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Zhang X, Ma L, Wan L, Wang H, Wang Z. Circ_0003945: an emerging biomarker and therapeutic target for human diseases. Front Oncol 2024; 14:1275009. [PMID: 38711855 PMCID: PMC11070578 DOI: 10.3389/fonc.2024.1275009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 03/29/2024] [Indexed: 05/08/2024] Open
Abstract
Due to the rapid development of RNA sequencing techniques, a circular non-coding RNA (ncRNA) known as circular RNAs (circRNAs) has gradually come into focus. As a distinguished member of the circRNA family, circ_0003945 has garnered attention for its aberrant expression and biochemical functions in human diseases. Subsequent studies have revealed that circ_0003945 could regulate tumor cells proliferation, migration, invasion, apoptosis, autophagy, angiogenesis, drug resistance, and radio resistance through the molecular mechanism of competitive endogenous RNA (ceRNA) during tumorigenesis. The expression of circ_0003945 is frequently associated with some clinical parameters and implies a poorer prognosis in the majority of cancers. In non-malignant conditions, circ_0003945 also holds considerable importance in diseases pathogenesis. This review aims to recapitulate molecular mechanism of circ_0003945 and elucidates its potential as a diagnostic and therapeutic target in neoplasms and other diseases.
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Affiliation(s)
- Xiaofei Zhang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Ma
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Wan
- Department of Oncology, The Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Haoran Wang
- Division of Spine Surgery, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhaoxia Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Liu M, Lai M, Li D, Zhang R, Wang L, Peng W, Yang J, He W, Sheng Y, Xiao S, Nan A, Zeng X. Nucleus-localized circSLC39A5 suppresses hepatocellular carcinoma development by binding to STAT1 to regulate TDG transcription. Cancer Sci 2023; 114:3884-3899. [PMID: 37549641 PMCID: PMC10551608 DOI: 10.1111/cas.15906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/16/2023] [Accepted: 06/26/2023] [Indexed: 08/09/2023] Open
Abstract
Accumulating evidence indicates that circular RNAs (circRNAs) are inextricably linked to cancer development. However, the function and mechanism of nucleus-localized circRNAs in hepatocellular carcinoma (HCC) still require investigation. Here, qRT-PCR and receiver-operating characteristic curve were used to detect the expression and diagnostic potential of circSLC39A5 for HCC. The biological function of circSLC39A5 in HCC was investigated in vitro and in vivo. Nucleoplasmic separation assay, fluorescence in situ hybridization, RNA pulldown, RNA immunoprecipitation, the HDOCK Server, the NucleicNet Webserver, crosslinking-immunoprecipitation, MG132 treatment, and chromatin immunoprecipitation were utilized to explore the potential molecular mechanism of circSLC39A5 in HCC. The results showed that circSLC39A5 was downregulated in both HCC tissues and plasma and was associated with satellite nodules and lymph node metastasis/vascular invasion. CircSLC39A5 was stably expressed in plasma samples under different storage conditions, showing good diagnostic potential for HCC (AUC = 0.915). CircSLC39A5 inhibited proliferation, migration, and invasion, facilitated the apoptosis of HCC cells, and was associated with low expression of Ki67 and CD34. Remarkably, circSLC39A5 is mainly localized in the nucleus and binds to the transcription factor signal transducer and activator of transcription 1 (STAT1), affecting its stabilization and expression. STAT1 binds to the promoter of thymine DNA glycosylase (TDG). Overexpression of circSLC39A5 elevates TDG expression and reverses the increase of proliferating cell nuclear antigen (PCNA) expression and the overactive cell proliferation caused by TDG silencing. Our findings uncovered a novel plasma circRNA, circSLC39A5, which may be a potential circulating diagnostic marker for HCC, and the mechanism by which nucleus-localized circSLC39A5 exerts a transcriptional regulatory role in HCC by affecting STAT1/TDG/PCNA provides new insights into the mechanism of circRNAs.
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Affiliation(s)
- Meiliang Liu
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Mingshuang Lai
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Deyuan Li
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Ruirui Zhang
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
- Department of Toxicology, School of Public HealthGuangxi Medical UniversityNanningChina
| | - Lijun Wang
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Wenyi Peng
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
- Department of Toxicology, School of Public HealthGuangxi Medical UniversityNanningChina
| | - Jialei Yang
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Wanting He
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Yonghong Sheng
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Suyang Xiao
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
| | - Aruo Nan
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
- Department of Toxicology, School of Public HealthGuangxi Medical UniversityNanningChina
| | - Xiaoyun Zeng
- Department of Epidemiology and Health Statistics, School of Public HealthGuangxi Medical UniversityNanningChina
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanningChina
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor (Guangxi Medical University), Ministry of EducationNanningChina
- Guangxi Key Laboratory of Early Prevention and Treatment for Regional High Frequency TumorNanningChina
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Rao G, Peng X, Tian Y, Fu X, Zhang Y. Circular RNAs in hepatocellular carcinoma: biogenesis, function, and pathology. Front Genet 2023; 14:1106665. [PMID: 37485335 PMCID: PMC10361733 DOI: 10.3389/fgene.2023.1106665] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 06/16/2023] [Indexed: 07/25/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common causes of cancer-related death worldwide. Both genetic and environmental factors through a multitude of underlying molecular mechanisms participate in the pathogenesis of HCC. Recently, numerous studies have shown that circular RNAs (circRNAs), an emerging class of non-coding RNAs characterized by the presence of covalent bonds linking 3' and 5' ends, play an important role in the initiation and progression of cancers, including HCC. In this review, we outline the current status of the field of circRNAs, with an emphasis on the functions and mechanisms of circRNAs in HCC and its microenvironment. We also summarize and discuss recent advances of circRNAs as biomarkers and therapeutic targets. These efforts are anticipated to throw new insights into future perspectives about circRNAs in basic, translational and clinical research, eventually advancing the diagnosis, prevention and treatment of HCC.
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Affiliation(s)
- Guocheng Rao
- Department of Endocrinology and Metabolism, Cancer Center West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Endocrinology and Metabolism, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Xi Peng
- Department of Endocrinology and Metabolism, Cancer Center West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Endocrinology and Metabolism, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Yan Tian
- Department of Endocrinology and Metabolism, Cancer Center West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xianghui Fu
- Department of Endocrinology and Metabolism, Cancer Center West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Endocrinology and Metabolism, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Yuwei Zhang
- Department of Endocrinology and Metabolism, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
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Jiang Y, Yu J, Zhu T, Bu J, Hu Y, Liu Y, Zhu X, Gu X. Involvement of FAM83 Family Proteins in the Development of Solid Tumors: An Update Review. J Cancer 2023; 14:1888-1903. [PMID: 37476189 PMCID: PMC10355199 DOI: 10.7150/jca.83420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 06/16/2023] [Indexed: 07/22/2023] Open
Abstract
FAM83 family members are a group of proteins that have been implicated in various solid tumors. In this updated review, we mainly focus on the cellular localization, molecular composition, and biological function of FAM83 family proteins in solid tumors. We discussed the factors that regulate abnormal protein expression and alterations in the functional activities of solid tumor cells (including non-coding microRNAs and protein modifiers) and potential mechanisms of tumorigenesis (including the MAPK, WNT, and TGF-β signaling pathways). Further, we highlighted the application of FAM83 family proteins in the diagnoses and treatment of different cancers, such as breast, lung, liver, and ovarian cancers from two aspects: molecular marker diagnosis and tumor drug resistance. We described the overexpression of FAM83 genes in various human malignant tumor cells and its relationship with tumor proliferation, migration, invasion, transformation, and drug resistance. Moreover, we explored the prospects and challenges of using tumor treatments based on the FAM83 proteins. Overall, we provide a theoretical basis for harnessing FAM83 family proteins as novel targets in cancer treatment. We believe that this review opens up open new directions for solid tumor treatment in clinical practice.
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Affiliation(s)
- Yi Jiang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning province, P.R. China
| | - Jiahui Yu
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Tong Zhu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning province, P.R. China
| | - Jiawen Bu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning province, P.R. China
| | - Yueting Hu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning province, P.R. China
| | - Yang Liu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning province, P.R. China
| | - Xudong Zhu
- Department of General Surgery, Cancer Hospital of China Medical University, Cancer Hospital of Dalian University of Technology, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Xi Gu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning province, P.R. China
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Zhuo H, Miao S, Jin Z, Zhu D, Xu Z, Sun D, Ji J, Tan Z. Metformin Suppresses Hepatocellular Carcinoma through Regulating Alternative Splicing of LGR4. JOURNAL OF ONCOLOGY 2022; 2022:1774095. [PMID: 36385965 PMCID: PMC9652085 DOI: 10.1155/2022/1774095] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/01/2022] [Indexed: 07/26/2023]
Abstract
METHODS First, the expression of LGR4 in HCC tumor tissues and cell lines was detected by western blotting and immunofluorescence. The ability of cell proliferation, migration, and invasion was detected with CCK8, wound-healing, and transwell assays when overexpressing LGR4 or treating with metformin. The β-catenin expression was detected by immunofluorescence. In order to investigate novel AS-associated LGR4, we discarded LGR4 isoforms from GSO databases. We used siRNA to knock down the specific isoform to check the cell proliferation, migration, and invasion when treated with metformin. RESULTS The level of LGR4 expression was higher in HCC cell lines and tumor tissues. The HCC cell proliferation, migration, and invasion were increased when overexpressing LGR4, which could be reduced by metformin treatment. The GEO database (GSE190076) showed that LGR4 had switching properties in HCC cell lines treated with metformin. We used siRNA to knock down the specific isoform, and the result showed that the specific isoform siRNA could promote the inhibition of cell invasion caused by metformin treatment. CONCLUSIONS LGR4 could promote the ability of cell proliferation, migration, and invasion in HCC, which could be reduced by metformin through alternative splicing.
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Affiliation(s)
- Han Zhuo
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shuying Miao
- Department of Pathology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Zhenquan Jin
- The First Clinical Medical College of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Deming Zhu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhenggang Xu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dongwei Sun
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jie Ji
- Jiangsu Breast Disease Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhongming Tan
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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