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He H, Chen Y, Liang H, Che W, Chen H, Chen Y, Peng F, Wu B. Circular RNA circCHSY1 silencing inhibits the malignant progression of esophageal squamous cell carcinoma. Discov Oncol 2024; 15:84. [PMID: 38514579 PMCID: PMC10957834 DOI: 10.1007/s12672-024-00935-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 03/14/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND CircRNAs play a crucial role in the regulation of various cancers. This study aims to investigate the involvement of circCHSY1 in the development of esophageal squamous cell carcinoma (ESCC). METHODS RNA levels were quantified using qRT-PCR, and protein levels were measured by western blot. The stability of circCHSY1 was analyzed using RNase R. The functional effect of circCHSY1 on cell behavior was evaluated by CCK-8, EdU, flow cytometry, transwell, tube formation, and xenograft tumor model assays. The associations among circCHSY1, miR-1229-3p, and Tectonic-1 (TCTN1) were certified by bioinformatics analysis, dual-luciferase reporter assay, and RNA pull-down assay. RESULTS CircCHSY1 was up-regulated in both ESCC tissues and cell lines in comparison with the control groups. Knockdown of circCHSY1 inhibited the proliferation, migration, invasion, and tube formation and promoted apoptosis of ESCC cells. Mechanistically, circCHSY1 targeted miR-1229-3p, which was downregulated in ESCC tissues and cells. Inhibition of miR-1229-3p attenuated the effects mediated by circCHSY1 suppression. Besides, miR-1229-3p bound to TCTN1, and TCTN1 overexpression restored miR-1229-3p-induced effects in ESCC cells. Animal experiments revealed that circCHSY1 silencing suppressed tumor tumorigenesis in vivo. CONCLUSION CircCHSY1 contributed to ESCC cell malignancy, and the underlying mechanism involved the circCHSY1/miR-1229-3p/TCTN1 axis, providing potential therapeutic targets for ESCC.
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Affiliation(s)
- Haiquan He
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Ying Chen
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Hanping Liang
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Weibi Che
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Huilong Chen
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Ying Chen
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Fengyuan Peng
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China
| | - Bomeng Wu
- Department of Thoracic Surgery, Gaozhou People's Hospital, No. 89, Xiguan road, Gaozhou, 525200, China.
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ZENG F, ZHAO J, TONG M, HE W, LI N, FAN Y, ZHU Y, ZHANG L, ZHANG H. CircRNA LDLR promotes proliferation and aerobic glycolysis of gastric cancer cells by targeting CHD1 with miR-449b-5p. Turk J Biol 2023; 48:46-58. [PMID: 38665782 PMCID: PMC11042865 DOI: 10.55730/1300-0152.2681] [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: 03/16/2023] [Revised: 02/27/2024] [Accepted: 12/07/2023] [Indexed: 04/28/2024] Open
Abstract
Background/aim Circular RNAs can serve as detection biomarkers and therapeutic targets for tumors. Our study aimed to elucidate the mechanisms associated with circRNA LDLR (circLDLR) in gastric cancer (GC) proliferation and aerobic glycolysis. Materials and methods Expression signatures of circLDLR, miR-449b-5p, and CHD1 were examined in GC samples using quantitative PCR. Proliferation ability of MKN-45 cells was assessed via CCK-8 and EdU assays, and cell apoptosis was measured by flow cytometry. Glucose uptake, lactate production, ATP/ADP ratios, and NAD+/NADH ratios in cell supernatants were quantified to evaluate aerobic glycolysis. Subcellular isolation assay, quantitative PCR, immunoblot analysis, RNA immunoprecipitation (RIP), and dual luciferase reporter assay were employed to investigate the relationship between genes. Results Expression of circLDLR and CHD1 was elevated, while miR-449b-5p expression decreased in GC. Functionally, overexpression of circLDLR enhanced proliferation and aerobic glycolysis and hampered apoptosis of MKN-45 cells. However, upregulation of miR-449b-5p or downregulation of CHD1 reversed these effects. CircLDLR acted as an miRNA spongeand regulated the expression of miR-449b-5p, thereby affecting CHD1 and accelerating GC malignant progression. Conclusion CircLDLR drives the proliferation and aerobic glycolysis of GC cells by targeting CHD1 with miR-449b-5p, which is an ideal potential target for early diagnosis and clinical treatment of GC.
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Affiliation(s)
- FanYe ZENG
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - JunTao ZHAO
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - MengTing TONG
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - WenTing HE
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - Nan LI
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - YuXiang FAN
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - YanHua ZHU
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - LiPing ZHANG
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
| | - HongLiang ZHANG
- Department of Oncology, Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region,
China
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Nafe R, Hattingen E. The Spectrum of Molecular Pathways in Gliomas-An Up-to-Date Review. Biomedicines 2023; 11:2281. [PMID: 37626776 PMCID: PMC10452344 DOI: 10.3390/biomedicines11082281] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
During the last 20 years, molecular alterations have gained increasing significance in the diagnosis and biological assessment of tumors. Gliomas represent the largest group of tumors of the central nervous system, and the main aim of this review is to present the current knowledge on molecular pathways and their alterations in gliomas. A wide range of new insights has been gained, including evidence for the involvement of the WNT pathway or the hippo pathway in the pathobiology of gliomas, indicating a broad involvement of different pathways formerly not considered to play a central role in gliomas. Even new aspects of angiogenic, apoptotic, and metabolic pathways are presented, as well as the rapidly growing field of epigenetic processes, including non-coding RNAs. The two major conclusions drawn from the present review are the distinct interconnectivity of the whole spectrum of molecular pathways and the prominent role of non-coding RNAs, especially circular RNAs, in the regulation of specific targets. All these new insights are discussed, even considering the topic of the resistance to therapy of gliomas, along with aspects that are still incompletely understood, like the role of hydroxymethylation, or even ferroptosis, in the pathobiology of gliomas.
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Affiliation(s)
- Reinhold Nafe
- Department of Neuroradiology, Clinics of Johann Wolfgang Goethe-University, Schleusenweg 2-16, D-60528 Frankfurt am Main, Germany;
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Chen XZ, He WX, Luo RG, Xia GJ, Zhong JX, Chen QJ, Huang YY, Guan YX. KLF14/miR-1283/TFAP2C axis inhibits HER2-positive breast cancer progression via declining tumor cell proliferation. Mol Carcinog 2023; 62:532-545. [PMID: 36752341 DOI: 10.1002/mc.23505] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/29/2022] [Accepted: 12/07/2022] [Indexed: 02/09/2023]
Abstract
MiR-1283 has been identified as a tumor suppressor in some malignancies. Whereas, the role of miR-1283 in HER2-positive (HER2+) breast cancer, particularly its role in regulating cell proliferation, one of the most significant features of tumor progression, is unclear. The related microRNA screened by the breast cancer sample GSE131599 dataset were detected in HER2+ breast cancer tissues and cell lines. Then, the obtained miR-1283 was overexpressed in SKBR3 and BT-474 cells followed by relevant functional assays concerning cell proliferation and apoptosis. The xenograft mouse model was induced and the effect of miR-1283 on tumor growth and cell proliferation was examined. The target of miR-1283 and the transcription factor regulating miR-1283 were predicted and identified. Finally, the influence of transcription factor KLF14 on cell proliferation and apoptosis was investigated. An integrated analysis confirmed that miR-1283 expression was significantly decreased in HER2+ breast cancer tissues. Also, by q-RT-PCR detection, miR-1283 expression was markedly reduced in HER2+ breast cancer tissues and cell lines. The miR-1283 overexpression prevented the proliferation and enhanced apoptosis of HER2+ breast cancer cells, as well as inhibited tumor growth. Mechanistically, miR-1283 inhibited TFAP2C expression by targeting the 3'-untranslated regions of TFAP2C messenger RNA, and the KLF14 enhanced miR-1283 level via binding to its promoter. The result subsequently confirmed the KLF14/miR-1283 signaling suppressed cell proliferation in HER2+ breast cancer. Our results suggested that the KLF14/miR-1283/TFAP2C axis inhibited HER2+ breast cancer progression, which might provide novel insight into mechanical exploration for this disease.
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Affiliation(s)
- Xue-Zhong Chen
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wen-Xing He
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rong-Guang Luo
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Guo-Jin Xia
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jin-Xiu Zhong
- Department of Breast Cancer Center/Nuclear Medicine, The Affiliated Cancer Hospital of Nanchang University, Nanchang, China
| | - Qing-Jie Chen
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yu-Ying Huang
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yan-Xing Guan
- Department of Nuclear Medicine/Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Roles of circular RNAs in regulating the development of glioma. J Cancer Res Clin Oncol 2023; 149:979-993. [PMID: 35776196 DOI: 10.1007/s00432-022-04136-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/13/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Glioma is the most common malignant tumor in the central nervous system. In patients with glioma, the prognosis is poor and median survival is only 12-15 months. With the recent development of sequencing technology, important roles of noncoding RNAs are being discovered in cells, especially those of circular RNAs (circRNAs). Because circRNAs are stable, abundant, and highly conserved, they are regarded as novel biomarkers in the early diagnosis and prognosis of diseases. PURPOSE In this review, roles and mechanisms of circRNAs in the development of glioma are summarized. METHODS This paper collects and reviews relevant PubMed literature. CONCLUSION Several classes of circRNAs are highly expressed in glioma and are associated with malignant biological behaviors of gliomas, including proliferation, migration, invasion, apoptosis, angiogenesis, and drug resistance. Further studies are needed to clarify the roles of circRNAs in glioma and to determine whether it is possible to increase therapeutic effects on tumors through circRNA intervention.
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Yu H, Liu Y, Wang Y, Li Y, Sun J, Liu L. Circ_0005397 enhances hepatocellular carcinoma progression through miR-1283/HEG1. Ann Hepatol 2022; 27:100712. [PMID: 35500803 DOI: 10.1016/j.aohep.2022.100712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES Circular RNA (circRNA) has been confirmed to be an important regulator for the progression of hepatocellular carcinoma (HCC). However, the role and regulatory mechanism of circ_0005397 in HCC are not completely clear. PATIENTS AND METHODS Fifty HCC patients were included in this study. Reverse transcription-qPCR analysis was used to appraise circ_0005397, microRNA (miR)-1283, HEG homolog 1 (HEG1) mRNA expression levels, while western blot was used to identify HEG1, PCNA, Bax and Bcl-2 protein expression levels. Furthermore, cell proliferation, apoptosis, migration, invasion and angiogenesis were judged through cell counting kit-8 assay, EdU assay, Caspase3 activity test, flow cytometry, transwell assay and tube formation experiment. Dual-luciferase reporter assay and RIP assay were used to verify the targeting relationship between miR-1283 and circ_0005397 or HEG1. Finally, the effect of circ_0005397 on HCC tumor development was detected by mice experiments in vivo. RESULTS Circ_0005397 was highly expressed in HCC tissues and cells, in HCC cell lines. Circ_0005397 silencing inhibited proliferation, migration, invasion and angiogenesis, while induced apoptosis in HCC cells. Circ_0005397 could sponge miR-1283, and miR-1283 could target HEG1. MiR-1283 inhibitor incompletely counteracted the effect of si-circ_0005397 on HCC cell progression, while HEG1 overexpression partially overturned the effect of miR-1283 on HCC cell progression. Circ_0005397 regulated the expression of HEG1 through targeting miR-1283. Moreover, circ_0005397 silencing blocked the growth of HCC tumors in vivo. CONCLUSIONS Circ_0005397 regulated HEG1 by targeting miR-1283, thereby promoting HCC development.
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Affiliation(s)
- Haifeng Yu
- Department of Hepatology, Yantai Qishan Hospital, Yantai 264001, China
| | - Youde Liu
- Department of Hepatology, Yantai Qishan Hospital, Yantai 264001, China
| | - Yanna Wang
- Department of Hepatology, Yantai Qishan Hospital, Yantai 264001, China
| | - Yanfang Li
- Department of Hepatology, Yantai Qishan Hospital, Yantai 264001, China
| | - Jing Sun
- Department of Hepatology, Yantai Qishan Hospital, Yantai 264001, China
| | - Lijuan Liu
- Department of Nuclear Medicine, Yantai Yuhuangding Hospital, No. 20, Yuhuangding East Road, Zhifu District, Yantai 264000, China.
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Wei JY, Zhang Q, Yao Y, He HB, Sun CH, Dong TT, Meng GP, Zhang J. Circular RNA circTTBK2 facilitates non-small-cell lung cancer malignancy through the miR-873-5p/TEAD1/DERL1 axis. Epigenomics 2022; 14:931-949. [PMID: 35916080 DOI: 10.2217/epi-2021-0480] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: The underlying mechanisms by which circular RNAs (circRNAs) regulate non-small-cell lung cancer (NSCLC) progression remain elusive. This study investigated the role of circRNA circTTBK2 in NSCLC tumorigenesis. Materials & methods: Quantitative reverse transcriptase polymerase chain reaction analysis of circTTBK2 in NSCLC tissues and cell lines was performed. Cell proliferation, migration, invasion and tumorigenesis were confirmed in vitro and in vivo using CCK-8, EdU incorporation, Transwell assays and xenograft technique. The circTTBK2/miR-873-5p/TEAD1/DERL1 axis was verified by RNA immunoprecipitation, chromatin immunoprecipitation and luciferase reporter assays. Results: Overexpressed circTTBK2 in NSCLC tissues indicates poor prognosis of NSCLC patients. circTTBK2 harbors miR-873-5p, and miR-873-5p directly targets TEAD1. TEAD1 transcriptionally activates DERL1. Conclusion: This study revealed a novel machinery of circTTBK2/miR-873-5p/TEAD1/DERL1 for NSCLC tumorigenesis.
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Affiliation(s)
- Jin-Ying Wei
- Department of General Practice, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, P.R. China
| | - Qiang Zhang
- Department of General Practice, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, P.R. China
| | - Yue Yao
- Department of Respiratory & Critical Care Medicine, Changchun Central Hospital, Changchun, Jilin Province, 130000, P.R. China
| | - Hai-Bin He
- Department of Abdominal Ultrasound, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, P.R. China
| | - Cheng-Hao Sun
- Department of General Practice, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, P.R. China
| | - Ting-Ting Dong
- Department of Respiratory & Critical Care Medicine, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, P.R. China
| | - Guang-Ping Meng
- Department of Respiratory & Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin Province, 130000, P.R. China
| | - Jie Zhang
- Department of Respiratory & Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin Province, 130000, P.R. China
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Liu X, Zhang Y, Wu X, Xu F, Ma H, Wu M, Xia Y. Targeting Ferroptosis Pathway to Combat Therapy Resistance and Metastasis of Cancer. Front Pharmacol 2022; 13:909821. [PMID: 35847022 PMCID: PMC9280276 DOI: 10.3389/fphar.2022.909821] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/20/2022] [Indexed: 01/18/2023] Open
Abstract
Ferroptosis is an iron-dependent regulated form of cell death caused by excessive lipid peroxidation. This form of cell death differed from known forms of cell death in morphological and biochemical features such as apoptosis, necrosis, and autophagy. Cancer cells require higher levels of iron to survive, which makes them highly susceptible to ferroptosis. Therefore, it was found to be closely related to the progression, treatment response, and metastasis of various cancer types. Numerous studies have found that the ferroptosis pathway is closely related to drug resistance and metastasis of cancer. Some cancer cells reduce their susceptibility to ferroptosis by downregulating the ferroptosis pathway, resulting in resistance to anticancer therapy. Induction of ferroptosis restores the sensitivity of drug-resistant cancer cells to standard treatments. Cancer cells that are resistant to conventional therapies or have a high propensity to metastasize might be particularly susceptible to ferroptosis. Some biological processes and cellular components, such as epithelial–mesenchymal transition (EMT) and noncoding RNAs, can influence cancer metastasis by regulating ferroptosis. Therefore, targeting ferroptosis may help suppress cancer metastasis. Those progresses revealed the importance of ferroptosis in cancer, In order to provide the detailed molecular mechanisms of ferroptosis in regulating therapy resistance and metastasis and strategies to overcome these barriers are not fully understood, we described the key molecular mechanisms of ferroptosis and its interaction with signaling pathways related to therapy resistance and metastasis. Furthermore, we summarized strategies for reversing resistance to targeted therapy, chemotherapy, radiotherapy, and immunotherapy and inhibiting cancer metastasis by modulating ferroptosis. Understanding the comprehensive regulatory mechanisms and signaling pathways of ferroptosis in cancer can provide new insights to enhance the efficacy of anticancer drugs, overcome drug resistance, and inhibit cancer metastasis.
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Affiliation(s)
- Xuan Liu
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
- West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Yiqian Zhang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
- West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Xuyi Wu
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Rehabilitation Medicine in Sichuan Province/Rehabilitation Medicine Research Institute, Chengdu, China
| | - Fuyan Xu
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hongbo Ma
- West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Mengling Wu
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yong Xia
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Rehabilitation Medicine in Sichuan Province/Rehabilitation Medicine Research Institute, Chengdu, China
- *Correspondence: Yong Xia,
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circZNF91 Promotes the Malignant Phenotype of Chronic Lymphocytic Leukemia Cells by Targeting the miR-1283/WEE1 Axis. BIOMED RESEARCH INTERNATIONAL 2022; 2022:2855394. [PMID: 35572733 PMCID: PMC9098290 DOI: 10.1155/2022/2855394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/29/2022] [Accepted: 03/15/2022] [Indexed: 11/17/2022]
Abstract
Background Circular RNAs (circRNAs) are frequently dysregulated in cancers and are implicated in tumorigenesis and tumor progression. In this study, we investigated the role of circZNF91 in regulating the malignant phenotype of chronic lymphocytic leukemia (CLL) cells and the underlying molecular mechanism. Material / Methods The expression of circZNF91 was determined by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The binding sequences between circZNF91/miR-1283 and miR-1283/WEE1 were predicted by the bioinformatic database. The functional interactions were confirmed by the dual-luciferase reporter, RT-qPCR, and Western blot assays. The functional roles of the circZNF91/miR-1283/WEE1 axis in CLL progression were examined by cell proliferation, apoptosis, and EdU incorporation assays. Results circZNF91 was upregulated in CLL samples. Silencing circZNF91 attenuated CLL cell proliferation and induced apoptosis and cell cycle arrest. circZNF91 could sponge miR-1283 to suppress its activity, which in turn upregulated WEE1 expression. Silencing circ-TTBK2 reduced WEE1 expression, while the inhibitor of miR-1283 enhanced WEE1 expression. The miR-1283/WEE1 axis mediated the effects of circZNF91 on cell proliferation and apoptosis, as well as induced cell cycle regulation. Conclusions The circZNF91/miR-1283/WEE1 axis is engaged in the pathological phenotypes of CLL cells, which could serve as potential targets for future therapy development.
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Non-coding RNAs in ferroptotic cancer cell death pathway: meet the new masters. Hum Cell 2022; 35:972-994. [PMID: 35415781 DOI: 10.1007/s13577-022-00699-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 04/01/2022] [Indexed: 02/08/2023]
Abstract
Despite the recent advances in cancer therapy, cancer chemoresistance looms large along with radioresistance, a major challenge in dire need of thorough and minute investigation. Not long ago, cancer cells were reported to have proven refractory to the ferroptotic cell death, a newly discovered form of regulated cell death (RCD), conspicuous enough to draw attention from scholars in terms of targeting ferroptosis as a prospective therapeutic strategy. However, our knowledge concerning the underlying molecular mechanisms through which cancer cells gain immunity against ferroptosis is still in its infancy. Of late, the implication of non-coding RNAs (ncRNAs), including circular RNAs (circRNAs), microRNAs (miRNAs), and long non-coding RNAs (lncRNAs) in ferroptosis has been disclosed. Nevertheless, precisely explaining the molecular mechanisms behind the contribution of ncRNAs to cancer radio/chemotherapy resistance remains a challenge, requiring further clarification. In this review, we have presented the latest available information on the ways and means of regulating ferroptosis by ncRNAs. Moreover, we have provided important insights about targeting ncRNAs implicated in ferroptosis with the hope of opening up new horizons for overcoming cancer treatment modalities. Though a long path awaits until we make this ambitious dream come true, recent progress in gene therapy, including gene-editing technology will aid us to be optimistic that ncRNAs-based ferroptosis targeting would soon be on stream as a novel therapeutic strategy for treating cancer.
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Wei W, Wang C, Wang L, Zhang J. circ_0020123 promotes cell proliferation and migration in lung adenocarcinoma via PDZD8. Open Med (Wars) 2022; 17:536-549. [PMID: 35415250 PMCID: PMC8932391 DOI: 10.1515/med-2022-0434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/27/2021] [Accepted: 01/05/2022] [Indexed: 02/07/2023] Open
Abstract
High circ_0020123 expression is associated with poor prognosis in patients with non-small cell lung cancer (NSCLC) as previously reported. Whether circ_0020123 also plays an oncogenic role in lung adenocarcinoma (LUAD) is still unknown. Additionally, circ_0020123 is derived from part of exon (1312–3851) from its host gene PDZ domain-containing protein 8 (PDZD8). We hypothesized that circ_0020123 might affect malignant behaviors of LUAD cells by regulating PDZD8. Reverse transcription quantitative polymerase chain reaction revealed that PDZD8 was highly expressed in LUAD tissues and cells. PDZD8 knockdown suppressed LUAD cell proliferation and migration as shown by colony formation assays, Ethynyl deoxyuridine incorporation assays, Transwell assays, and wound healing assays. circ_0020123 was also found to be upregulated in LUAD tissues and cells. Moreover, circ_0020123 positively regulated PDZD8 expression in LUAD cells but exerted no significant effect on the transcriptional level of PDZD8. Mechanistically, circ_0020123 act as a competing endogenous RNA (ceRNA) to interact with miR-1283, thereby releasing the repression on PDZD8. Moreover, PDZD8 overexpression rescued the suppressive effect of circ_0020123 knockdown on LUAD cell proliferation and migration. In conclusion, circ_0020123 interacts with miR-1283 as a ceRNA to regulate PDZD8 expression, thus promoting the proliferation and migration of LUAD cells. The study might provide new biomarkers for future LUAD investigation.
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Affiliation(s)
- Wei Wei
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing University School of Medicine , Nanjing 210002 , Jiangsu , China
| | - Changyong Wang
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing University School of Medicine , Nanjing 210002 , Jiangsu , China
| | - Lele Wang
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing University School of Medicine , Nanjing 210002 , Jiangsu , China
| | - Jianfeng Zhang
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing University School of Medicine , 305 East Zhongshan Road , Nanjing 210002 , Jiangsu , China
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Li X, Wang C, Chen G, Zou W, Deng Y, Zhou F. EIF4A3-induced circCCNB1 (hsa_circ_0001495) promotes glioma progression by elevating CCND1 through interacting miR-516b-5p and HuR. Metab Brain Dis 2022; 37:819-833. [PMID: 35038081 DOI: 10.1007/s11011-021-00899-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/26/2021] [Indexed: 01/29/2023]
Abstract
To explore the functions of circRNA cyclin B1 (circCCNB1) in glioma and its possible mechanisms. The expression of circCCNB1, eukaryotic translation initiation factor 4A3 (EIF4A3), cyclin D1 (CCND1) and miR-516b-5p was determined by qRT-PCR, western blot or immunohistochemistry (IHC) assay. The feature of circCCNB1 was analyzed by Actinomycin D (ActD), RNase R and subcellular fraction assays. The molecule relationships were analyzed by RIP, dual-luciferase reporter and RNA pull-down assays. CCK-8, EdU and colony formation assays were performed to analyze cell proliferation. Flow cytometry analysis was executed to estimate the cell cycle. Murine xenograft model assay was used for the role of circCCNB1 in vivo. CircCCNB1 was overexpressed in glioma tissues and cells. EIF4A3 positively regulated circCCNB1 expression. CircCCNB1 knockdown repressed glioma cell proliferation and cell cycle process in vitro and blocked tumor growth in vivo. CircCCNB1 knockdown reduced CCND1 expression in glioma cells and CCND1 overexpression bated the effect of circCCNB1 knockdown on glioma cell growth. CircCCNB1 interacted with HuR to elevate CCND1 expression. miR-516b-5p could interact with circCCNB1 and CCND1. CircCCNB1 regulated glioma cell progression and CCND1 expression by miR-516b-5p and HuR. CircCCNB1 aggravated glioma cell growth by elevating CCND1 through targeting miR-516b-5p and HuR.
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Affiliation(s)
- Xiaoli Li
- Department of Neurology, Renmin Hospital, Hubei University of Medicine, No. 39, Chaoyang Middle Road, Maojian District, Shiyan, 442000, China
| | - Chengmou Wang
- Department of Neurology, Renmin Hospital, Hubei University of Medicine, No. 39, Chaoyang Middle Road, Maojian District, Shiyan, 442000, China
| | - Guanghui Chen
- Department of Neurology, Renmin Hospital, Hubei University of Medicine, No. 39, Chaoyang Middle Road, Maojian District, Shiyan, 442000, China
| | - Wenqin Zou
- Department of Neurology, Renmin Hospital, Hubei University of Medicine, No. 39, Chaoyang Middle Road, Maojian District, Shiyan, 442000, China
| | - Yanqing Deng
- Department of Neurology, Renmin Hospital, Hubei University of Medicine, No. 39, Chaoyang Middle Road, Maojian District, Shiyan, 442000, China
| | - Faming Zhou
- Department of Neurology, Renmin Hospital, Hubei University of Medicine, No. 39, Chaoyang Middle Road, Maojian District, Shiyan, 442000, China.
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Qi R, Bai Y, Wei Y, Liu N, Shi B. The role of non-coding RNAs in ferroptosis regulation. J Trace Elem Med Biol 2022; 70:126911. [PMID: 34952295 DOI: 10.1016/j.jtemb.2021.126911] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 12/01/2021] [Accepted: 12/10/2021] [Indexed: 02/08/2023]
Abstract
Ferroptosis is a newly recognized form of cell death that is distinct from apoptosis, necrosis, autophagy in morphology, biochemistry, and heredity. The basic process of ferroptosis involves disordered permeability of plasma membrane, which is caused by abnormal accumulation of lipids and reactive oxygen species (ROS). The regulatory mechanism of ferroptosis is important due to its involvement in tumor progression, neurotoxicity, neurodegenerative diseases, acute renal failure, and ischemia-reperfusion injury. Recent studies have shown that in ferroptosis metabolism, non-coding RNAs (ncRNAs) can interfere with multiple signaling pathways at both the pre-transcriptional and post-transcriptional levels. Despite great progress, current research on the mechanism of ncRNAs and ferroptosis remains insufficient. This review provides an overview of the main mechanisms and targets of ferroptosis and focuses on the mechanisms of non-coding RNA regulation. Analyzing the deficiencies in current research may provide ideas for future studies to investigate.
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Affiliation(s)
- Ran Qi
- Department of General Surgery, Tongji Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Yixuan Bai
- Department of Digestive Internal Medicine, Affiliated Dalian Friendship Hospital of Dalian Medical University, Dalian, Liaoning,116100, China
| | - Yuhua Wei
- Department of General Surgery, Tongji Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Nanbin Liu
- Department of General Surgery, Tongji Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Baomin Shi
- Department of General Surgery, Tongji Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China.
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Sui L, Sanders A, Jiang WG, Ye L. Deregulated molecules and pathways in the predisposition and dissemination of breast cancer cells to bone. Comput Struct Biotechnol J 2022; 20:2745-2758. [PMID: 35685372 PMCID: PMC9168524 DOI: 10.1016/j.csbj.2022.05.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 12/28/2022] Open
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Chen M, Yan C, Zhao X. Research Progress on Circular RNA in Glioma. Front Oncol 2021; 11:705059. [PMID: 34745938 PMCID: PMC8568300 DOI: 10.3389/fonc.2021.705059] [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: 05/04/2021] [Accepted: 10/06/2021] [Indexed: 12/12/2022] Open
Abstract
The discovery of circular RNA (circRNA) greatly complements the traditional gene expression theory. CircRNA is a class of non-coding RNA with a stable cyclic structure. They are highly expressed, spatiotemporal-specific and conservative across species. Importantly, circRNA participates in the occurrence of many kinds of tumors and regulates the tumor development. Glioma is featured by limited therapy and grim prognosis. Cancer-associated circRNA compromises original function or creates new effects in glioma, thus contributing to oncogenesis. Therefore, this article reviews the biogenesis, metabolism, functions and properties of circRNA as a novel potential biomarker for gliomas. We elaborate the expression characteristics, interaction between circRNA and other molecules, aiming to identify new targets for early diagnosis and treatment of gliomas.
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Affiliation(s)
- Mengyu Chen
- Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chunyan Yan
- Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xihe Zhao
- Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, China
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