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Zhan J, Li Z, Lin C, Wang D, Yu L, Xiao X. The role of circRNAs in regulation of drug resistance in ovarian cancer. Front Genet 2023; 14:1320185. [PMID: 38152652 PMCID: PMC10751324 DOI: 10.3389/fgene.2023.1320185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/04/2023] [Indexed: 12/29/2023] Open
Abstract
Ovarian cancer is one of the female reproductive system tumors. Chemotherapy is used for advanced ovarian cancer patients; however, drug resistance is a pivotal cause of chemotherapeutic failure. Hence, it is critical to explore the molecular mechanisms of drug resistance of ovarian cancer cells and to ameliorate chemoresistance. Noncoding RNAs (ncRNAs) have been identified to critically participate in drug sensitivity in a variety of human cancers, including ovarian cancer. Among ncRNAs, circRNAs sponge miRNAs and prevent miRNAs from regulation of their target mRNAs. CircRNAs can interact with DNA or proteins to modulate gene expression. In this review, we briefly describe the biological functions of circRNAs in the development and progression of ovarian cancer. Moreover, we discuss the underneath regulatory molecular mechanisms of circRNAs on governing drug resistance in ovarian cancer. Furthermore, we mention the novel strategies to overcome drug resistance via targeting circRNAs in ovarian cancer. Due to that circRNAs play a key role in modulation of drug resistance in ovarian cancer, targeting circRNAs could be a novel approach for attenuation of chemoresistance in ovarian cancer.
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Affiliation(s)
- Jun Zhan
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Zhiyi Li
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Changsheng Lin
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Dingding Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Lei Yu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Xue Xiao
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
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Huang Y, Zhang C, Xiong J, Ren H. Emerging important roles of circRNAs in human cancer and other diseases. Genes Dis 2021; 8:412-423. [PMID: 34179306 PMCID: PMC8209354 DOI: 10.1016/j.gendis.2020.07.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/08/2020] [Accepted: 07/27/2020] [Indexed: 12/14/2022] Open
Abstract
CircRNAs are a large class of endogenous single-stranded RNA that is different from other linear RNA, which are produced by back-splicing and fusion of either exons, introns, or both exon-intron into covalently closed loops. CircRNAs are found in almost all living organisms and have emerged as potentially important players effecting on all life activities. It was characterized by stable structure, resistant to RNA degradation, highly abundance and conservation and tissue-specific expression. Early circRNAs were ignored as a by-product of meaningless abnormally cut RNA and had little biological function. Currently, circRNAs have become a research hotspot due to its special characteristics. CircRNAs could function as miRNA sponges, interfere with splicing and bind to protein to regulate the expression of parental genes and so on. In recent years, an increasing number of studies have revealed that circRNAs are closely related to a series of physiological and pathological processes. Additionally, circRNAs play an important role in the occurrence and development of a variety of diseases, suggesting circRNAs may be as novel indicators or biomarkers for cancer and other diseases with which they are associated. In this article, we review the biogenesis, biological functions of circRNAs and recent advances in circRNAs research in human diseases. Results will provide new insights on the roles and new ideas of circRNAs for the diagnosis and treatment of diseases and possible directions and approach for future circRNA applications.
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Affiliation(s)
- Yong Huang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Cai Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Jianli Xiong
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Hongtao Ren
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
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Liu D, Fang L. Current research on circular RNAs and their potential clinical implications in breast cancer. Cancer Biol Med 2021; 18:j.issn.2095-3941.2020.0275. [PMID: 34018386 PMCID: PMC8330541 DOI: 10.20892/j.issn.2095-3941.2020.0275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/26/2020] [Indexed: 02/06/2023] Open
Abstract
Breast cancer (BC) is one of the most common cancers and the leading causes of death among women worldwide, and its morbidity rate is growing. Discovery of novel biomarkers is necessary for early BC detection, treatment, and prognostication. Circular RNAs (circRNAs), a novel type of endogenous non-coding RNAs with covalently closed continuous loops, have been found to have a crucial role in tumorigenesis. Studies have demonstrated that circRNAs are aberrantly expressed in the tumor tissues and plasma of patients with BC, and they modulate gene expression affecting the proliferation, metastasis, and chemoresistance of BC by specifically binding and regulating the expression of microRNAs (miRNAs). Therefore, circRNAs can be used as novel potential diagnostic and prognostic markers, and therapeutic targets for BC. This article summarizes the properties, functions, and regulatory mechanisms of circRNAs, particularly current research on their association with BC proliferation, metastasis, and chemoresistance.
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Affiliation(s)
- Diya Liu
- Department of Thyroid and Breast Diseases, Shanghai Tenth People’s Hospital, Shanghai 200070, China
| | - Lin Fang
- Department of Thyroid and Breast Diseases, Shanghai Tenth People’s Hospital, Shanghai 200070, China
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Tang L, Jiang B, Zhu H, Gao T, Zhou Y, Gong F, He R, Xie L, Li Y. The Biogenesis and Functions of circRNAs and Their Roles in Breast Cancer. Front Oncol 2021; 11:605988. [PMID: 33718157 PMCID: PMC7947672 DOI: 10.3389/fonc.2021.605988] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 01/14/2021] [Indexed: 12/12/2022] Open
Abstract
Recent statistics show that breast cancer is among the most frequent cancers in clinical practice. It is also the second-leading cause of cancer-related deaths among women worldwide. CircRNAs are a new class of endogenous regulatory RNA molecules whose 5’ end and 3’ end are connected together to form a covalently closed single-stranded loop by back-splicing. CircRNAs present the advantages of disease-specific expression and excellent expression stability, and they can modulate gene expression at posttranscriptional and transcriptional levels. CircRNAs are abnormally expressed in multiple cancers, such as breast cancer, and drive the initiation and progression of cancer. In this review, we describe current knowledge about the functions of circRNAs and generalize their roles in various aspects of breast cancer, including cell proliferation, cell cycle, apoptosis, invasion and metastasis, autophagy, angiogenesis, drug resistance, and tumor immunity, and their prognostic and diagnostic value. This may add to a better understanding of the functions and roles of circRNAs in breast cancer, which may become new diagnostic and predictive biomarkers of breast cancer.
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Affiliation(s)
- Liting Tang
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Baohong Jiang
- Department of Pharmacy, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Hongbo Zhu
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Ting Gao
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Yu Zhou
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Fuqiang Gong
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Rongfang He
- Department of Pathology The First Affiliated Hospital, University of South China, Hengyang, China
| | - Liming Xie
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Yuehua Li
- Department of Medical Oncology, The First Affiliated Hospital, University of South China, Hengyang, China.,Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, China
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