst patients, and 126 healthy volunteers. CircN4BP2L2 was assessed using reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Cancer antigen 125 (CA125) and human epididymis protein 4 (HE4) were assessed using enzyme-linked immunosorbent assay (ELISA). EOC cells were transfected with small interference RNAs (siRNAs) and cell proliferation, migration, invasion, cell cycle and cell apoptosis were performed to assess the effect of circN4BP2L2 in EOC. Receiver operating curve (ROC), the area under the curve (AUC), sensitivity and specificity were estimated. RESULTS Plasma circN4BP2L2 was significantly downregulated in EOC patients. Decreased circN4BP2L2 was significantly associated with advanced tumor stage, worse histological grade, lymph node metastasis and distant metastasis in EOC. CircN4BP2L2 inhibited tumor cell migration and invasion in vitro. CircN4BP2L2 could significantly separate EOC from benign (AUC = 0.82, P < 0.01) or normal (AUC = 0.90, P < 0.01) cohort. Early stage EOC vs benign (AUC = 0.81, P < 0.01) or normal (AUC = 0.90, P < 0.01) cohort could also be distinguished by circN4BP2L2. In discrimination between EOC cohort and benign or normal cohort, circN4BP2L2 performed equally well in both pre- and post-menopausal women. The combination of circN4BP2L2, CA125 and HE4 showed high sensitivity and specificity in detecting EOC cases. CONCLUSIONS Plasma circN4BP2L2 is significantly downregulated in EOC and might serve as a promising novel diagnostic biomarker for EOC patients, especially in early stage EOC cases. CircN4BP2L2 might act as an adjunct to CA125 and HE4 in detecting EOC. Further large-scale studies are warranted to verify our results.
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Yang Q, Liu J, Wu B, Wang X, Jiang Y, Zhu D. Role of extracellular vesicles in osteosarcoma. Int J Med Sci 2022; 19:1216-1226. [PMID: 35928720 PMCID: PMC9346389 DOI: 10.7150/ijms.74137] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/21/2022] [Indexed: 11/17/2022] Open
Abstract
Osteosarcoma is a malignant bone tumor characterized by the direct production of osteoid tissue from tumor cells. Extracellular vesicles are membranous vesicles released by cells into the extracellular matrix, which exist widely in various body fluids and cell supernatants, and stably carry some important signaling molecules. They are involved in cell communication, cell migration, angiogenesis and tumor cell growth. Increasing evidence has shown that extracellular vesicles play a significant role in osteosarcoma development, progression, and metastatic process, indicating that extracellular vesicles can be use as biomarker vehicles in the diagnosis and prognosis of osteosarcoma. This review discusses the basic biological characteristics of extracellular vesicles and focuses on their application in osteosarcoma.
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Affiliation(s)
- Qifan Yang
- Department of Orthopaedics, the First Hospital of Jilin University, Changchun, Street Xinmin 71, China
| | - Jing Liu
- The first clinical medical college of Bin Zhou Medical College, Street Huanghe 661, China
| | - Bo Wu
- Department of Orthopaedics, the First Hospital of Jilin University, Changchun, Street Xinmin 71, China
| | - Xinyu Wang
- Department of Orthopaedics, the First Hospital of Jilin University, Changchun, Street Xinmin 71, China
| | - Ye Jiang
- Department of Orthopaedics, the First Hospital of Jilin University, Changchun, Street Xinmin 71, China
| | - Dong Zhu
- Department of Orthopaedics, the First Hospital of Jilin University, Changchun, Street Xinmin 71, China
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Lakiotaki E, Kanakoglou DS, Pampalou A, Karatrasoglou EA, Piperi C, Korkolopoulou P. Dissecting the Role of Circular RNAs in Sarcomas with Emphasis on Osteosarcomas. Biomedicines 2021; 9:1642. [PMID: 34829872 PMCID: PMC8615931 DOI: 10.3390/biomedicines9111642] [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] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/04/2021] [Accepted: 11/06/2021] [Indexed: 12/20/2022] Open
Abstract
Circular RNAs (circRNAs) are single-stranded RNAs generated from exons back-splicing from a single pre-mRNA, forming covalently closed loop structures which lack 5'-3'-polarity or polyadenylated tail. Ongoing research depicts that circRNAs play a pivotal role in tumorigenesis, tumor progression, metastatic potential and chemoresistance by regulating transcription, microRNA (miRNA) sponging, RNA-binding protein interactions, alternative splicing and to a lesser degree, protein coding. Sarcomas are rare malignant tumors stemming from mesenchymal cells. Due to their clinically insidious onset, they often present at advanced stage and their treatment may require aggressive chemotherapeutic or surgical options. This review is mainly focused on the regulatory functions of circRNAs on osteosarcoma progression and their potential role as biomarkers, an area which has prompted lately extensive research. The attributed oncogenic role of circRNAs on other mesenchymal tumors such as Kaposi Sarcoma (KS), Rhabdomyosarcoma (RMS) or Gastrointestinal Stromal Tumors (GISTs) is also described. The involvement of circRNAs on sarcoma oncogenesis and relevant emerging diagnostic, prognostic and therapeutic applications are expected to gain more research interest in the future.
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Affiliation(s)
- Eleftheria Lakiotaki
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (D.S.K.); (A.P.); (E.A.K.); (P.K.)
| | - Dimitrios S. Kanakoglou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (D.S.K.); (A.P.); (E.A.K.); (P.K.)
| | - Andromachi Pampalou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (D.S.K.); (A.P.); (E.A.K.); (P.K.)
| | - Eleni A. Karatrasoglou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (D.S.K.); (A.P.); (E.A.K.); (P.K.)
| | - Christina Piperi
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece;
| | - Penelope Korkolopoulou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (D.S.K.); (A.P.); (E.A.K.); (P.K.)
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Yang L, Huang X, Guo H, Wang L, Yang W, Wu W, Jing D, Shao Z. Exosomes as Efficient Nanocarriers in Osteosarcoma: Biological Functions and Potential Clinical Applications. Front Cell Dev Biol 2021; 9:737314. [PMID: 34712664 PMCID: PMC8546119 DOI: 10.3389/fcell.2021.737314] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/23/2021] [Indexed: 12/12/2022] Open
Abstract
Osteosarcoma is the most common bone tumor affecting both adolescents and children. Although localized osteosarcoma has an overall survival of >70% in the clinic, metastatic, refractory, and recurrent osteosarcoma have poorer survival rates. Exosomes are extracellular vesicles released by cells and originally thought to be a way for cells to discard unwanted products. Currently, exosomes have been reported to be involved in intercellular cross-talk and induce changes in cellular behavior by transferring cargoes (proteins, DNA, RNA, and lipids) between cells. Exosomes regulate osteosarcoma progression, and processes such as tumorigenesis, proliferation, metastasis, angiogenesis, immune evasion, and drug resistance. Increasing evidences shows that exosomes have significant potential in promoting osteosarcoma progression and development. In this review, we describe the current research status of exosomes in osteosarcoma, focusing on the biological functions of osteosarcoma exosomes as well as their application in osteosarcoma as diagnostic biomarkers and therapeutic targets.
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Affiliation(s)
- Lingkai Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Huang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haoyu Guo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lutong Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenbo Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Doudou Jing
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Doxorubicin-induced novel circRNA_0004674 facilitates osteosarcoma progression and chemoresistance by upregulating MCL1 through miR-142-5p. Cell Death Discov 2021; 7:309. [PMID: 34689155 PMCID: PMC8542045 DOI: 10.1038/s41420-021-00694-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/21/2021] [Accepted: 10/04/2021] [Indexed: 12/25/2022] Open
Abstract
Accumulating evidence has shown that circular RNA (circRNA) dysregulation is involved in various types of cancer, including osteosarcoma (OS). Nevertheless, the role and mechanism of circRNAs in OS progression and chemoresistance remain elusive. We found that a novel doxorubicin-induced circular RNA, hsa_circ_0004674, screened by whole total transcriptome RNA sequencing in our previous study, was upregulated in OS chemoresistant cell lines and tissues and also connected with patients’ poor prognosis. Circ_0004674 knockdown remarkably suppressed OS cell chemoresistance, proliferation, migration, invasion, OS tumor growth, and enhanced cell cycle arrest and apoptosis in vitro and in vivo through control the expression of the antiapoptotic protein MCL1, a member of the Bcl-2 gene family. Further online bioinformatics analysis revealed that miR-142-5p had potential binding sites that can bind circ_0004674 and the 3′UTR of MCL1 mRNA. Moreover, the expression and function of miR-142-5p were conversely correlated with circ_0004674 in vitro. RIP, pull-down, luciferase assay, and RNA FISH demonstrated that circ_0004674 could compete with MCL1 for miR-142-5p binding to counteract miR-142-5p-mediated repression of MCL1 at the post-transcriptional level. To sum up, our study sheds light on the critical role of the oncogenic circ_0004674/miR-142-5p/MCL1 axis in OS progression and chemoresistance, providing a novel potential target for OS therapy.
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Zhong J, Zhang G, Yao W. Clinicopathologic significance and prognostic value of circRNAs in osteosarcoma: a systematic review and meta-analysis. J Orthop Surg Res 2021; 16:578. [PMID: 34620208 PMCID: PMC8495992 DOI: 10.1186/s13018-021-02568-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 06/17/2021] [Indexed: 12/29/2022] Open
Abstract
Abstract Background Osteosarcoma is the most prevalent malignant osseous sarcoma in children and adolescents, whose prognosis is still relatively poor nowadays. Recent studies have shown the critical function and potential clinical applications of circular RNAs (circRNAs) in osteosarcoma. Our review aimed to perform an updated meta-analysis to explore their clinicopathologic significance and prognostic value. Methods The structured literature was conducted via eight electronic databases and four gray literature sources until 20 Feb 2021 to identify eligible studies. The data was extracted directly from the articles or reconstructed based on Kaplan-Meier curves. The Newcastle-Ottawa Scale (NOS) tool was used to assess study quality. The clinicopathologic significance of circRNAs was measured through odds ratios (ORs) and their 95% confidence intervals (CIs), while the prognostic value was evaluated through hazard ratios (HRs) and their 95% CIs of overall survival (OS) and disease-free survival (DFS). Heterogeneity and publication bias were assessed. Sensitivity analyses were conducted. Subgroup analyses were performed according to study characteristics. An additional analysis was performed to investigate the relation between circ_0002052 and osteosarcoma. Results Fifty-two studies were identified, in which 38 on clinicopathologic features and 36 on survival prognosis were included in quantitative analysis. The overall study quality was moderate with a median NOS score of 5.5 stars (range 3 to 8). For clinicopathologic features, dysregulated circRNAs were related to larger tumor size (OR 2.122, 95%CI 1.418–3.175), advanced clinical stage (OR 2.847, 95%CI 2.059–3.935), and present of metastasis (OR 2.630, 95%CI 1.583–4.371). For chemotherapy, dysregulated circRNAs suggest a better response (OR 0.443, 95%CI 0.231–0.849), but a higher probability of resistance (OR 9.343, 95%CI 5.352–16.309). For survival prognosis, dysregulated circRNAs were significantly correlated with poor OS (HR 2.437, 95%CI 2.224–2.670) and DFS (HR 2.125, 95%CI 1.621–2.786). The results did not show differences among subgroups. Higher circ_0002052 expression showed a relation with poor OS (HR 3.197, 95%CI 2.054–4.976). Conclusions Our review demonstrated that abnormally expressed circRNAs have a relation with advanced clinicopathologic features and better response, but a higher probability of resistance and poor survival prognosis in osteosarcoma patients. However, more studies are encouraged to provide more robust evidence to translate circRNAs into clinical practice. Trial registration PROSPERO ID: CRD42021235031 Supplementary Information The online version contains supplementary material available at 10.1186/s13018-021-02568-2.
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Affiliation(s)
- Jingyu Zhong
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China
| | - Guangcheng Zhang
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Weiwu Yao
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China.
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Song Y, Cao P, Li J. Plasma circular RNA hsa_circ_0001821 acts as a novel diagnostic biomarker for malignant tumors. J Clin Lab Anal 2021; 35:e24009. [PMID: 34523755 PMCID: PMC8605135 DOI: 10.1002/jcla.24009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/23/2021] [Accepted: 09/04/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) can function as key regulators of oncogenic processes. The main purpose of this study was to evaluate the expression of hsa_circ_0001821 in plasma of patients with colorectal cancer (CRC) and other malignant tumors and analyze its correlations with clinical features and diagnostic values. METHODS In total, 467 plasma samples, including samples from 80 healthy controls, were collected between 2015 and 2019 from patients at the Affiliated People's Hospital of Ningbo University. Plasma levels of hsa_circ_0001821 were analyzed by qRT-PCR. The diagnostic value was performed using receiver operating characteristic (ROC) curve. RESULTS Plasma hsa_circ_0001821 was increased in CRC patients, and high hsa_circ_0001821 expression predicted advanced stage and unfavorable in overall survival. In addition, this study showed the upregulation of hsa_circ_0001821 in plasma of lung cancer and hepatocellular carcinoma (HCC). ROC curve showed that the region under the loop for the diagnosis of CRC, HCC, and lung cancer was 0.815, 0.692, and 0.792. CONCLUSION Plasma hsa_circ_0001821 possibly is a novel biological marker for malignant tumors.
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Affiliation(s)
- Yulan Song
- Blood Purification Center, The Affiliated People's Hospital, Ningbo University, Ningbo, China
| | - Peng Cao
- Department of Laboratory Medicine, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
| | - Jipeng Li
- Department of Central Laboratory, The Affiliated People's Hospital, Ningbo University, Ningbo, China
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Circ_0081001 down-regulates miR-494-3p to enhance BACH1 expression and promotes osteosarcoma progression. Aging (Albany NY) 2021; 13:17274-17284. [PMID: 34191748 PMCID: PMC8312427 DOI: 10.18632/aging.203207] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 05/24/2021] [Indexed: 12/13/2022]
Abstract
The study was aimed at deciphering the function and mechanism of circ_0081001 in osteosarcoma (OS). In this study, quantitative real-time polymerase chain reaction (qRT-PCR) was utilized for quantifying circ_0081001, miR-494-3p, and BTB domain and CNC homolog 1 (BACH1) mRNA expressions in OS tissues and cells. Cell counting kit-8 (CCK-8) assay, together with 5-Ethynyl-2'-deoxyuridine (EdU) assay, was performed for evaluating cell proliferation; the alterations in apoptosis were analyzed utilizing flow cytometry; Transwell assay was conducted for examining cell migration and invasion; moreover, Western blot was utilized for the quantification of BACH1 protein expression; bioinformatics, dual-luciferase reporter gene, and RNA-binding protein immunoprecipitation assays were executed for validating the binding relationships between circ_0081001 and miR-494-3p, and between miR-494-3p and BACH1. As shown, circ_0081001, whose expression was elevated in OS tissues, had a negative association with miR-494-3p expression and a positive correlation with BACH1 expression. After circ_0081001 was overexpressed, the proliferation, migration, and invasion of OS cells were boosted but the apoptosis was reduced, whereas miR-494-3p exhibited opposite effects. The binding sites between circ_0081001 and miR-494-3p, and between miR-494-3p and the 3’UTR of BACH1 were experimentally verified. In conclusion, circ_0081001/miR-494-3p/BACH1 axis promoted the malignant biological behaviors of OS cells.
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Zhou W, Liu Y, Wu X. Down-regulation of circITCH promotes osteosarcoma development and resistance to doxorubicin via the miR-524/RASSF6 axis. J Gene Med 2021; 23:e3373. [PMID: 34151476 DOI: 10.1002/jgm.3373] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/17/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Osteosarcoma (OS) is a malignant bone cancer, in which circular RNAs (circRNAs) act as important modulators. The present study aimed to explore the functional role of circRNA itchy E3 ubiquitin protein ligase (circITCH) in the development and doxorubicin (DXR) resistance of OS and the possible mechanistic pathway. METHODS A quantitative real-time polymerase chain reaction or western blot assays were exploited to analyze the expression of circITCH, miR-524 and Ras association domain family member 6 (RASSF6). Cell viability and half-maximal inhibitory concentration (IC50 ) value of DXR were monitored using a cell counting kit-8 assay. Cell migration, invasion and apoptosis were determined via a transwell assay and flow cytometry. The target interaction among circITCH, miR-524 and RASSF6 was validated by dual-luciferase reporter and RNA immunoprecipitation assays. A xenograft model of MG-63/DXR cells stably expressing circITCH in nude mice was established for assessing the role of circITCH in vivo. RESULTS Down-regulation of circITCH and RASSF6, as well as the up-regulation of miR-524, was revealed in OS by investigating 40 paired OS tissue and normal tissue samples. Overexpression of circITCH lowered the cell viability, IC50 value of DXR, migration and invasion, whereas it facilitated apoptosis of OS cells. circITCH sponged miR-524 to up-regulate RASSF6, causing OS progression inhibition and DXR resistance reduction. Additionally, circITCH up-regulation reduced tumor growth in vivo. CONCLUSIONS Transduction with circITCH represses OS progression and promotes DXR sensitivity by the miR-524/RASSF6 axis, providing a new perspective for therapeutic intervention.
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Affiliation(s)
- Wei Zhou
- Department of Orthopedics, Zhengzhou University First Affiliated Hospital, China
| | - Yuan Liu
- Department of Emergency, Zhengzhou University First Affiliated Hospital, China
| | - Xuejian Wu
- Department of Orthopedics, Zhengzhou University First Affiliated Hospital, China
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22
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Lin W, Wang Z, Wang J, Yan H, Han Q, Yao W, Li K. circRNA-TBC1D4, circRNA-NAALAD2 and circRNA-TGFBR3: Selected Key circRNAs in Neuroblastoma and Their Associations with Clinical Features. Cancer Manag Res 2021; 13:4271-4281. [PMID: 34093041 PMCID: PMC8168971 DOI: 10.2147/cmar.s297316] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/07/2021] [Indexed: 01/03/2023] Open
Abstract
Objective The roles of circRNAs in neuroblastoma (NB) are unclear. We used next-generation sequencing to detect the circRNA expression profiles in NB to identify the key circRNAs and analyzed the relationships between the circRNAs and clinical features. Methods Five paired neuroblastoma tumor and adjacent normal fetal adrenal medulla samples were collected for high-throughput RNA sequencing. Bioinformatics analysis was performed for functional annotation of the host genes of differentially expressed circRNAs. Validation of dysregulated circRNAs was performed by real-time quantitative reverse transcription polymerase chain reaction. The relationships between the key circRNAs and clinical features were analyzed. In addition, overexpression of key circRNAs in an NB cell line, as well as cell proliferation assays, colony formation assays and cell migration assays, was conducted to investigate the biological functions of key circRNAs. Results A total of 4704 differentially expressed circRNAs were found, including 2462 up-regulated and 2242 down-regulated circRNAs. According to our previous studies, the predicted target circRNAs of miR-21 involved in tumorigenic signaling pathways were selected, including circRNA-TBC1D4, circRNA-NAALAD2 and circRNA-TGFBR3. These circRNAs were associated with clinical features, and the circRNA expression was significantly lower (P < 0.05) in the NB tissues than in normal adrenal tissues. Overexpression of circRNA-TBC1D4 promotes NB cell migration, but not proliferation and colony-formation in vitro. Conclusion We suggest that circRNA-TBC1D4, circRNA-NAALAD2 and circRNA-TGFBR3 may be cancer suppressor genes, which act by sponging miR-21 in NB. Further investigations are needed to elucidate the underlying mechanism.
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Affiliation(s)
- Weihong Lin
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
| | - Zuopeng Wang
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
| | - Jing Wang
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
| | - Hanlei Yan
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
| | - Qilei Han
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
| | - Wei Yao
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
| | - Kai Li
- Department of Pediatric Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, People's Republic of China
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Zhao Y, Li Y, Fan D, Hou J, Bai Y, Dai C, Cao X, Qi H, Liu B. Potential role of circular RNA in cyclosporin A-induced cardiotoxicity in rats. J Appl Toxicol 2021; 42:216-229. [PMID: 34036610 PMCID: PMC9292504 DOI: 10.1002/jat.4203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/21/2021] [Accepted: 04/24/2021] [Indexed: 11/08/2022]
Abstract
Cyclosporin A (CsA) is a well-known and effective drug that is commonly used in autoimmune diseases and allotransplantation. However, kidney toxicity and cardiotoxicity limit its use. Circular RNAs (circRNAs) play a crucial role in disease, especially cardiovascular disease. We aimed to explore the circRNA expression profiles and potential mechanisms during CsA-induced cardiotoxicity. Sixty male adult Wistar rats were randomly divided into two groups. The CsA group was injected with CsA (15 mg/kg/day body weight) intraperitoneally (ip) for 2 weeks, whereas the control group was injected ip with the same volume of olive oil. We assessed CsA-induced cardiotoxicity by light microscopy, transferase-mediated dUTP nick-end labeling (TUNEL) staining, and electron microscopy. Microarray analysis was used to detect the expression profiles of circRNAs deregulated in the heart during CsA-induced cardiotoxicity. We confirmed the changes in circRNAs by quantitative PCR. Moreover, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses of the microarray data were performed. A conventional dose of CsA induced cardiotoxicity in rats. We identified 67 upregulated and 37 downregulated circRNAs compared with those in the control group. Six of 12 circRNAs were successfully verified by quantitative real-time polymerase chain reaction (qRT-PCR). GO analyses of the differentially expressed circRNAs indicated that these molecules might play important roles in CsA-induced cardiotoxicity. KEGG pathway analyses showed that the differentially expressed circRNAs in CsA-induced cardiotoxicity may be related to autophagy or the Hippo signaling pathway. We identified differential circRNA expression patterns and provided more insight into the mechanism of CsA-induced cardiotoxicity. CircRNAs may serve as potential biomarkers or therapeutic targets of CsA-mediated cardiotoxicity in the future.
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Affiliation(s)
- Yanru Zhao
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yang Li
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Dachuan Fan
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jinxiao Hou
- Department of Hematology, the Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yunpeng Bai
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chenguang Dai
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xue Cao
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hai Qi
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Bingchen Liu
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
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Circular RNA circPVT1 Contributes to Doxorubicin (DXR) Resistance of Osteosarcoma Cells by Regulating TRIAP1 via miR-137. BIOMED RESEARCH INTERNATIONAL 2021; 2021:7463867. [PMID: 33981772 PMCID: PMC8088374 DOI: 10.1155/2021/7463867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/25/2020] [Accepted: 04/13/2021] [Indexed: 12/21/2022]
Abstract
Background Chemoresistance is a major obstacle to the treatment of osteosarcoma patients. Circular RNA (circRNA) circPVT1 has been reported to be related to the doxorubicin (DXR) resistance in osteosarcoma. This study is designed to explore the role and mechanism of circPVT1 in the DXR resistance of osteosarcoma. Methods circPVT1, microRNA-137 (miR-137), and TP53-regulated inhibitor of apoptosis 1 (TRIAP1) levels were detected by real-time quantitative polymerase chain reaction (RT-qPCR). The protein levels of ATP-binding cassette, subfamily C, member 1 (ABCC1), multidrug resistance-associated protein 1 (MRP-1), cleaved- (c-) caspase-3, B-cell lymphoma-2 (Bcl-2), and TRIAP1 were examined by a western blot assay. Cell viability, proliferation, and apoptosis were detected by cell counting kit-8 (CCK-8), colony formation, and flow cytometry assays, severally. The binding relationship between miR-137 and circPVT1 or TRIAP1 was predicted by starbase 3.0 and then verified by dual-luciferase reporter and RNA Immunoprecipitation (RIP) assays. The biological role of circPVT1 in osteosarcoma tumor growth and drug resistance was examined by the xenograft tumor model in vivo. Results. circPVT1 and TRIAP1 were highly expressed, and miR-137 was decreased in DXR-resistant osteosarcoma tissues and cells. Moreover, circPVT1 knockdown could boost DXR sensitivity by inhibiting DXR-caused proliferation and DXR-induced apoptosis in DXR-resistant osteosarcoma cells in vitro. The mechanical analysis discovered that circPVT1 acted as a sponge of miR-137 to regulate TRIAP1 expression. circPVT1 silencing increased the drug sensitivity of osteosarcoma in vivo. Conclusion. circPVT1 boosted DXR resistance of osteosarcoma cells partly by regulating the miR-137/TRIAP1 axis, hinting a promising therapeutic target for the osteosarcoma treatment.
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25
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Fang Y, Long F. Circular RNA circ_0000337 contributes to osteosarcoma via the miR-4458/BACH1 pathway. Cancer Biomark 2021; 28:411-419. [PMID: 32390598 DOI: 10.3233/cbm-190647] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND As the most prevalent primary bone malignancy in children and adolescents, osteosarcoma (OS) has attracted increasing attention. The role of circRNAs in OS has been elucidated in some reports, but many circRNAs remain unexplored. Circ_0000337 has only been revealed as an oncogenic circRNA in esophageal squamous cell carcinoma. Yet whether circ_0000337 exerts any specific function in OS has not been unmasked. METHODS RT-qPCR was used for measurement of circ_0000337, miR-4458 and BACH1 mRNA levels. Western blot was conducted to detect BACH1 protein. CCK-8 assay, Casepase-3 activity assay and transwell assay were utilized to assess changes on cellular processes. Cytoplasmic/nuclear fractionation assay was conducted for circ_0000337 localization in OS cells. Luciferase reporter assay and RIP assay were performed to validate the interaction between miR-4458 and circ_0000337 or BACH1. RESULTS Circ_0000337 expression was upregulated in OS cell lines and it silence hindered OS cell proliferation and migration. MiR-4458 was downregulated in OS cells and miR-4458 upregulation suppressed OS cell growth and migration. Importantly, circ_0000337 sponged miR-4458 to elevate BACH1 expression, thus facilitating OS development. CONCLUSIONS This research for the first time documented that circ_0000337 promoted OS progression via sponging miR-4458 and thus elevating BACH1 expression, offering rational therapeutic target for OS.
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Affiliation(s)
- Yuan Fang
- Department of Orthopaedics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Fang Long
- Department of Research and Teaching Department, Hanzhong Central Hospital, Hanzhong, Shaanxi, China
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26
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Yang T, Li Y, Zhao F, Zhou L, Jia R. Circular RNA Foxo3: A Promising Cancer-Associated Biomarker. Front Genet 2021; 12:652995. [PMID: 33833780 PMCID: PMC8021895 DOI: 10.3389/fgene.2021.652995] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/01/2021] [Indexed: 12/25/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of novel non-coding RNAs (ncRNAs). Emerging evidence demonstrates that circRNAs play crucial roles in many biological processes by regulating linear RNA transcription, downstream gene expression and protein or peptide translation. Meanwhile, recent studies have suggested that circRNAs have the potential to be oncogenic or anti-oncogenic and play vital regulatory roles in the initiation and progression of tumors. Circular RNA Forkhead box O3 (circ-Foxo3, hsa_circ_0006404) is encoded by the human FOXO3 gene and is one of the most studied circular RNAs acting as a sponge for potential microRNAs (miRNAs) (Du et al., 2016). Previous studies have reported that circ-Foxo3 is involved in the development and tumorigenesis of a variety of cancers (bladder, gastric, acute lymphocytic leukemia, glioma, etc.). In this review, we summarize the current studies concerning circ-Foxo3 deregulation and the correlative mechanism in various human cancers. We also point out the potential clinical applications of this circRNA as a biomarker for cancer diagnosis and prognosis.
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Affiliation(s)
- Tianli Yang
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yang Li
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Feng Zhao
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Liuhua Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Ruipeng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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27
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Wang L, Yan X, You ZH, Zhou X, Li HY, Huang YA. SGANRDA: semi-supervised generative adversarial networks for predicting circRNA-disease associations. Brief Bioinform 2021; 22:6175330. [PMID: 33734296 DOI: 10.1093/bib/bbab028] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/31/2022] Open
Abstract
Emerging research shows that circular RNA (circRNA) plays a crucial role in the diagnosis, occurrence and prognosis of complex human diseases. Compared with traditional biological experiments, the computational method of fusing multi-source biological data to identify the association between circRNA and disease can effectively reduce cost and save time. Considering the limitations of existing computational models, we propose a semi-supervised generative adversarial network (GAN) model SGANRDA for predicting circRNA-disease association. This model first fused the natural language features of the circRNA sequence and the features of disease semantics, circRNA and disease Gaussian interaction profile kernel, and then used all circRNA-disease pairs to pre-train the GAN network, and fine-tune the network parameters through labeled samples. Finally, the extreme learning machine classifier is employed to obtain the prediction result. Compared with the previous supervision model, SGANRDA innovatively introduced circRNA sequences and utilized all the information of circRNA-disease pairs during the pre-training process. This step can increase the information content of the feature to some extent and reduce the impact of too few known associations on the model performance. SGANRDA obtained AUC scores of 0.9411 and 0.9223 in leave-one-out cross-validation and 5-fold cross-validation, respectively. Prediction results on the benchmark dataset show that SGANRDA outperforms other existing models. In addition, 25 of the top 30 circRNA-disease pairs with the highest scores of SGANRDA in case studies were verified by recent literature. These experimental results demonstrate that SGANRDA is a useful model to predict the circRNA-disease association and can provide reliable candidates for biological experiments.
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Affiliation(s)
- Lei Wang
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
| | - Xin Yan
- School of Computer Science and Technology, China University of Mining and Technology, Xuzhou, 221116, China
| | - Zhu-Hong You
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
| | - Xi Zhou
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
| | - Hao-Yuan Li
- School of Computer Science and Technology, China University of Mining and Technology, Xuzhou, 221116, China
| | - Yu-An Huang
- Department of Computing, Hong Kong Polytechnic University, Hong Kong, China
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28
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Wang M, Xie F, Lin J, Zhao Y, Zhang Q, Liao Z, Wei P. Diagnostic and Prognostic Value of Circulating CircRNAs in Cancer. Front Med (Lausanne) 2021; 8:649383. [PMID: 33816529 PMCID: PMC8012499 DOI: 10.3389/fmed.2021.649383] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/15/2021] [Indexed: 12/24/2022] Open
Abstract
Cancer has been regarded as one of the leading causes of mortality worldwide. Diagnostic and prognostic biomarkers with high sensitivity and specificity for cancer play a crucial role in preventing or treating cancer. Circular RNAs (circRNAs), which hold great potential for the management of cancer patients due to their abundance, stable property, and high specificity in serum, plasma, and other body fluids, can be used as non-invasive and blood-based biomarkers in cancer diagnosis and prognosis. There are four types of circRNAs including exonic circRNAs (ecircRNA), intronic circRNAs, exon-intron circRNAs (EIciRNA), and intergenic circRNAs. CircRNAs can act as miRNA sponges, affect protein translation, interplay with RNA binding proteins, regulate protein recruitment, and modulate protein scaffolding and assembly. Therefore, the multifunctionalities of circRNAs make them ideal for detecting and predicting cancer. Indeed, circRNAs manifest high sensitivity and specificity in more than ten types of cancer. This review aims to consolidate the types and functions of circRNAs, as well as discuss the diagnostic and prognostic value of circulating circRNAs in cancer.
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Affiliation(s)
- Mina Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,Department of Acupuncture and Moxibustion, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Key Laboratory of Acupuncture Neuromodulation, Beijing, China
| | - Feiyu Xie
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,Oncology Department, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Jiaran Lin
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.,Department of Nephrology and Endocrinology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Yihan Zhao
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qian Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Zehuan Liao
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore.,Department of Microbiology, Tumor, and Cell Biology (MTC), Karolinska Institutet, Biomedicum, Solnavägen, Sweden
| | - Peng Wei
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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29
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Wang YY, Lu RY, Shi J, Zhao S, Jiang X, Gu X. CircORC2 is involved in the pathogenesis of slow transit constipation via modulating the signalling of miR-19a and neurotensin/motilin. J Cell Mol Med 2021; 25:3754-3764. [PMID: 33629528 PMCID: PMC8051712 DOI: 10.1111/jcmm.16211] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 11/08/2020] [Accepted: 11/21/2020] [Indexed: 12/19/2022] Open
Abstract
In this study, we aimed to investigate the role of circORC2 in modulating miR‐19a and its downstream signalling during the pathogenesis of STC. In this study, three groups of patients, that is healthy control (HC) group, normal transit constipation (NTC) group (N = 42) and slow transit constipation (STC) group, were, respectively, recruited. RT‐PCR and Western blot analysis were exploited to investigate the changes in the expression levels of miR‐19a and circORC2 in these patients, so as to establish a circORC2/miR‐19a signalling pathway. The basic information of the patients showed no significant differences among different patient groups. Compared with the HC group, concentrations of neurotensin (NST) and motilin (MLN) were both significantly reduced in the NTC and STC groups, especially in the STC group. Also, miR‐19a level was highest, whereas circORC2 level was lowest in the STC group. Furthermore, circORC2 was validated to sponge the expression of miR‐19a, and the transfection of circORC2 reduced the expression of miR‐19a. Meanwhile, MLN and NST mRNAs were both targeted by miR‐19a, and the transfection of circORC2 dramatically up‐regulated the expression of MLN and NST. On the contrary, the transfection of circORC2 siRNA into SMCs and VSMCs exhibited the opposite effect of circORC2. Collectively, the results of this study established a regulatory relationship among circORC2, miR‐19a and neurotensin/motilin, which indicated that the overexpression of circORC2 could up‐regulate the levels of neurotensin and motilin, thus exerting a beneficial effect during the treatment of STC.
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Affiliation(s)
- Yuan-Yuan Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.,Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Rui-Yun Lu
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ji Shi
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shuai Zhao
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xia Jiang
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaosong Gu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
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30
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Nisar S, Bhat AA, Singh M, Karedath T, Rizwan A, Hashem S, Bagga P, Reddy R, Jamal F, Uddin S, Chand G, Bedognetti D, El-Rifai W, Frenneaux MP, Macha MA, Ahmed I, Haris M. Insights Into the Role of CircRNAs: Biogenesis, Characterization, Functional, and Clinical Impact in Human Malignancies. Front Cell Dev Biol 2021; 9:617281. [PMID: 33614648 PMCID: PMC7894079 DOI: 10.3389/fcell.2021.617281] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/04/2021] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs) are an evolutionarily conserved novel class of non-coding endogenous RNAs (ncRNAs) found in the eukaryotic transcriptome, originally believed to be aberrant RNA splicing by-products with decreased functionality. However, recent advances in high-throughput genomic technology have allowed circRNAs to be characterized in detail and revealed their role in controlling various biological and molecular processes, the most essential being gene regulation. Because of the structural stability, high expression, availability of microRNA (miRNA) binding sites and tissue-specific expression, circRNAs have become hot topic of research in RNA biology. Compared to the linear RNA, circRNAs are produced differentially by backsplicing exons or lariat introns from a pre-messenger RNA (mRNA) forming a covalently closed loop structure missing 3′ poly-(A) tail or 5′ cap, rendering them immune to exonuclease-mediated degradation. Emerging research has identified multifaceted roles of circRNAs as miRNA and RNA binding protein (RBP) sponges and transcription, translation, and splicing event regulators. CircRNAs have been involved in many human illnesses, including cancer and neurodegenerative disorders such as Alzheimer’s and Parkinson’s disease, due to their aberrant expression in different pathological conditions. The functional versatility exhibited by circRNAs enables them to serve as potential diagnostic or predictive biomarkers for various diseases. This review discusses the properties, characterization, profiling, and the diverse molecular mechanisms of circRNAs and their use as potential therapeutic targets in different human malignancies.
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Affiliation(s)
- Sabah Nisar
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Ajaz A Bhat
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Mayank Singh
- Dr. B. R. Ambedkar Institute Rotary Cancer Hospital (BRAIRCH), All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | | | - Arshi Rizwan
- Department of Nephrology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Sheema Hashem
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Puneet Bagga
- Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Ravinder Reddy
- Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Farrukh Jamal
- Dr. Rammanohar Lohia Avadh University, Ayodhya, India
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Gyan Chand
- Department of Endocrine Surgery, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Davide Bedognetti
- Laboratory of Cancer Immunogenomics, Cancer Research Department, Sidra Medicine, Doha, Qatar.,Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa, Italy.,College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Wael El-Rifai
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | | | - Muzafar A Macha
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science and Technology (IUST), Pulwama, India
| | - Ikhlak Ahmed
- Research Branch, Sidra Medicine, Doha, Qatar.,Research Branch, Sidra Medicine, Doha, Qatar
| | - Mohammad Haris
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar.,Laboratory Animal Research Center, Qatar University, Doha, Qatar
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Meng QH, Li Y, Kong C, Gao XM, Jiang XJ. Circ_0000388 Exerts Oncogenic Function in Cervical Cancer Cells by Regulating miR-337-3p/TCF12 Axis. Cancer Biother Radiopharm 2021; 36:58-69. [PMID: 32119786 DOI: 10.1089/cbr.2019.3159] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Qing-hua Meng
- Department of Gynaecology and Obstetrics, Linyi Central Hospital, Linyi, China
| | - Ying Li
- Department of Gynaecology and Obstetrics, The Third People's Hospital of Linyi, Linyi, China
| | - Cui Kong
- Department of Gynaecology and Obstetrics, The Third People's Hospital of Linyi, Linyi, China
| | - Xue-mei Gao
- Department of Gynaecology and Obstetrics, Linyi Central Hospital, Linyi, China
| | - Xiao-juan Jiang
- Department of Gynaecology and Obstetrics, Jinan Maternal and Child Health Hospital of Shandong Province, Jinan, China
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32
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Zhang C, He J, Qi L, Wan L, Wang W, Tu C, Li Z. Diagnostic and Prognostic Significance of Dysregulated Expression of Circular RNAs in Osteosarcoma. Expert Rev Mol Diagn 2021; 21:235-244. [PMID: 33428501 DOI: 10.1080/14737159.2021.1874922] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE This study aimed to perform an updated meta-analysis to explore the clinical, diagnostic, and prognostic values of circRNAs in osteosarcoma. METHODS : PubMed, Web of Science, EMBASE, Scopus, and Cochrane Library were systematically searched up to December 15, 2020. Eligible studies regarding the relationship between circRNAs levels and clinicopathological, diagnostic, and prognostic values in osteosarcoma were included for study. RESULTS 31 studies involving 1979 osteosarcoma patients were enrolled, with 22 studies on clinicopathological parameters, eleven on diagnosis, and 23 on prognosis. For clinical parameters, overexpression of oncogenic circRNAs was intimately correlated with larger tumor size, advanced Enneking stage, poor differentiation, and distant metastasis (DM). In contrast, the downregulated circRNAs showed negative correlation with Enneking stage and DM. For the diagnostic values, the summary area under the curve of circRNA for the discriminative efficacy between osteosarcoma patients and non-cancer counterparts was estimated to be 0.87, with a weighted sensitivity of 0.79, specificity of 0.81, respectively. For the prognostic significance, oncogenic circRNAs had poor overall survival (OS) and disease-free survival, while elevated expression of tumor-suppressor circRNAs were closely related to longer OS. CONCLUSION This study showed that aberrantly expressed circRNA signatures could serve as potential biomarkers in diagnosis and prognosis in osteosarcoma.
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Affiliation(s)
- Chenghao Zhang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jieyu He
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Qi
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lu Wan
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wanchun Wang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chao Tu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhihong Li
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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Zhu X, Liu C, Shi J, Zhou Z, Chen S, Jami SA. Circular RNA circANKIB1 promotes the progression of osteosarcoma by regulating miR-217/PAX3 axis. J Bone Oncol 2021; 27:100347. [PMID: 33552886 PMCID: PMC7844576 DOI: 10.1016/j.jbo.2021.100347] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/21/2020] [Accepted: 01/05/2021] [Indexed: 11/17/2022] Open
Abstract
Background Circular RNAs (circRNAs) have been discovered to exert essential roles in human cancers, including osteosarcoma (OS). The aim of this study was to investigate the exact roles and regulatory mechanism of circRNA ankyrin repeat and IBR domain containing 1 (circANKIB1) in OS. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was used to measure the expression levels of circANKIB1, microRNA-217 (miR-217) and paired box 3 (PAX3). Cell proliferation was assessed by colony formation assay. Cell cycle distribution and apoptosis rate were determined by flow cytometry analysis. Wound healing assay and transwell assay were employed to evaluate cell migration and invasion abilities. Western blot assay was used to analyze the protein levels of PAX3, E-cadherin and Vimentin. Targeting relationship between miR-217 and circANKIB1 or PAX3 was predicted by Circular RNA Interactome or TargetScan and demonstrated by dual-luciferase reporter assay. The mice xenograft model was established to confirm the role of circANKIB1 in vivo. Results CircANKIB1 and PAX3 were high-expressed, whereas miR-217 was low-expressed in OS tissues and cells. Knockdown of circANKIB1 inhibited the progression of OS by reducing cell proliferation, migration, invasion, and tumor growth (in vivo), and inducing apoptosis. MiR-217 was a direct target of circANKIB1, and its inhibition reversed the inhibitory effect of circANKIB1 knockdown on the progression of OS cells. Moreover, PAX3 was a direct target of miR-217, and miR-217 exerted the anti-tumor role in OS cells by targeting PAX3. Furthermore, circANKIB1 positively regulated PAX3 expression by sponging miR-217. Conclusion Knockdown of circANKIB1 suppressed OS progression by upregulating miR-217 and downregulating PAX3, which might provide a novel insight into the pathogenesis of OS.
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Affiliation(s)
- Xi Zhu
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
| | - Changhao Liu
- Department of Spinal Surgery, Ningxia Medical University, Ningxia, China
| | - Jiandang Shi
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
- Corresponding author at: Department of Spinal Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli South Street, Yinchuan City, Ningxia Hui Autonomous Region 750004, China.
| | - Zhanwen Zhou
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
| | - Suoli Chen
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
| | - Sayed Abdulla Jami
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
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Wei W, Ji L, Duan W, Zhu J. Circular RNA circ_0081001 knockdown enhances methotrexate sensitivity in osteosarcoma cells by regulating miR-494-3p/TGM2 axis. J Orthop Surg Res 2021; 16:50. [PMID: 33435987 PMCID: PMC7805151 DOI: 10.1186/s13018-020-02169-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 12/25/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) have been shown to participate in the chemoresistance and tumorigenesis of multiple cancers. The purpose of this research was to investigate the function of circ_0081001 in methotrexate (MTX) resistance of osteosarcoma (OS) and its potential molecular mechanism. METHODS The expression of circ_0081001, cytochrome P450 family 51 subfamily A member 1 (CYP51A1), and miR-494-3p was detected by qRT-PCR. Cell viability, apoptosis, migration, and invasion were evaluated by Cell Counting Kit-8 (CCK-8) assay, flow cytometry, and transwell assay, respectively. Western blot (WB) assay was used to measure the protein levels of cleaved-caspase3 (cleaved-casp3), E-cadherin, N-cadherin, and transglutaminase-2 (TGM2). The interaction between miR-494-3p and circ_0081001 or TGM2 was predicted by bioinformatics analysis and verified using the dual-luciferase reporter assay. The mice xenograft model was established to investigate the roles of circ_0081001 in MTX resistance of OS in vivo. RESULTS Circ_0081001 and TGM2 were upregulated, and miR-494-3p was downregulated in MTX-resistant OS tissues and cells. Moreover, circ_0081001 interference enhanced cell sensitivity to MTX through promoting apoptosis and inhibiting cell viability and metastasis in vitro. Furthermore, circ_0081001 was identified as a molecular sponge of miR-494-3p to upregulate TGM2 level. In addition, circ_0081001 knockdown inhibited MTX resistance via upregulating miR-494-3p and downregulating TGM2. Besides, circ_0081001 downregulation improved MTX sensitivity of OS in vivo. CONCLUSION Knockdown of circ_0081001 enhanced MTX sensitivity of OS cells through downregulating TGM2 by sponging miR-494-3p, elucidating a novel regulatory mechanism for chemoresistance of OS and providing a potential circRNA-targeted therapy for OS.
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Affiliation(s)
- Wei Wei
- Department of Orthopedics, Shaoxing Shangyu People's Hospital, No. 517 Civic Avenue, Baiguan Street, Shangyu District, Shaoxing, Zhejiang, 312300, China.
| | - Liefeng Ji
- Department of Orthopedics, Shaoxing Shangyu People's Hospital, No. 517 Civic Avenue, Baiguan Street, Shangyu District, Shaoxing, Zhejiang, 312300, China
| | - Wanli Duan
- Department of Orthopedics, Shaoxing Shangyu People's Hospital, No. 517 Civic Avenue, Baiguan Street, Shangyu District, Shaoxing, Zhejiang, 312300, China
| | - Jiang Zhu
- Department of Orthopedics, Shaoxing Shangyu People's Hospital, No. 517 Civic Avenue, Baiguan Street, Shangyu District, Shaoxing, Zhejiang, 312300, China
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Wang S, Zhang K, Tan S, Xin J, Yuan Q, Xu H, Xu X, Liang Q, Christiani DC, Wang M, Liu L, Du M. Circular RNAs in body fluids as cancer biomarkers: the new frontier of liquid biopsies. Mol Cancer 2021; 20:13. [PMID: 33430880 PMCID: PMC7798340 DOI: 10.1186/s12943-020-01298-z] [Citation(s) in RCA: 171] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 12/21/2020] [Indexed: 02/08/2023] Open
Abstract
Cancer is a leading cause of death worldwide, particularly because of its high mortality rate in patients who are diagnosed at late stages. Conventional biomarkers originating from blood are widely used for cancer diagnosis, but their low sensitivity and specificity limit their widespread application in cancer screening among the general population. Currently, emerging studies are exploiting novel, highly-accurate biomarkers in human body fluids that are obtainable through minimally invasive techniques, which is defined as liquid biopsy. Circular RNAs (circRNAs) are a newly discovered class of noncoding RNAs generated mainly by pre-mRNA splicing. Following the rapid development of high-throughput transcriptome analysis techniques, numerous circRNAs have been recognized to exist stably and at high levels in body fluids, including plasma, serum, exosomes, and urine. CircRNA expression patterns exhibit distinctly differences between patients with cancer and healthy controls, suggesting that circRNAs in body fluids potentially represent novel biomarkers for monitoring cancer development and progression. In this study, we summarized the expression of circRNAs in body fluids in a pan-cancer dataset and characterized their clinical applications in liquid biopsy for cancer diagnosis and prognosis. In addition, a user-friendly web interface was developed to visualize each circRNA in fluids (https://mulongdu.shinyapps.io/circrnas_in_fluids/).
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Affiliation(s)
- Sumeng Wang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China
| | - Ke Zhang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China
| | - Shanyue Tan
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China
| | - Junyi Xin
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Centre for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Centre for Global Health, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China
| | - Qianyu Yuan
- Departments of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - Huanhuan Xu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China
| | - Xian Xu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China
| | - Qi Liang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China
| | - David C Christiani
- Departments of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.,Department of Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
| | - Meilin Wang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Centre for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China. .,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Centre for Global Health, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China.
| | - Lingxiang Liu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, People's Republic of China.
| | - Mulong Du
- Department of Biostatistics, Centre for Global Health, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China.
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36
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Circular RNAs as biomarkers and therapeutic targets in cancer. Semin Cancer Biol 2021; 83:242-252. [PMID: 33434640 DOI: 10.1016/j.semcancer.2020.12.026] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/25/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023]
Abstract
Circular RNAs (circRNAs) are a class of single-stranded closed non-coding RNA molecules (ncRNAs), which are formed as a result of reverse splicing of mRNAs. Despite their relative abundance, an interest in understanding their regulatory importance is rather recent. High stability, abundance and evolutionary conservation among species underline some of their important traits. CircRNAs perform a variety of cellular functions ranging from miRNA and proteins sponges to transcriptional modulation and splicing. Additionally, most circRNAs are expressed aberrantly in pathological conditions suggesting their possible exploitation as diagnostic biomarkers. Their covalent closed cyclic structure resulting in resistance to RNases further makes them suitable as cancer biomarkers. Studies involving human tumors have verified differences in the expression profiles of circRNAs, indicating a regulatory role in cancer pathogenesis and metastasis. As endogenous competitive RNA, circRNAs can regulate tumor proliferation and invasion. Further, some circRNAs located in the nucleus can regulate transcription of genes by binding to RNA polymerase II. In this review, we elaborate the characteristics, functions and mechanisms of action of circRNAs in cancer. We also discuss the possibility of using circRNAs as potential therapeutic targets and biomarkers for cancer.
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37
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Cheng D, Wang J, Dong Z, Li X. Cancer-related circular RNA: diverse biological functions. Cancer Cell Int 2021; 21:11. [PMID: 33407501 PMCID: PMC7789196 DOI: 10.1186/s12935-020-01703-z] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023] Open
Abstract
Noncoding RNAs, including long noncoding RNAs (lncRNAs), microRNAs (miRNAs) and circular RNAs (circRNAs), are involved in regulating biological functions. In recent decades, miRNAs and lncRNAs have both inspired a wave of research, but the study of circRNA functions is still in its infancy. Studies have found that circRNAs actively participate in the occurrence and development of various diseases, which emphasizes the importance of circRNAs. Here, we review the features and classification of circRNAs and summarize their functions. Then, we briefly describe how to analyze circRNAs by bioinformatics procedures. In addition, the relationship between circRNAs and cancers is discussed with an emphasis on proving whether circRNAs can be potential biomarkers for the prognosis and diagnosis of cancer.
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Affiliation(s)
- Dan Cheng
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.,China-US (Henan) Hormel Cancer Institute, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China
| | - Jing Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.,China-US (Henan) Hormel Cancer Institute, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China
| | - Zigang Dong
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.,China-US (Henan) Hormel Cancer Institute, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China
| | - Xiang Li
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China. .,China-US (Henan) Hormel Cancer Institute, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China.
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38
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Wang Y, Lin Q, Song C, Ma R, Li X. Depletion of circ_0007841 inhibits multiple myeloma development and BTZ resistance via miR-129-5p/JAG1 axis. Cell Cycle 2020; 19:3289-3302. [PMID: 33131409 DOI: 10.1080/15384101.2020.1839701] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Circular RNAs (circRNAs) possess important regulatory effects on multiple myeloma (MM) progression. Here, we aimed at exploring the function of circ_0007841 in MM and the underlying molecular mechanism. Expression of circ_0007841, microRNA (miR)-129-5p and Jagged1 (JAG1) was determined via qRT-PCR or western blot assay. Methyl thiazolyl tetrazolium (MTT) assay was applied to examine cell viability and IC50 value of MM cells to bortezomib (BTZ). Colony formation assay was performed to analyze cell proliferation. Moreover, cell apoptosis was assessed by flow cytometry and western blot analysis. Cell metastasis was evaluated by wound healing assay and Transwell assay. Function of circ_0007841 in vivo was determined by xenograft tumor assay. Target relationship between miR-129-5p and circ_0007841 or JAG1 was confirmed via dual-luciferase reporter, RNA immunoprecipitation (RIP) and pull-down assays. The up-regulation of circ_0007841 and JAG1, and the down-regulation of miR-129-5p were detected in MM bone marrow aspirates and cells. Circ_0007841 knockdown significantly repressed cell proliferation, chemoresistance, and metastasis, while contributed to apoptosis of MM cells in vitro, and reduced tumor growth in vivo. Circ_0007841 targeted miR-129-5p, and miR-129-5p inhibition reversed impact of silencing of circ_0007841 on MM cells. JAG1 was a mRNA target of miR-129-5p, whose overexpression could undermine the miR-129-5p-mediated effects on MM cells. Circ_0007841 positively regulated JAG1 expression via absorbing miR-129-5p. Circ_0007841 knockdown inhibited MM cell proliferation, metastasis and chemoresistance through modulating miR-129-5p/JAG1 axis, suggesting that circ_0007841 might serve as a potential therapeutic target of MM.
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Affiliation(s)
- Yan Wang
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Quande Lin
- Department of Hematology, Henan Cancer Hospital , Zhengzhou, Henan, China
| | - Chunge Song
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Ruojin Ma
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Xiaojie Li
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
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Dong L, Zhang L, Liu H, Xie M, Gao J, Zhou X, Zhao Q, Zhang S, Yang J. Circ_0007331 knock-down suppresses the progression of endometriosis via miR-200c-3p/HiF-1α axis. J Cell Mol Med 2020; 24:12656-12666. [PMID: 32960511 PMCID: PMC7686986 DOI: 10.1111/jcmm.15833] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 08/05/2020] [Accepted: 08/18/2020] [Indexed: 12/14/2022] Open
Abstract
Endometriosis is considered a benign gynaecological disease with cancer-like characterizations, which has a high incidence among women of reproductive age. However, this disease has so far lacked timely diagnosis and effective treatment owing to its unclear aetiology. In this study, we identified aberrant high expression of circ_0007331 in ectopic endometrial cells by comparing the endometrial samples from patients with and without endometriosis. Further functional experiments revealed that circ_0007331 knock-down effectively suppressed the viability, proliferation and invasive capacity of ectopic endometrial cells. Additionally, we attempted to define the molecular mechanism of circ_0007331 in the initiation and progression of endometriosis. Circ_0007331 acted as a miRNA sponge for miR-200c-3p to indirectly regulate the function of HIF-1α, which plays a key role in the local angiogenesis and hypoxic mechanisms of ectopic endometrium. A final in vivo experiment confirmed that circ_0007331 knock-down could suppress the development of endometriosis through down-regulating the expression of HIF-1α. Collectively, we preliminarily characterized the role and possible insights of circ_0007331/miR-200c-3p/HIF-1α axis in the proliferation and invasion of ectopic endometrial cells. We hope that by exploring the potential function and molecular mechanism of circ_0007331, we can increase our biological insight into the pathogenesis of endometriosis, which will bring the new ways for the diagnosis and therapy of this disease.
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Affiliation(s)
- Lan Dong
- Department of GynecologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Lu Zhang
- Department of ObstetricsRenmin Hospital of Wuhan UniversityWuhanChina
| | - Hua Liu
- Department of GynecologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Meiting Xie
- Department of ObstetricsRenmin Hospital of Wuhan UniversityWuhanChina
| | - Jing Gao
- Ultrasound Department of Obstetrics and GynecologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Xiaoyan Zhou
- Ultrasound Department of Obstetrics and GynecologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Qinghong Zhao
- Ultrasound Department of Obstetrics and GynecologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Silin Zhang
- Reproductive Medical CenterRenmin Hospital of Wuhan UniversityWuhanChina
| | - Jing Yang
- Reproductive Medical CenterRenmin Hospital of Wuhan UniversityWuhanChina
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Liu J, Yang L, Fu Q, Liu S. Emerging Roles and Potential Biological Value of CircRNA in Osteosarcoma. Front Oncol 2020; 10:552236. [PMID: 33251132 PMCID: PMC7673402 DOI: 10.3389/fonc.2020.552236] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 09/21/2020] [Indexed: 12/20/2022] Open
Abstract
Circular RNAs (circRNAs) are endogenous noncoding RNAs that are widely found in eukaryotic cells. They have been found to play a vital biological role in the development of human diseases. At present, circRNAs have been involved in the pathogenesis, diagnosis, and targeted treatment of multiple tumors. This article reviews the research progress of circRNAs in osteosarcoma (OSA) in recent years. The potential connection between circRNAs and OSA cell proliferation, apoptosis, metastasis, and chemotherapy sensitivity or resistance, as well as clinical values, is described in this review. Their categories and functions are generally summarized to facilitate a better understanding of OSA pathogenesis, and findings suggest novel circRNA-based methods may be used to investigate OSA and provide an outlook for viable biomarkers and therapeutic targets.
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Affiliation(s)
- Jiamei Liu
- Department of Pathology, The Shengjing Hospital of China Medical University, Shenyang, China
| | - Liyu Yang
- Department of Orthopedics, The Shengjing Hospital of China Medical University, Shenyang, China
| | - Qin Fu
- Department of Orthopedics, The Shengjing Hospital of China Medical University, Shenyang, China
| | - Shengye Liu
- Department of Orthopedics, The Shengjing Hospital of China Medical University, Shenyang, China
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41
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Rajappa A, Banerjee S, Sharma V, Khandelia P. Circular RNAs: Emerging Role in Cancer Diagnostics and Therapeutics. Front Mol Biosci 2020; 7:577938. [PMID: 33195421 PMCID: PMC7655967 DOI: 10.3389/fmolb.2020.577938] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/26/2020] [Indexed: 12/17/2022] Open
Abstract
Circular RNAs (circRNAs) are rapidly coming to the fore as major regulators of gene expression and cellular functions. They elicit their influence via a plethora of diverse molecular mechanisms. It is not surprising that aberrant circRNA expression is common in cancers and they have been implicated in multiple aspects of cancer pathophysiology such as apoptosis, invasion, migration, and proliferation. We summarize the emerging role of circRNAs as biomarkers and therapeutic targets in cancer.
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Affiliation(s)
| | | | - Vivek Sharma
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani - Hyderabad Campus, Hyderabad, India
| | - Piyush Khandelia
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani - Hyderabad Campus, Hyderabad, India
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Li H, He L, Tuo Y, Huang Y, Qian B. Circular RNA hsa_circ_0000282 contributes to osteosarcoma cell proliferation by regulating miR-192/XIAP axis. BMC Cancer 2020; 20:1026. [PMID: 33097010 PMCID: PMC7583201 DOI: 10.1186/s12885-020-07515-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/09/2020] [Indexed: 01/20/2023] Open
Abstract
Background Circular RNAs (circRNAs) have emerged as a novel category of non-coding RNA, which exhibit a pivotal effect on regulating gene expression and biological functions, yet how circRNAs function in osteosarcoma (OSA) still demands further investigation. This study aimed at probing into the function of hsa_circ_0000282 in OSA. Methods The expressions of circ_0000282 and miR-192 in OSA tissues and cell lines were examined by quantitative real-time polymerase chain reaction (qRT-PCR), and the correlation between the expression level of circ_0000282 and clinicopathological features of OSA patients was analyzed. The expressions of X-linked inhibitor of apoptosis protein (XIAP), B-cell lymphoma-2 (Bcl-2) and Bcl-2 associated X protein (Bax) in OSA cells were assayed by Western blot. The proliferation and apoptosis of OSA cells were examined by CCK-8, BrdU and flow cytometry, respectively. Bioinformatics analysis, dual-luciferase reporter gene assay and RIP experiments were employed to predict and validate the targeting relationships between circ_0000282 and miR-192, and between miR-192 and XIAP, respectively. Results Circ_0000282 was highly expressed in OSA tissues and cell lines, which represented positive correlation with Enneking stage of OSA patients and negative correlation with tumor differentiation degree. In vitro experiments confirmed that overexpression of circ_0000282 markedly facilitated OSA cell proliferation and repressed cancer cell apoptosis in comparison to control group. Besides, knockdown of circ_0000282 repressed OSA cell proliferation and promoted apoptosis. Additionally, the binding relationships between circ_0000282 and miR-192, and between miR-192 and XIAP were validated. Circ_0000282 indirectly up-regulated XIAP expression by adsorbing miR-192, thereby playing a role in promoting cancer in OSA. Conclusion Circ_0000282 was a novel oncogenic circRNA in OSA. Circ_0000282/miR-192/XIAP axis regulated OSA cell proliferation apoptosis with competitive endogenous RNA mechanism.
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Affiliation(s)
- Houkun Li
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 76 Nanguo Road, Xi'an, 710054, Shaanxi, China.
| | - Limin He
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 76 Nanguo Road, Xi'an, 710054, Shaanxi, China
| | - Yuan Tuo
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 76 Nanguo Road, Xi'an, 710054, Shaanxi, China
| | - Yansheng Huang
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 76 Nanguo Road, Xi'an, 710054, Shaanxi, China
| | - Bing Qian
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 76 Nanguo Road, Xi'an, 710054, Shaanxi, China
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Tan X, Tan D, Li H, Lin Y, Wen Z, Zeng C. circEPSTI1 Acts as a ceRNA to Regulate the Progression of Osteosarcoma. Curr Cancer Drug Targets 2020; 20:288-294. [PMID: 31702512 DOI: 10.2174/1568009619666191107140948] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/22/2019] [Accepted: 10/03/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Recent studies have reported the vital roles of circular RNAs (circRNAs) in tumor progression. However, the function and expression profile of most circRNAs in osteosarcoma remain unclear. METHODS We examined the expression of circEPSTI1, a circRNA, in 50 paired adjacent normal tissues and osteosarcoma tissues by qRT-PCR. Then, we further explored the function of circEPSTI1 in osteosarcoma progression in vitro and in vivo. For example, cell proliferation and migration were examined. Some experiments were performed to explore the regulatory function of circEPSTI1 in miRNA and to investigate the potential role of circEPSTI1 in osteosarcoma. RESULTS We found that circEPSTI1 was significantly upregulated in osteosarcoma. Inhibition of circEPSTI1 suppressed the osteosarcoma cancer cell proliferation and migration in vitro. Dual luciferase reporter assay showed that circEPSTI1 and MCL1 (myeloid cell leukaemia 1) could bind to miR-892b and that MCL1 and circEPSTI1 were targets of miR-892b. CONCLUSION Thus, the circEPSTI1-miR-892b-MCL1 axis affected osteosarcoma progression through the miRNA sponging mechanism. circEPSTI1 may serve as a target and biomarker for osteosarcoma treatment.
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Affiliation(s)
- Xinyu Tan
- Department of Orthopedics, Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics Guangdong Province, Guangzhou, Guangdong, 510630, China
| | - Duxun Tan
- Emergency Department, Nanhai Hospital, Southern Medical University, Guangzhou, China
| | - Haomiao Li
- Department of Orthopedics, Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics Guangdong Province, Guangzhou, Guangdong, 510630, China
| | - Ye Lin
- Department of Orthopedics, Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics Guangdong Province, Guangzhou, Guangdong, 510630, China
| | - Zhishen Wen
- Department of Orthopedics, Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics Guangdong Province, Guangzhou, Guangdong, 510630, China
| | - Canjun Zeng
- Department of Orthopedics, Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics Guangdong Province, Guangzhou, Guangdong, 510630, China
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Lei S, Xiang L. Up-Regulation of circRNA hsa_circ_0003074 Expression is a Reliable Diagnostic and Prognostic Biomarker in Patients with Osteosarcoma. Cancer Manag Res 2020; 12:9315-9325. [PMID: 33061621 PMCID: PMC7532912 DOI: 10.2147/cmar.s262093] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/28/2020] [Indexed: 12/12/2022] Open
Abstract
Objective The purpose of this study was to detect the expression level of circRNA hsa_circ_0003074 in the tissues and peripheral blood of patients with osteosarcoma, and to explore its value in diagnosis and predicting prognosis of patients with osteosarcoma. Materials and Methods Tissue samples of osteosarcoma patients for chip sequencing were collected and circRNA hsa_circ_0003074, which was associated with the most obvious differential expression, was selected for qRT-PCR analysis. At the same time, the expression levels of hsa_circ_0003074 in different osteosarcoma cell lines, and in the peripheral blood of osteosarcoma patients before and after chemotherapy or surgery, as well as those in healthy volunteers matched by age and sex were also tested. This study aimed to explore the relationship between hsa_circ_0003074 and clinical characteristics of patients with osteosarcoma and analyzed its impact on patient survival. Results High expression of hsa_circ_0003074 was detected in osteosarcoma tissues, peripheral blood and osteosarcoma cell lines, and the expression level of hsa_circ_0003074 in the peripheral blood of patients with osteosarcoma decreased significantly after chemotherapy or surgery. In addition, hsa_circ_0003074 was closely related to clinical characteristics, such as tumor size, lung metastasis, enneking stage, and chemotherapy resistance. The ROC curve showed that hsa_circ_0003074 was a good diagnostic indicator for osteosarcoma, and survival analysis results revealed that high expression of hsa_circ_0003074 affected the survival of patients. Conclusion hsa_circ_0003074 is not only highly expressed in the tissues and peripheral blood of osteosarcoma patients but also a reliable diagnostic and prognostic biomarker for osteosarcoma patients.
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Affiliation(s)
- Saiyun Lei
- Department of Joint Surgical, The Second Affiliated Hospital of University of South China, Hengyang 421001, People's Republic of China
| | - Lei Xiang
- Department of Traumatic Orthopedics, Affiliated Nanhua Hospital, University of South China, Hengyang 421002, People's Republic of China
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Jin P, Li LH, Shi Y, Hu NB. Salidroside inhibits apoptosis and autophagy of cardiomyocyte by regulation of circular RNA hsa_circ_0000064 in cardiac ischemia-reperfusion injury. Gene 2020; 767:145075. [PMID: 32858179 DOI: 10.1016/j.gene.2020.145075] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/08/2020] [Accepted: 08/19/2020] [Indexed: 10/23/2022]
Abstract
Salidroside (Sal), a natural extract of Rhodiola rosea, shows a latent effect on protecting cardiovascular system. Our study explored the effect of salidroside on ischemia-reperfusion (I/R) injury in rat heart. I/R was performed on Wistar rat hearts, and Sal pretreatment was performed in I/R rats. Cardiac marker enzyme, myocardial infarct size, malondialdehyde (MDA) and superoxide dismutase (SOD) content were then measured. Compared with the untreated group, Sal pretreatment observably ameliorated the cardiac function, decreased the myocardial infarct size, reduced the levels of cardiac lactate creatine kinase-MB (CK-MB) and dehydrogenase (LDH), and inhibited the anti-oxidative stress. In addition, Sal treatment also significantly inhibited autophagy and apoptosis, which could be partially reversed by Rapamycin (RAPA), an autophagic agonist. Furthermore, Sal treatment attenuated autophagy by up-regulating the expression of hsa_circ_0000064 (circ-0000064) and Rapamycin (RAPA) treatment abolished it. Our study showed that Sal protected the heart from I/R injury, which might berelated to the upregulation of circ-0000064 and the inhibition of autophagy.
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Affiliation(s)
- Ping Jin
- Department of Intensive Care Unit (ICU), Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Jingzhou, Hubei, China.
| | - Liang-Hai Li
- Department of Intensive Care Unit (ICU), Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Jingzhou, Hubei, China
| | - Yan Shi
- Department of Emergency, Huai'an Second People's Hospital and the Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Nan-Bin Hu
- Department of Intensive Care Unit, Lian Shui People's Hospital, Lian Shui, Huan'an, China
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Xu T, Wang M, Jiang L, Ma L, Wan L, Chen Q, Wei C, Wang Z. CircRNAs in anticancer drug resistance: recent advances and future potential. Mol Cancer 2020; 19:127. [PMID: 32799866 PMCID: PMC7429705 DOI: 10.1186/s12943-020-01240-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022] Open
Abstract
CircRNAs are a novel class of RNA molecules with a unique closed continuous loop structure. CircRNAs are abundant in eukaryotic cells, have unique stability and tissue specificity, and can play a biological regulatory role at various levels, such as transcriptional and posttranscriptional levels. Numerous studies have indicated that circRNAs serve a crucial purpose in cancer biology. CircRNAs regulate tumor behavioral phenotypes such as proliferation and migration through various molecular mechanisms, such as miRNA sponging, transcriptional regulation, and protein interaction. Recently, several reports have demonstrated that they are also deeply involved in resistance to anticancer drugs, from traditional chemotherapeutic drugs to targeted and immunotherapeutic drugs. This review is the first to summarize the latest research on circRNAs in anticancer drug resistance based on drug classification and to discuss their potential clinical applications.
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Affiliation(s)
- Tianwei Xu
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Mengwei Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Lihua Jiang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Li Ma
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Li Wan
- Department of Oncology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, 223300, Jiangsu, China
| | - Qinnan Chen
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Chenchen Wei
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China.
| | - Zhaoxia Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China.
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Li J, Sun Q, Zhu S, Xi K, Shi Q, Pang K, Liu X, Li M, Zhang Y, Sun J. Knockdown of circHomer1 ameliorates METH-induced neuronal injury through inhibiting Bbc3 expression. Neurosci Lett 2020; 732:135050. [PMID: 32450188 DOI: 10.1016/j.neulet.2020.135050] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/25/2020] [Accepted: 05/10/2020] [Indexed: 12/19/2022]
Abstract
Current studies have illustrated that circular RNAs (circRNAs) are a vital part of non-coding RNA (ncRNAs) species and highly abundant and dynamically expressed in brain. However, the exact mechanisms by which circRNAs modulate methamphetamine (METH)-induced neuronal damage still remain largely unexplored. Consistent with our previous study, the expression of circHomer1 was significantly up-regulated after METH treatment in HT-22 cells. We confirmed its loop structure by detection of its back-splice junction with qRT-PCR product via sequence. Moreover, circHomer1 was resistant against RNase R digestion compared with its linear mRNA Homer1. Inhibition of circHomer1 expression indeed alleviated METH-induced neurotoxicity, with lower apoptosis rate via flow cytometry and cleaved Caspase3 protein level. Furthermore, we speculated that Bbc3 functioned as a target of circHomer1 based on computational algorithm, and knockdown of circHomer1 actually reduced Bbc3 expression at the mRNA and protein level. Besides, suppression of Bbc3 decreased the reactive oxygen species (ROS) level and radio of PI-positive cells. Furthermore, we analyzed the correlation in pairs among circHomer1, Bbc3 and behaviors in well-developed METH-addicted models using Pearson's correlation coefficient, which implied an important role of circHomer1 and Bbc3 in addictive behaviors. In all, we for the first time identified a novel circRNA, circHomer1 and our results suggested that circHomer1 regulated METH-induced lethal process by suppressing the Bbc3 expression.
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Affiliation(s)
- Junwei Li
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Qiyun Sun
- Department of Orthopedics, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, 277100, China
| | - Shaowei Zhu
- Department of Neurology, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, China
| | - Kaiyan Xi
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Qingqing Shi
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Kunkun Pang
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Xiaoyu Liu
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Meng Li
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Yue Zhang
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China
| | - Jinhao Sun
- Department of Anatomy, School of Basic Medical Science, Shandong University, Jinan, Shandong, 250012, China.
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Li X, Liu Y, Zhang X, Shen J, Xu R, Liu Y, Yu X. Circular RNA hsa_circ_0000073 contributes to osteosarcoma cell proliferation, migration, invasion and methotrexate resistance by sponging miR-145-5p and miR-151-3p and upregulating NRAS. Aging (Albany NY) 2020; 12:14157-14173. [PMID: 32706759 PMCID: PMC7425447 DOI: 10.18632/aging.103423] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 04/28/2020] [Indexed: 01/20/2023]
Abstract
An increasing number of studies have demonstrated that circular RNAs (circRNAs), as promising therapeutic targets, are essential for diverse human diseases, especially cancer. However, the potential functions and complex mechanisms of most circRNAs in osteosarcoma (OS) are still not fully elucidated. In the present study, we obtained the expression profile of circRNAs from a GEO database (GSE96964) and identified hsa_circ_0000073 as a highly expressed candidate in OS. Overexpression of hsa_circ_0000073 accelerated the proliferation, migration, invasion and MTX resistance of OS cells, and knockdown of hsa_circ_0000073 resulted in the opposite effects. Mechanistically, hsa_circ_0000073 upregulated NRAS expression by targeting miR-145-5p and miR-151-3p in OS cells. In addition, the promotion of OS progression by hsa_circ_000007 was blocked by miR-145-5p and miR-151-3p-mediated NRAS inhibition. In conclusion, hsa_circ_0000073 facilitated the proliferation, migration, invasion and MTX resistance of OS cells through the inhibition of miR-145-5p and miR-151-3p-mediated downregulation of NRAS.
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Affiliation(s)
- Xia Li
- Department of Orthopaedics, The Affiliated Huai'an Hospital of Xuzhou Medical University and The Second People's Hospital of Huai'an, Huai'an 223002, People's Republic of China
| | - Yi Liu
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, and Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, and Shenzhen Research Institute of Shandong University, Jinan, Shandong, People's Republic of China
| | - Xiangxin Zhang
- Department of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, People's Republic of China
| | - Jun Shen
- Department of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, People's Republic of China
| | - Renjie Xu
- Department of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, People's Republic of China
| | - Yubo Liu
- Department of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, People's Republic of China
| | - Xiao Yu
- Department of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, People's Republic of China
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Soghli N, Qujeq D, Yousefi T, Soghli N. The regulatory functions of circular RNAs in osteosarcoma. Genomics 2020; 112:2845-2856. [DOI: 10.1016/j.ygeno.2020.03.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 02/06/2023]
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50
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Tu C, He J, Qi L, Ren X, Zhang C, Duan Z, Yang K, Wang W, Lu Q, Li Z. Emerging landscape of circular RNAs as biomarkers and pivotal regulators in osteosarcoma. J Cell Physiol 2020; 235:9037-9058. [PMID: 32452026 DOI: 10.1002/jcp.29754] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 12/13/2022]
Abstract
Osteosarcoma represents the most prevailing primary bone tumor and the third most common cancer in children and adolescents worldwide. Among noncoding RNAs, circular RNAs (circRNAs) refer to a unique class in the shape of a covalently closed continuous loop with neither 5' caps nor 3'-polyadenylated tails, which are generated through back-splicing. Recently, with the development of whole-genome and transcriptome sequencing technologies, a growing number of circRNAs have been found aberrantly expressed in multiple diseases, including osteosarcoma. circRNA are capable of various biological functions including miRNA sponge, mediating alternatives, regulating genes at posttranscriptional levels, and interacting with proteins, indicating a pivotal role of circRNA in cancer initiation, progression, chemoresistance, and immune response. Moreover, circRNAs have been thrust into the spotlight as potential biomarkers and therapeutic targets in osteosarcoma. Herein, we briefly summarize the origin and biogenesis of circRNA with current knowledge of circRNA in tumorigenesis of osteosarcoma, aiming to elucidate the specific role and clinical implication of circRNAs in osteosarcoma.
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Affiliation(s)
- Chao Tu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jieyu He
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Qi
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaolei Ren
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chenghao Zhang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhixi Duan
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Kexin Yang
- Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Wanchun Wang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiong Lu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhihong Li
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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