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Chen Z, Xu Z, Wang Q, Wang L, Zhang H, Wang W, Zhao H, Guo Y, Cui J. Exosome-delivered circRNA circSYT15 contributes to cisplatin resistance in cervical cancer cells through the miR-503-5p/RSF1 axis. Cell Cycle 2023; 22:2211-2228. [PMID: 37974391 PMCID: PMC10730224 DOI: 10.1080/15384101.2023.2281768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 11/06/2023] [Indexed: 11/19/2023] Open
Abstract
The development of chemotherapy resistance is a major obstacle for cervical cancer (CC) patients. Exosome-mediated transfer of circular RNAs (circRNAs) was found to have relevance to the CC. This study is designed to explore the role and mechanism of exosomal circRNA synaptotagmin 15 (circSYT15) on cisplatin (DDP) resistance in CC. Cell proliferation ability and apoptosis rate were detected by Cell Counting Kit-8 (CCK-8), 5-ethynyl-2'-deoxyuridine (EdU), colony formation, and flow cytometry assays. CircSYT15, microRNA-503-5p (miR-503-5p), Remodeling spacing factor 1 (RSF1) levels were detected by real-time quantitative polymerase chain reaction (RT-qPCR). Exosomes were analyzed by a transmission electron microscope and nanoparticle tracking analysis. CD63, CD81, TSC101, Bcl-2, Bax, C-caspase 3, and RSF1 protein levels were examined by western blot assay. The binding between miR-503-5p and circSYT15 or RSF1 was predicted by circBank or Starbase and then verified by a dual-luciferase reporter and RNA Immunoprecipitation (RIP). The biological role of exosomal circSYT15 in DDP resistance of CC in vivo. CircSYT15 was upregulated in the DDP-resistant CC cells and exosomes isolated from DDP-resistant CC cells. CircSYT15 knockdown repressed the proliferation and drug resistance of CC and induced apoptosis in CC cells. Exosomes shuttled circSYT15 act as a sponge to affect RSF1 expression, thereby promoting proliferation and drug resistance and repressing apoptosis of sensitive CC cells. Exosomal circSYT15 boost DDP resistance of cervical cancer in vivo. Exosome-mediated transfer of circSYT15 enhanced DDP resistance in CC partly by targeting the miR-503-5p/RSF1 axis, providing a foundation for future clinical applications of CC drug resistance.
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Affiliation(s)
- Zhilong Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Zhen Xu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Qian Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Lu Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Hailing Zhang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Wuliang Wang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Hu Zhao
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Yilin Guo
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
| | - Jinquan Cui
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China
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Shen L, Dang J, Liu S, Xian B, Deng Y, Qu D. CircRNA VPRBP inhibits tumorigenicity of cervical cancer via miR-93-5p/FRMD6 axis. Reprod Sci 2022; 29:2251-2264. [PMID: 35501594 DOI: 10.1007/s43032-022-00923-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 03/12/2022] [Indexed: 12/11/2022]
Abstract
BACKGROUND Cervical cancer is a malignant tumor that threatens the life and health of women. Circular RNA (circRNA) is a research hotspot in human diseases including cervical cancer. However, the research of circRNA viral protein R-binding protein (circ_VPRBP) in cervical cancer is blank. METHODS Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression of target genes in cervical cancer tissues and cells. The expression of related proteins was detected by western blot. The localization of circ_VPRBP was detected by nuclear cytoplasmic separation, and the stability of circ_VPRBP was verified by actinomycin D. After transfection with oligonucleotides and/or plasmids, cell proliferation, migration, invasion and apoptosis were detected by 3-(4, 5-dimethylthiazol-2-yl) -2, 5-diphenyl-2-H-tetrazolium bromide (MTT), colony formation, 5-ethynyl-2'-deoxyuridine (EdU), transwell, or flow cytometry assays. Mechanistically, the interaction between microRNA-93-5p (miR-93-5p) and circ_VPRBP/FERM domain containing 6 (FRMD6) was verified by dual luciferase reporter assay. Animal experiment was conducted to investigate the role of circ_VPRBP in vivo. RESULTS Circ_VPRBP was down-regulated in cervical cancer tissues and cells, and overexpression of circ_VPRBP inhibited proliferation and promoted apoptosis of Caski and C33A cells. MiR-93-5p was a target of circ_VPRBP, and miR-93-5p mimic reversed the effect of circ_VPRBP on cell behavior. FRMD6 was a downstream target of miR-93-5p, and down-regulated FRMD6 reversed the cell viability, migration and invasion of cervical cancer cells inhibited by anti-miR-93-5p. Circ_VPRBP inhibited tumor growth by regulating miR-93-5p and FRMD6 in vivo. CONCLUSION Circ_VPRBP inhibited cell proliferation, migration and invasion and promoted cell apoptosis of cervical cancer cells by regulating miR-93-5p/FRMD6 axis.
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Affiliation(s)
- Lunhua Shen
- Department of Obstetrics and Gynecology, Affiliated Hospital of North Sichuan Medical College, No. 1, Maoyuan South Road, Shunqing District, Nanchong City, 637000, Sichuan Province, China.,Non-Invasive and Microinvasive Laboratory of Gynecology, Affiliated Hospital of North Sichuan Medical College, No. 1, Maoyuan South Road, Shunqing District, Nanchong City, 637000, Sichuan Province, China
| | - Jiafeng Dang
- Department of Obstetrics and Gynecology, Pidu District People's Hospital, Chengdu City, Sichuan Province, China
| | - Shengfeng Liu
- Department of Obstetrics and Gynecology, Affiliated Hospital of North Sichuan Medical College, No. 1, Maoyuan South Road, Shunqing District, Nanchong City, 637000, Sichuan Province, China
| | - Biao Xian
- Department of Clinical Medicine, North Sichuan Medical College, Nanchong City, Sichuan Province, China
| | - Yan Deng
- Department of Obstetrics and Gynecology, People's Hospital of Lezhi County, Sichuan Province, Ziyang City, Sichuan Province, China
| | - Dacheng Qu
- Department of Obstetrics and Gynecology, Affiliated Hospital of North Sichuan Medical College, No. 1, Maoyuan South Road, Shunqing District, Nanchong City, 637000, Sichuan Province, China. .,Non-Invasive and Microinvasive Laboratory of Gynecology, Affiliated Hospital of North Sichuan Medical College, No. 1, Maoyuan South Road, Shunqing District, Nanchong City, 637000, Sichuan Province, China.
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Yes-associated protein 1 exerts its tumor-promoting effects and increases cisplatin resistance in tongue squamous cell carcinoma cells by dysregulating Hippo signal pathway. Anticancer Drugs 2022; 33:352-361. [DOI: 10.1097/cad.0000000000001269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang X, Zhang Y, Dou L. miR-552 promotes the proliferation and metastasis of cervical cancer cells through targeting MUC15 pathway. J Cancer 2021; 12:6094-6104. [PMID: 34539882 PMCID: PMC8425207 DOI: 10.7150/jca.56098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 08/09/2021] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence shows that microRNAs (miRNAs) play key roles in tumorigenesis, progression, recurrence and drug resistance of malignant tumors. The tumor-promoting role of miR-552 has been evidenced in multiple tumors. Yet, the relevance of miR-552 in cervical cancer remains undetermined. This study aimed to investigate the role of miR-552 in cervical cancer proliferation and metastasis. Herein, we for first found that miR-552 expression was upregulated in cervical cancer tissues compared with their normal controls. Functional assays revealed that miR-552 promoted the proliferation and metastasis of cervical cancer cells. Mechanically, bioinformatics and luciferase reporter analysis identified MUC15 as a direct target of miR-552. Reduced MUC15 expression was detected in cervical cancer, and MUC15 overexpression exhibited a tumor-suppressive effect. MUC15 restoration partially abolished the discrepancy of growth and metastasis capacity between miR-552 overexpression cervical cancer cells and control cells. Taken together, these data demonstrate that miR-552 acts as a potential oncogene miRNA in cervical cancer, which exerts its function through targeting MUC15.
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Affiliation(s)
- Xinxin Zhang
- Department of Discipline Inspection Commission, China Medical University, Shenyang 110001, Liaoning, China
| | - Yi Zhang
- Department of Discipline Inspection Commission, China Medical University, Shenyang 110001, Liaoning, China
| | - Lei Dou
- Department of Discipline Inspection Commission, China Medical University, Shenyang 110001, Liaoning, China
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Ouni M, Gottmann P, Westholm E, Schwerbel K, Jähnert M, Stadion M, Rittig K, Vogel H, Schürmann A. MiR-205 is up-regulated in islets of diabetes-susceptible mice and targets the diabetes gene Tcf7l2. Acta Physiol (Oxf) 2021; 232:e13693. [PMID: 34028994 DOI: 10.1111/apha.13693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 05/12/2021] [Accepted: 05/21/2021] [Indexed: 12/11/2022]
Abstract
AIM MicroRNAs play an important role in the maintenance of cellular functions by fine-tuning gene expression levels. The aim of the current study was to identify genetically caused changes in microRNA expression which associate with islet dysfunction in diabetic mice. METHODS To identify novel microRNAs involved in islet dysfunction, transcriptome and miRNome analyses were performed in islets of obese, diabetes-susceptible NZO and diabetes-resistant B6-ob/ob mice and results combined with quantitative trait loci (QTL) and functional in vitro analysis. RESULTS In islets of NZO and B6-ob/ob mice, 94 differentially expressed microRNAs were detected, of which 11 are located in diabetes QTL. Focusing on conserved microRNAs exhibiting the strongest expression difference and which have not been linked to islet function, miR-205-5p was selected for further analysis. According to transcriptome data and target prediction analyses, miR-205-5p affects genes involved in Wnt and calcium signalling as well as insulin secretion. Over-expression of miR-205-5p in the insulinoma cell line INS-1 increased insulin expression, left-shifted the glucose-dependence of insulin secretion and supressed the expression of the diabetes gene TCF7L2. The interaction between miR-205-5p and TCF7L2 was confirmed by luciferase reporter assay. CONCLUSION MiR-205-5p was identified as relevant microRNA involved in islet dysfunction by interacting with TCF7L2.
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Affiliation(s)
- Meriem Ouni
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
| | - Pascal Gottmann
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
| | - Efraim Westholm
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- Unit of Islet Cell Exocytosis Department of Clinical Sciences Malmö Lund University Diabetes CentreLund University Malmö Sweden
| | - Kristin Schwerbel
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
| | - Markus Jähnert
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
| | - Mandy Stadion
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
| | - Kilian Rittig
- Clinic for Angiology and Diabetology Frankfurt (Oder) Germany
- Institute of Nutritional Science University of Potsdam Brandenburg Germany
| | - Heike Vogel
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
- Research Group Genetics of Obesity German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- Research Group Molecular and Clinical Life Science of Metabolic Diseases Faculty of Health Sciences Brandenburg University of Potsdam Brandenburg Germany
| | - Annette Schürmann
- Department of Experimental Diabetology German Institute of Human Nutrition Potsdam‐Rehbruecke (DIfE) Nuthetal Germany
- German Center for Diabetes Research (DZD) München‐Neuherberg Germany
- Institute of Nutritional Science University of Potsdam Brandenburg Germany
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