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Farhadi E, Khomeijani-Farahani M, Nikbakhsh R, Azizan A, Soltani S, Barekati H, Mahmoudi M. The potential role of circular RNAs in regulating p53 in different types of cancers. Pathol Res Pract 2024; 261:155488. [PMID: 39088876 DOI: 10.1016/j.prp.2024.155488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 07/20/2024] [Accepted: 07/24/2024] [Indexed: 08/03/2024]
Abstract
P53 tumor suppressor is a major regulator of various cellular processes and functions. It has been reported that mutation or inactivation of p53 plays a crucial role in tumorigenesis in different types of cancers. Circular RNAs (circRNAs) are single-stranded non-coding RNAs that have significant post-transcriptional effects on the regulation of gene expression in various ways. These molecules can alter the expression and function of multiple genes and proteins. In the present study, we aimed to review circRNAs that regulate the expression, function, and stability of p53 and the possible interactions between these molecules and p53. Considering the importance of p53 in cancer and the network between p53 and circRNAs, future clinical trials targeting these circRNAs as therapeutic agents deserve worthy of attention.
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Affiliation(s)
- Elham Farhadi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Chronic Inflammatory Diseases, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohammadreza Khomeijani-Farahani
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Students Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Rambod Nikbakhsh
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Biology, Faculty of Sciences, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Amin Azizan
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Chronic Inflammatory Diseases, Tehran University of Medical Sciences, Tehran, Iran
| | - Samaneh Soltani
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Barekati
- School of Nursing & Midwifery, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Mahmoudi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Chronic Inflammatory Diseases, Tehran University of Medical Sciences, Tehran, Iran.
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Jin Z, Xu W, Yu K, Luo C, Luo X, Lian T, Liu C. The novel circFKBP8/miR-432-5p/E2F7 cascade functions as a regulatory network in breast cancer. Hereditas 2024; 161:27. [PMID: 39192374 DOI: 10.1186/s41065-024-00331-1] [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: 12/18/2023] [Accepted: 08/12/2024] [Indexed: 08/29/2024] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) are capable of affecting breast cancer (BC) development. However, the role and underneath mechanism of circFKBP8 (also known as hsa_circ_0000915) in BC remain largely unknown. METHODS Expression analyses were performed using quantitative real-time polymerase chain reaction (qRT-PCR), western blot, and immunohistochemistry (IHC) assays. Effects on cell functional phenotypes were determined by assessing cell proliferation, migratory capacity, invasion, and stemness in vitro. The relationship between microRNA (miR)-432-5p and circFKBP8 or E2F transcription factor 7 (E2F7) was examined by RNA pull-down, dual-luciferase reporter, and RNA immunoprecipitation (RIP) assays. Xenograft assays were used to identify the function of circFKBP8 in vivo. RESULTS CircFKBP8 was presented at high levels in BC tissues and cells. High circFKBP8 expression was associated with worse overall survival in BC patients. CircFKBP8 suppression inhibited BC cell proliferation, migratory capacity, invasion and stemness in vitro. CircFKBP8 suppression blocked xenograft tumor growth in vivo. Mechanistically, circFKBP8 functioned as a miR-432-5p sponge to modulate E2F7 expression. CircFKBP8 modulated BC cell malignant behaviors by miR-432-5p, and miR-432-5p affected these cell phenotypes through E2F7. CONCLUSION Our observations prove that circFKBP8 promotes BC malignant phenotypes through the miR-432-5p/E2F7 cascade, offering a promising therapeutic and prognostic target for BC.
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Affiliation(s)
- Zhongkui Jin
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China
| | - Wang Xu
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China
| | - Kunlin Yu
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China
| | - Cailu Luo
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China
| | - Xiaodan Luo
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China
| | - Tao Lian
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China
| | - Changshan Liu
- Department of Breast Surgery, Yichun People's Hospital & The Affiliated Yichun Hospital of Nanchang University, No.1061 Jinxiu avenue, Yiyang New District 336000, Yichun, Jiangxi, China.
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Zou Y, Wang Y, Yao Y, Wu Y, Lv C, Yin T. Platelet-derived circFAM13B associated with anti-platelet responsiveness of ticagrelor in patients with acute coronary syndrome. Thromb J 2024; 22:53. [PMID: 38907258 PMCID: PMC11191304 DOI: 10.1186/s12959-024-00620-9] [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: 04/09/2024] [Accepted: 06/10/2024] [Indexed: 06/23/2024] Open
Abstract
BACKGROUND Platelet is enriched with Circular RNAs (circRNAs), with circFAM13B rank among the 10 most abundant circRNAs in platelets. The aim of the present study was to evaluate the predictive value of platelet-derived circFAM13B for the antiplatelet responsiveness and efficacy of ticagrelor in patients with acute coronary syndrome (ACS). METHODS Consecutive ACS patients treated with ticagrelor were enrolled, and the antiplatelet responsiveness of 3 days of ticagrelor maintenance treatment was assessed by measuring the adenosine diphosphate (ADP)-induced platelet inhibition rate (ADP%) using thromboelastography. The expression of circFAM13B in the patients' platelets was analyzed by quantitative real-time polymerase chain reaction. The correlation between circFAM13B expression and ticagrelor antiplatelet responsiveness, as well as the independent contribution of circFAM13B to the composite of adverse ischemic events during a follow-up period of at least 12 months was evaluated. RESULTS A total of 129 eligible ACS patients treated with ticagrelor were enrolled in the study. A negative correlation was found between the expression of circFAM13B and the ADP% value (r = -0.41, P < 0.001). Patients with ADP% ≥ 76% had a significantly lower level of circFAM13B compared to those with ADP% < 76% (adjusted P = 0.009). Receiver operating characteristic curve analysis demonstrated that combining circFAM13B expression > 1.05 with clinical risk factors could effectively predict the risk of adverse ischemic events (AUC = 0.81, 95% CI: 0.69 to 0.92, P < 0.001). Kaplan-Meier survival analysis showed that patients with circFAM13B > 1.05 had a significantly higher risk of adverse ischemic events compared to those with circFAM13B ≤ 1.05 (P = 0.003). Multivariate logistic hazard analysis identified circFAM13B > 1.05 as an independent risk factor for adverse ischemic events in in ticagrelor-treated ACS patients (adjusted OR: 5.60, 95% CI: 1.69-18.50; P = 0.005). CONCLUSIONS Platelet-derived circFAM13B could be utilized for predicting the antiplatelet responsiveness and efficacy of ticagrelor in patients with ACS.
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Affiliation(s)
- Yuting Zou
- Institute of Geriatrics, National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General Hospital, Beijing, China
- Senior Department of Cardiology, The 6th Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yuyan Wang
- Institute of Geriatrics, National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yanzhu Yao
- Institute of Geriatrics, National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yangxun Wu
- Institute of Geriatrics, National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Chao Lv
- Institute of Geriatrics, National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Tong Yin
- Institute of Geriatrics, National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General Hospital, Beijing, China.
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Wang Z, Zhang H, Li F, Huang C. Knockdown of RNA-binding protein IMP3 suppresses oral squamous cell carcinoma proliferation by destabilizing E2F5 transcript. Aging (Albany NY) 2024; 16:1897-1910. [PMID: 38271139 PMCID: PMC10866398 DOI: 10.18632/aging.205466] [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: 03/30/2022] [Accepted: 12/16/2023] [Indexed: 01/27/2024]
Abstract
The expression level of RNA-binding proteins (RBPs) is dysregulated in oral squamous cell carcinoma (OSCC) and other types of cancer. Among the RBPs, IMP3 is involved in the progression of OSCC. However, the regulation of mRNA fate by IMP3 in OSCC remains less understood. We analyzed the expression level of IMP3 and E2F5 in OSCC tissues and cell lines by immunohistochemistry, qRT-PCR and Western blot. Subsequently, to further investigate the effect of IMP3 on E2F5 expression, we used siRNAs to silence IMP3 expression in OSCC cell lines SCC-25 and SCC-4. The binding site of E2F5 mRNA and IMP3 was confirmed by RNA immunoprecipitation (RIP). Finally, the function of IMP3 and E2F5 was investigated in viro and in xenograft mouse models. Here we report a positive correlation between IMP3 and E2F5 expression in OSCC, which are involved in cell proliferation and cell cycle. Mechanistically, E2F5 mRNA is bound by IMP3 protein, and silencing it leads to a shortened mRNA half-life and reduced protein expression. Also, knockdown of IMP3 inhibited allograft tumor progression in vivo. These studies reveal the molecular mechanism by which IMP3 regulates E2F5 mRNA stability and identify IMP3/E2F5 as a potential therapeutic target in OSCC.
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Affiliation(s)
- Zhenzhen Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Huahua Zhang
- Medical Research and Experimental Center, Medical College, Yan’an University, Yan’an, Shaanxi, China
| | - Fang Li
- Department of Cell Biology and Genetics/Key Laboratory of Environment and Genes Related to Diseases, School of Basic Medical Sciences, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
| | - Chen Huang
- Department of Cell Biology and Genetics/Key Laboratory of Environment and Genes Related to Diseases, School of Basic Medical Sciences, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
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Wu S, Tang T, Zhou H, Huang J, Kang X, Zhang J. Hsa_circ_0119412 is a tumor promoter in hepatocellular carcinoma by inhibiting miR-526b-5p to upregulate STMN1. Cancer Biol Ther 2023; 24:2256951. [PMID: 37773733 PMCID: PMC10543360 DOI: 10.1080/15384047.2023.2256951] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 09/05/2023] [Indexed: 10/01/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is always deemed a deadly malignancy worldwide. Non-coding RNAs, including circRNAs, are becoming more widely recognized as essential regulators of the malignant development of HCC. Thus, we elaborated the regulating role of hsa_circ_0119412 in HCC advancement. The qRT-PCR was done to estimate the expressions of hsa_circ_0119412, miR-526b-5p, and Stathmin 1 (STMN1) in HCC (clinical samples and cell lines), and immunoblotting was used to detect STMN1 protein level in HCC cell lines. The stability of the circRNA was checked by processing with ribonuclease R. The proliferative potential of HCC cells was examined via the CCK-8 assay and the migratory potential by the wound healing assay. Immunoblotting was done to examine Bax and Bcl-2 (apoptosis-related proteins). Luciferase and RIP assays were employed to establish the direct interactions among miR-526b-5p and hsa_circ 0119412/STMN1. In vivo tumor growth was measured by doing a xenograft tumor experiment. In the tissues of HCC patients and cell lines derived from HCC cells, hsa_circ_0119412 was distinctly over-expressed. Knocking down hsa_circ_0119412 impeded proliferation and migration while inducing apoptosis in HCC cells. Moreover, silencing hsa_circ_0119412 diminished tumor weight and volume in vivo. Interestingly, miR-526b-5p inhibition partially restored the anti-tumor effects of silencing hsa_circ_0119412. STMN1 expression was also abundant in HCC, suggesting that it play a tumor-promoting role. Mechanistically, hsa_circ_0119412 sponged miR-526b-5p, resulting in STMN1 upregulation and thus facilitating the progression of HCC. In conclusion, this study reveals that hsa_circ_0119412 knockdown attenuates the progression of HCC by targeting miR-526b-5p/STMN1 axis.
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Affiliation(s)
- Song Wu
- Department of Hepatobiliary Vascular Surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Tao Tang
- Department of Hepatobiliary Vascular Surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Hongchi Zhou
- Department of Hepatobiliary Vascular Surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Jing Huang
- Department of Hepatobiliary Vascular Surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Xiaoliang Kang
- Department of Hepatobiliary Vascular Surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Junli Zhang
- Department of Pathology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
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Sheng J, Luo Y, Lv E, Liang H, Tao H, Yu C, Rao D, Sun M, Xia L, Huang W. LINC01980 induced by TGF-beta promotes hepatocellular carcinoma metastasis via miR-376b-5p/E2F5 axis. Cell Signal 2023; 112:110923. [PMID: 37827344 DOI: 10.1016/j.cellsig.2023.110923] [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: 07/20/2023] [Revised: 09/26/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most aggressive human malignancies worldwide. However, the molecular mechanism of HCC metastasis is largely unknown. Long non-coding RNA (lncRNA) plays a key role in gene regulation, and dysregulation of lncRNA is critical to cancer metastasis. LINC01980 has been reported in ESCC recently, but the mechanism underlying its function in HCC is still unknown. In this study, we found that LINC01980 was upregulated and associated with notably poor overall survival in HCC patients. Functionally, LINC01980 played a carcinogenic role and promoted HCC metastasis. Mechanically, LINC01980 enhanced the E2F5 expression via competitively binding miR-376b-5p, thereby inducing epithelial-mesenchymal transition and promoting HCC cells migration and invasion. In addition, LINC01980-mediated HCC cells metastasis was dependent on E2F5. What's more, TGF-β activated LINC01980 transcription through the canonical TGF-β/SMAD signaling pathway in HCC. In conclusion, LINC01980, activated by the canonical TGF-β/SMAD pathway, promoted HCC metastasis via miR-376b-5p/E2F5 axis. Therefore, LINC01980 might be a potential prognostic biomarker and therapeutic target of HCC.
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Affiliation(s)
- Jiaqi Sheng
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China; Key Laboratory of Hubei Province for Digestive System Disease, Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yiming Luo
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China
| | - Enjun Lv
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China
| | - Huifang Liang
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China
| | - Haisu Tao
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China
| | - Chengpeng Yu
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China
| | - Dean Rao
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China
| | - Mengyu Sun
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Limin Xia
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Wenjie Huang
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei 430030, China.
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Tang S, Kong P, Li Q, Tang X. Circ_0071589 contributes to growth, angiogenesis, and metastasis of colorectal cancer through regulating miR-296-5p/EN2 axis. J Biochem Mol Toxicol 2023; 37:e23509. [PMID: 37670439 DOI: 10.1002/jbt.23509] [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: 08/01/2022] [Revised: 02/01/2023] [Accepted: 08/17/2023] [Indexed: 09/07/2023]
Abstract
To explore the function and regulation mechanism of circ_0071589 in colorectal cancer (CRC). The expression levels of circ_0071589, microRNA-296-5p (miR-296-5p), and Engrailed-2 (EN2) were detected by quantitative real-time polymerase chain reaction (qRT-PCR). Western blot was performed to check the protein levels of EN2 and apoptosis-related proteins. Cell colony formation and 5-Ethynyl-29-deoxyuridine (EdU) assay were used to exhibit cell proliferation. Cell apoptosis was shown by flow cytometry. Tube formation assay manifested the angiogenesis ability of CRC cells. Transwell assay demonstrated cell migration and invasion. The interaction between miR-296-5p and circ_0071589 or EN2 was identified by dual-luciferase reporter assay. The effect of circ_0071589 on tumor formation was demonstrated by in vivo tumor formation experiments. Immunohistochemical (IHC) assay was used to detect the positive cell rate of Ki67 in tumor tissue. Circ_0071589 was upregulated in CRC tissue and cells. Circ_0071589 knockdown repressed CRC cells proliferation, angiogenesis, migration, invasion, and promoted cell apoptosis. MiR-296-5p was downregulated in CRC tissue and cells. And miR-296-5p inhibitor could reverse the malignant phenotypes and angiogenesis inhibition of CRC cells caused by circ_0071589 knockdown. Additionally, miR-296-5p decreased CRC cell colony formation, EdU-positive cells, angiogenesis, and increased cell apoptosis through reducing the expression level of EN2. Finally, circ_0071589 silencing inhibited tumor formation in vivo. Circ_0071589 upregulated EN2 expression through sponging miR-296-5p, thereby promoting the malignant phenotype and angiogenesis of CRC cells, which provided a new target for the treatment of CRC.
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Affiliation(s)
- Shiyu Tang
- The Second Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Sichuan, China
| | - Pengfei Kong
- Department Of Anorectal, Intergrated Western And Chinese Colorectal And Anal Surgery, Affiliated Hospital Of North Sichuan Medical College, Sichuan, China
| | - Qian Li
- North Sichuan Medical College, Sicchuan, China
| | - Xuegui Tang
- Department Of Anorectal, Intergrated Western And Chinese Colorectal And Anal Surgery, Affiliated Hospital Of North Sichuan Medical College, Sichuan, China
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Han Y, Zheng Y, You J, Han Y, Lu X, Wang X, Shi C, Zhu W. Hsa_circ_0001535 inhibits the proliferation and migration of ovarian cancer by sponging miR-593-3p, upregulating PTEN expression. Clin Transl Oncol 2023; 25:2901-2910. [PMID: 37000289 DOI: 10.1007/s12094-023-03152-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/08/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND Hsa_circ_0001535 is involved in biological processes in various tumors. However, the biological effects and related mechanism of hsa_circ_0001535 in ovarian cancer (OC) is unclear. This work is aimed to probe the biological function and underlying mechanism of hsa_circ_0001535 in OC, especially sponged with mi-RNA, require further elucidation. METHODS Hsa_circ_0001535 expression in OC tissues and cell lines were examined by qRT-PCR. Hsa_circ_0001535 overexpression model was constructed by lentivirus-mediated transfection in two OC cell lines, and the biological functions of hsa_circ_0001535 were evaluated by CCK-8, transwell assay and Western blot. Dual luciferase reporter gene assay was respectively used to explore the relationship between hsa_circ_0001535 and miR-593-3p, as well as miR-593-3p and PTEN. The expression of miR-593-3p and PTEN were detected by qRT-PCR in two OC cell lines and OC tissues. RESULTS Hsa_circ_0001535 was down-regulated in OC tissues and cell lines. Hsa_circ_0001535 overexpression inhibited proliferation, migration and EMT marker expression in OC cells. Of interest, hsa_circ_0001535 targeted miR-593-3p and reduced its RNA level in OC cells. PTEN was a target gene of miR-593-3p, which was up-regulated by inhibiting miR-593-3p in OC cells. Furthermore, miR-593-3p mimic treatment reversed the up-regulation of PTEN by hsa_circ_0001535 overexpression in OC cells. CONCLUSIONS The above results showed that hsa_circ_0001535 acted as a molecular sponge for miR-593-3p to repress miR-593-3p expression, and promoted the expression of PTEN, thus inhibited proliferation and migration of OC cells. Our research provides a potential therapeutic target for ovarian cancer patients.
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Affiliation(s)
- Yuwen Han
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Soochow University, No.1055 Sanxiang Road, Suzhou, 215004, Jiangsu, People's Republic of China
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yanli Zheng
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Jun You
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yun Han
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xiaoyan Lu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xuan Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Chao Shi
- Department of Pathology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Weipei Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Soochow University, No.1055 Sanxiang Road, Suzhou, 215004, Jiangsu, People's Republic of China.
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Martinez de Estibariz I, Jakjimovska A, Illarregi U, Martin-Guerrero I, Gutiérrez-Camino A, Lopez-Lopez E, Bilbao-Aldaiturriaga N. The Role of the Dysregulation of Long Non-Coding and Circular RNA Expression in Medulloblastoma: A Systematic Review. Cancers (Basel) 2023; 15:4686. [PMID: 37835380 PMCID: PMC10571996 DOI: 10.3390/cancers15194686] [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: 07/19/2023] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 10/15/2023] Open
Abstract
Medulloblastoma (MB) is the most common malignant brain tumor in childhood. Although recent multi-omic studies have led to advances in MB classification, there is still room for improvement with regard to treatment response and survival. Therefore, identification of new and less invasive biomarkers is needed to refine the diagnostic process and to develop more personalized treatment strategies. In this context, non-coding RNAs (ncRNAs) could be useful biomarkers for MB. In this article, we reviewed the role of two types of ncRNAs, long non-coding (lncRNAs) and circular RNAs (circRNAs), as biomarkers for the diagnosis, subgroup classification, and prognosis of MB. We also reviewed potential candidates with specific functions and mechanisms of action in the disease. We performed a search in PubMed and Scopus using the terms ("long non coding RNAs" OR "lncRNAs") and ("circular RNAs" OR "circRNAs") AND "medulloblastoma" to identify biomarker discovery or functional studies evaluating the effects of these ncRNAs in MB. A total of 26 articles met the inclusion criteria. Among the lncRNAs, the tumorigenic effects of the upregulated lnc-IRX3-80 and lnc-LRRC47-78 were the most studied in MB. Among the circRNAs, the upregulation of circSKA3 and its functional impact in MB cell lines were the most consistent results, so this circRNA could be considered a potential biomarker in MB. Additional validation is required for many deregulated lncRNAs and circRNAs; therefore, further studies are warranted.
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Affiliation(s)
- Ivan Martinez de Estibariz
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; (I.M.d.E.); (U.I.); (I.M.-G.)
| | - Anastasija Jakjimovska
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain;
| | - Unai Illarregi
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; (I.M.d.E.); (U.I.); (I.M.-G.)
| | - Idoia Martin-Guerrero
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; (I.M.d.E.); (U.I.); (I.M.-G.)
- Pediatric Oncology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain;
| | - Angela Gutiérrez-Camino
- Pediatric Oncology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain;
| | - Elixabet Lopez-Lopez
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain;
- Pediatric Oncology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain;
| | - Nerea Bilbao-Aldaiturriaga
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain;
- Pediatric Oncology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain;
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10
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Circular RNAs in Parkinson's Disease: Reliable Biological Markers and Targets for Rehabilitation. Mol Neurobiol 2023; 60:3261-3276. [PMID: 36840847 DOI: 10.1007/s12035-023-03268-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/14/2023] [Indexed: 02/26/2023]
Abstract
In clinical practice, the underlying pathogenesis of Parkinson's disease (PD) remains unknown. Circular RNAs (circRNAs) have good biological properties and can be used as biological marker. Rehabilitation as a third treatment alongside drug and surgery has been shown to be clinically effective, but biomarkers of rehabilitation efficiency at genetic level is still lacking. In this study, we identified differentially expressed circRNAs in peripheral blood exosomes between PD patients and health controls (HCs) and determined whether these circRNAs changed after rehabilitation, to explore the competing RNA networks and epigenetic mechanisms affected. We found that there were 558 upregulated and 609 downregulated circRNAs in PD patients compared to HCs, 3398 upregulated and 479 downregulated circRNAs in PD patients after rehabilitation compared to them before rehabilitation, along with 3721 upregulated and 635 downregulated circRNAs in PD patients after rehabilitation compared to HCs. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that differentially expressed circRNAs may affect the stability of the cellular actin backbone and synaptic structure by influencing the aggregation of α-synuclein (a-syn). We selected two circRNAs overexpressed in PD patients for validation (hsa_circ_0001535 and hsa_circ_0000437); the results revealed that their expression levels were all reduced to varying degrees (p < 0.05) after rehabilitation. After network analysis, we believe that hsa_circ_0001535 may be related to the aggregation of a-syn, while hsa_circ_0000437 may act on hsa-let-7b-5p or hsa-let-7c-5p through sponge effect to cause inflammatory response. Our findings suggest that rehabilitation can mitigate the pathological process of PD by epigenetic means.
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11
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Shi Q, Li S, Lyu Q, Zhang S, Bai Y, Ma J. Hypoxia Inhibits Cell Cycle Progression and Cell Proliferation in Brain Microvascular Endothelial Cells via the miR-212-3p/MCM2 Axis. Int J Mol Sci 2023; 24:ijms24032788. [PMID: 36769104 PMCID: PMC9917047 DOI: 10.3390/ijms24032788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/24/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Hypoxia impairs blood-brain barrier (BBB) structure and function, causing pathophysiological changes in the context of stroke and high-altitude brain edema. Brain microvascular endothelial cells (BMECs) are major structural and functional elements of the BBB, and their exact role in hypoxia remains unknown. Here, we first deciphered the molecular events that occur in BMECs under 24 h hypoxia by whole-transcriptome sequencing assay. We found that hypoxia inhibited BMEC cell cycle progression and proliferation and downregulated minichromosome maintenance complex component 2 (Mcm2) expression. Mcm2 overexpression attenuated the inhibition of cell cycle progression and proliferation caused by hypoxia. Then, we predicted the upstream miRNAs of MCM2 through TargetScan and miRanDa and selected miR-212-3p, whose expression was significantly increased under hypoxia. Moreover, the miR-212-3p inhibitor attenuated the inhibition of cell cycle progression and cell proliferation caused by hypoxia by regulating MCM2. Taken together, these results suggest that the miR-212-3p/MCM2 axis plays an important role in BMECs under hypoxia and provide a potential target for the treatment of BBB disorder-related cerebrovascular disease.
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12
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Liu F, Qu R, Yang L, Shi G, Hao S, Hu C. Circular RNA Controls Tumor Occurrence and Development via Cell Cycle Regulation. Onco Targets Ther 2022; 15:993-1009. [PMID: 36134387 PMCID: PMC9484569 DOI: 10.2147/ott.s371629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/25/2022] [Indexed: 01/09/2023] Open
Abstract
Circular RNAs (circRNAs) participate in the occurrence and development of various diseases through different mechanisms, such as by acting as a microRNA (miRNA) sponge, interacting with RNA-binding proteins, and regulating gene transcription and protein translation. For example, the abnormal expression of specific circRNAs in tumor cells can alter key regulatory factors and the cell cycle network, resulting in cell cycle disorders and the development and metastasis of tumors. Here, we summarize the mechanisms involved in the circRNA-mediated processes that lead to uncontrolled cell cycle and tumor cell proliferation. Extensive studies investigating the abnormal expression of circRNAs in different cancer types have been conducted. The unique characteristics of circRNAs and their ability to regulate the cell cycle through diverse mechanisms is extremely valuable in tumor diagnosis, treatment, and prognosis. Our review may assist in further understanding the circRNA-mediated regulation of the cell cycle in tumors and provide insights for research on circRNA-based therapeutic strategies and biological diagnosis for cancer.
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Affiliation(s)
- Fang Liu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Rongfeng Qu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Limin Yang
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Guang Shi
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Shuhong Hao
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Chunmei Hu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
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13
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Shen D, Zhao H, Zeng P, Ge M, Shrestha S, Zhao W. Circular RNA circ_0001459 accelerates hepatocellular carcinoma progression via the miR-6165/IGF1R axis. Ann N Y Acad Sci 2022; 1512:46-60. [PMID: 35199365 PMCID: PMC9306989 DOI: 10.1111/nyas.14753] [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: 09/30/2021] [Accepted: 01/10/2022] [Indexed: 11/28/2022]
Abstract
An increasing amount of evidence shows that circular RNAs (circRNAs) have critical effects on cancer progression and development; however, the biological function and potential molecular mechanism of circRNAs in hepatocellular carcinoma (HCC) are still unclear. CircRNA sequencing was used to identify differentially expressed circRNAs between HCC tissue and adjacent normal tissue. We found that circ_0001459 expression was significantly elevated in HCC tissue and cell lines. Furthermore, in vitro and in vivo functional experiments were carried out to detect the effects of circ_0001459 on HCC growth and metastasis. Knockdown of circ_0001459 significantly inhibited the proliferation, migration, and invasion of HCC cells, whereas upregulation of circ_0001459 had the opposite effect. Moreover, bioinformatics analysis, dual‐luciferase reporter assay, RNA immunoprecipitation, and fluorescence in situ hybridization assays were used to predict and verify the interaction between circ_0001459, miR‐6165, and the target gene IGF1R. Downregulation of circ_0001459 decreased IGF1R expression and inhibited epithelial‐to‐mesenchymal transition, which could be rescued by treatment with a miR‐6165 inhibitor. Mechanistically, we revealed that circ_0001459 could sponge miR‐6165 and induce the upregulation of its downstream target IGF1R, thus significantly promoting the progression of HCC. Therefore, circ_0001459 could be a new potential therapeutic target for HCC patients.
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Affiliation(s)
- Duo Shen
- Medical School, Southeast University, Nanjing, China
| | - Hongyu Zhao
- Department of Clinical Research Center, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, China
| | - Peng Zeng
- Medical School, Southeast University, Nanjing, China
| | - Meiling Ge
- Department of Clinical Research Center, Drum Tower Hospital of Nanjing, Nanjing, China
| | | | - Wei Zhao
- Medical School, Southeast University, Nanjing, China
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14
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Wu H, Zhao X, Wang J, Jiang X, Cheng Y, He Y, Sun L, Zhang G. Circular RNA CDR1as Alleviates Cisplatin-Based Chemoresistance by Suppressing MiR-1299 in Ovarian Cancer. Front Genet 2022; 12:815448. [PMID: 35154259 PMCID: PMC8826532 DOI: 10.3389/fgene.2021.815448] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/17/2021] [Indexed: 11/30/2022] Open
Abstract
Cisplatin (CDDP) chemoresistance seriously affects the prognosis and survival of patients with ovarian cancer (OC). Previous research has shown that circular RNA CDR1as is biologically associated with a large number of cancers. However, the molecular mechanism underlying the role of CDR1as in CDDP chemoresistance in OC remains unclear. Here, we investigated the mechanism of CDR1as in CDDP-resistant OC. First, we employed bioinformatics analysis and quantitative real-time PCR (qRT-PCR) to determine the expression of CDR1as and related RNAs in CDDP-sensitive and -resistant OC tissues and cells. Then, functional experiments were used to determine cell proliferation, invasion, migration, and apoptosis in CDDP chemoresistance and parent OC cells in vitro. The effect of CDR1as in CDDP chemoresistance OC progression was tested in nude mice in vivo. Moreover, dual-luciferase assays and RNA immunoprecipitation (RIP) were performed to confirm the interactions of CDR1as and related RNAs. Finally, we used Western blotting to determine protein expression levels. Our findings interpret the underlying mechanisms of the CDR1as/miR-1299/PPP1R12B axis and shed light on the clinical applications for CDDP-chemoresistant OC.
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Affiliation(s)
- Han Wu
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xibo Zhao
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Jing Wang
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xinyan Jiang
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Yan Cheng
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Yanan He
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Liyuan Sun
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Guangmei Zhang
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
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