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Ma S, Xu Y, Qin X, Tao M, Gu X, Shen L, Chen Y, Zheng M, Qin S, Wu G, Ju S. RUNX1, FUS, and ELAVL1-induced circPTPN22 promote gastric cancer cell proliferation, migration, and invasion through miR-6788-5p/PAK1 axis-mediated autophagy. Cell Mol Biol Lett 2024; 29:95. [PMID: 38956466 PMCID: PMC11218243 DOI: 10.1186/s11658-024-00610-9] [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: 01/29/2024] [Accepted: 06/14/2024] [Indexed: 07/04/2024] Open
Abstract
BACKGROUND An increasing number of studies have demonstrated the association of circular RNAs (circRNAs) with the pathological processes of various diseases and their involvement in the onset and progression of multiple cancers. Nevertheless, the functional roles and underlying mechanisms of circRNAs in the autophagy regulation of gastric cancer (GC) have not been fully elucidated. METHODS We used transmission electron microscopy and the mRFP-GFP-LC3 dual fluorescent autophagy indicator to investigate autophagy regulation. The cell counting kit-8 assay, colony formation assay, 5-ethynyl-2'-deoxyuridine incorporation assay, Transwell assay, and Western blot assay were conducted to confirm circPTPN22's influence on GC progression. Dual luciferase reporter assays validated the binding between circPTPN22 and miR-6788-5p, as well as miR-6788-5p and p21-activated kinase-1 (PAK1). Functional rescue experiments assessed whether circPTPN22 modulates PAK1 expression by competitively binding miR-6788-5p, affecting autophagy and other biological processes in GC cells. We investigated the impact of circPTPN22 on in vivo GC tumors using a nude mouse xenograft model. Bioinformatics tools predicted upstream regulatory transcription factors and binding proteins of circPTPN22, while chromatin immunoprecipitation and ribonucleoprotein immunoprecipitation assays confirmed the binding status. RESULTS Upregulation of circPTPN22 in GC has been shown to inhibit autophagy and promote cell proliferation, migration, and invasion. Mechanistically, circPTPN22 directly binds to miR-6788-5p, subsequently regulating the expression of PAK1, which activates protein kinase B (Akt) and extracellular signal-regulated kinase (Erk) phosphorylation. This modulation ultimately affects autophagy levels in GC cells. Additionally, runt-related transcription factor 1 (RUNX1) negatively regulates circPTPN22 expression, while RNA-binding proteins such as FUS (fused in sarcoma) and ELAVL1 (recombinant ELAV-like protein 1) positively regulate its expression. Inhibition of the autophagy pathway can increase FUS expression, further upregulating circPTPN22 in GC cells, thereby exacerbating the progression of GC. CONCLUSION Under the regulation of the transcription factor RUNX1 and RNA-binding proteins FUS and ELAVL1, circPTPN22 activates the phosphorylation of Akt and Erk through the miR-6788-5p/PAK1 axis, thereby modulating autophagy in GC cells. Inhibition of autophagy increases FUS, which in turn upregulates circPTPN22, forming a positive feedback loop that ultimately accelerates the progression of GC.
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Affiliation(s)
- Shuo Ma
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, Jiangsu, China
- Diagnostics Department, Medical School of Southeast University, Nanjing, 210009, Jiangsu, China
| | - Yanhua Xu
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
- Department of Laboratory Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, 225000, Jiangsu, China
| | - Xinyue Qin
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
| | - Mei Tao
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
| | - Xinliang Gu
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
| | - Lei Shen
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
| | - Yinhao Chen
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital Bonn, Bonn, Germany
| | - Ming Zheng
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
| | - Shiyi Qin
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China
| | - Guoqiu Wu
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, Jiangsu, China.
- Diagnostics Department, Medical School of Southeast University, Nanjing, 210009, Jiangsu, China.
| | - Shaoqing Ju
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Xisi Road, NO.20, Nantong, 226001, Jiangsu, China.
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Liu T, Xie XM, He YP, Zhang JY, Mou JY. circ_WASF2 regulates ferroptosis by miR-634/ GPX4 signaling in pancreatic cancer. Discov Oncol 2024; 15:143. [PMID: 38704809 PMCID: PMC11070409 DOI: 10.1007/s12672-024-01001-4] [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: 01/29/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024] Open
Abstract
PURPOSE Pancreatic cancer (PC) is one of the most lethal malignant gastrointestinal tumors (GI) characterized by a poor prognosis. Ferroptosis is an emerging programmed cell death that plays an essential role in the progression of various cancers. Ferroptosis is driven by iron-dependent phospholipid peroxidation and is regulated by mitochondrial activity, lipid peroxidation, and reactive oxygen species (ROS). The function and mechanism of ferroptosis in PC need more research. METHODS The levels of circRNAs, miRNAs, and mRNAs were detected by quantitative real-time polymerase chain reaction (qRT-PCR). Western blot was used for protein detection. CCK8 assays were used to detect cell proliferation. Cell death, lipid peroxidation, ROS, and Fe2+ were detected by indicted kits. Dual-luciferase reporter and RNA pull-down assays were conducted to confirm the interaction between circRNAs, miRNAs, and mRNAs. RESULTS In this research, we found that circular RNA hsa_circ_0000003(circ_WASF2) was upregulated in pancreatic cancer cells. The silence of circ_WASF2 inhibited cancer proliferation and increased cell death by increasing ferroptosis accompanied by up-regulation of lipid peroxidation, ROS, and Fe2+. Further studies showed that circ_WASF2 could attenuate ferroptosis by targeting miR-634 and the downstream glutathione peroxidase 4 (GPX4). GPX4 has been well-reported as a central factor in ferroptosis. Our research revealed a new pathway for regulating ferroptosis in PC. CONCLUSION In summary, we have determined that circ_WASF2/miR-634/GPX4 contributed to ferroptosis-induced cell death, and provided a possible therapeutic target in PC.
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Affiliation(s)
- Tao Liu
- Department of Hepatobiliary Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, No. 158, Wuyang Avenue, Enshi, 445000, Hubei, China
| | - Xing-Ming Xie
- Department of Hepatobiliary Surgery, The Key Laboratory of Advanced Interdisciplinary Studies Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
| | - Ya-Peng He
- Department of Anesthesiology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, No. 158, Wuyang Avenue, Enshi, 445000, Hubei, China
| | - Jia-Yao Zhang
- Department of Hepatobiliary Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, No. 158, Wuyang Avenue, Enshi, 445000, Hubei, China.
| | - Jun-Ying Mou
- Department of Anesthesiology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, No. 158, Wuyang Avenue, Enshi, 445000, Hubei, China.
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Liu Y, Yang Y, Li M, Fu X, He X, Li X, Cho JY, Li PF, Yu T. CircTMEM165 facilitates endothelial repair by modulating mitochondrial fission via miR-192/SCP2 in vitro and in vivo. iScience 2024; 27:109502. [PMID: 38591009 PMCID: PMC11000015 DOI: 10.1016/j.isci.2024.109502] [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: 08/17/2023] [Revised: 11/13/2023] [Accepted: 03/13/2024] [Indexed: 04/10/2024] Open
Abstract
Constitutive explorations indicate a correlation between circular RNAs (circRNAs) and cardiovascular diseases. However, the involvement of circRNAs in endothelial recuperation and in-stent restenosis (ISR) remains underexplored. CircTMEM165 has first been reported to be highly expressed in hypoxic human umbilical vein endothelial cells (HUVECs). Here, we identified that circTMEM165 was downregulated in ISR patients, inversely correlating with ISR severity. Functionally, circTMEM165 was found to be abundant in endothelial cells, inhibiting inflammation, and adhesion. Particularly, we first observed that circTMEM165 could alleviate HUVECs apoptosis and mitochondrial fission induced by lipopolysaccharide (LPS). Mechanistically, circTMEM165, as a miR-192-3p sponge, enhancing SCP2 expression, which serves as a critical regulator of HUVECs biological functions. Moreover, in vivo, circTMEM165 attenuated intimal hyperplasia and facilitated repair following classic rat carotid artery balloon injury model. These findings investigated the circTMEM165-miR-192-3p-SCP2 axis as a critical determinant of endothelial health and a potential biomarker and therapeutic target for vascular disorders.
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Affiliation(s)
- Yan Liu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yanyan Yang
- Department of Immunology, School of Basic Medicine, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China
| | - Min Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
| | - Xiuxiu Fu
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiangqin He
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiaoxin Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pei-feng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
| | - Tao Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Sudhakar SRN, Khan SN, Clark A, Hendrickson-Rebizant T, Patel S, Lakowski TM, Davie JR. Protein arginine methyltransferase 1, a major regulator of biological processes. Biochem Cell Biol 2024; 102:106-126. [PMID: 37922507 DOI: 10.1139/bcb-2023-0212] [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] [Indexed: 11/05/2023] Open
Abstract
Protein arginine methyltransferase 1 (PRMT1) is a major type I arginine methyltransferase that catalyzes the formation of monomethyl and asymmetric dimethylarginine in protein substrates. It was first identified to asymmetrically methylate histone H4 at the third arginine residue forming the H4R3me2a active histone mark. However, several protein substrates are now identified as being methylated by PRMT1. As a result of its association with diverse classes of substrates, PRMT1 regulates several biological processes like chromatin dynamics, transcription, RNA processing, and signal transduction. The review provides an overview of PRMT1 structure, biochemical features, specificity, regulation, and role in cellular functions. We discuss the genomic distribution of PRMT1 and its association with tRNA genes. Further, we explore the different substrates of PRMT1 involved in splicing. In the end, we discuss the proteins that interact with PRMT1 and their downstream effects in diseased states.
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Affiliation(s)
- Sadhana R N Sudhakar
- Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, MB, Canada
| | - Shahper N Khan
- Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, MB, Canada
| | - Ariel Clark
- Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, MB, Canada
| | | | - Shrinal Patel
- Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, MB, Canada
| | - Ted M Lakowski
- College of Pharmacy Pharmaceutical Analysis Laboratory, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Paul Albrechtsen Research Institute, CancerCare Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - James R Davie
- Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, MB, Canada
- Paul Albrechtsen Research Institute, CancerCare Manitoba, Winnipeg, MB R3E 0V9, Canada
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Liu D, Dong Y, Gao J, Wu Z, Zhang L, Wang B. Role of the circular RNA regulatory network in the pathogenesis of biliary atresia. Exp Ther Med 2024; 27:95. [PMID: 38313582 PMCID: PMC10831818 DOI: 10.3892/etm.2024.12383] [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: 03/24/2023] [Accepted: 11/13/2023] [Indexed: 02/06/2024] Open
Abstract
Circular RNAs (circRNAs) serve an essential role in the occurrence and development of cholangiocarcinoma, but the expression and function of circRNA in biliary atresia (BA) is not clear. In the present study, circRNA expression profiles were investigated in the liver tissues of patients with BA as well as in the choledochal cyst (CC) tissues of control patients using RNA sequencing. A total of 78 differentially expressed circRNAs (DECs) were identified between the BA and CC tissues. The expression levels of eight circRNAs (hsa_circ_0006137, hsa_circ_0079422, hsa_circ_0007375, hsa_circ_0005597, hsa_circ_0006961, hsa_circ_0081171, hsa_circ_0084665 and hsa_circ_0075828) in the liver tissues of the BA group and control group were measured using reverse transcription-quantitative polymerase chain reaction. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis demonstrated that the identified DECs are involved in a variety of biological processes, including apoptosis and metabolism. In addition, based on the GO and KEGG pathway enrichment analyses, it was revealed that target genes that can be affected by circRNAs regulatory network were enriched in the TGF-β signaling pathway, EGFR tyrosine kinase inhibitor resistance pathway and transcription factor regulation pathway as well as other pathways that may be associated with the pathogenesis of BA. The present study revealed that circRNAs are potentially implicated in the pathogenesis of BA and could help to find promising targets and biomarkers for BA.
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Affiliation(s)
- Dong Liu
- Department of General Surgery, Shenzhen Children's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Yinghui Dong
- Department of Ultrasound, Shenzhen People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Jiahui Gao
- Department of General Surgery, Shenzhen Children's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Zhouguang Wu
- Department of General Surgery, Shenzhen Children's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Lihui Zhang
- Department of Traditional Chinese Medicine, Shenzhen Children's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Bin Wang
- Department of General Surgery, Shenzhen Children's Hospital, Shenzhen, Guangdong 518000, P.R. China
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Fang Z, Wang D, Sun F, Chang J, Yuan D, Lin S, Teng J. Circ-Luc7l Absence Attenuates Diabetic Nephropathy Progression by Reducing Mesangial Cell Excessive Proliferation, Inflammation, and Extracellular Matrix Accumulation via Mediating the miR-205-5p/Tgfbr1 Pathway. Biochem Genet 2024:10.1007/s10528-024-10694-9. [PMID: 38376578 DOI: 10.1007/s10528-024-10694-9] [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: 06/12/2023] [Accepted: 01/09/2024] [Indexed: 02/21/2024]
Abstract
Diabetic nephropathy (DN) threatens the survival quality of patients, with complex pathogenesis. Circular RNA (circRNA) dysregulation occurs in DN development. This work aimed to investigate the role of circ-Luc7l in DN cell models and related molecular mechanisms. The expression of circ-Luc7l, microRNA (miR)-205-5p, and transforming growth factor-beta receptor 1 (Tgfbr1) was examined by real-time quantitative PCR (RT-qPCR). Cell viability and proliferation were detected by Cell Counting Kit-8 (CCK-8) assay and EdU assay. The expression of extracellular matrix (ECM)-related markers and Tgrbr1 protein was measured by Western blot. The binding between miR-205-5p and circ-Luc7l or Tgfbr1 was validated by dual-luciferase reporter assay, RNA immunoprecipitation (RIP) assay, or RNA pull-down assay. Experimental animal models were established to elucidate the function of circ-Luc7l in vivo. Circ-Luc7l expression was notably enhanced in high glucose (HG)-treated mesangial cells. Knockdown of circ-Luc7l attenuated HG-induced cell proliferation, inflammation, and ECM accumulation in vitro and relieved inflammation and ECM accumulation of kidneys of diabetic mice in vivo. Circ-Luc7l targeted miR-205-5p, and miR-205-5p inhibition rescued the depletion effects of circ-Luc7l knockdown on cell proliferation, inflammation, and ECM accumulation. MiR-205-5p bound to Tgfbr1 whose expression was negatively regulated by circ-Luc7l. Tgfbr1 overexpression also rescued the depletion effects of circ-Luc7l knockdown on cell proliferation, inflammation, and ECM accumulation. In HG conditions, increased circ-Luc7l upregulated Tgfbr1 expression via targeting miR-205-5p to induce DN progression.
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Affiliation(s)
- Zhan Fang
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Dan Wang
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Fang Sun
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Jing Chang
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Dong Yuan
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Shuhua Lin
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Jian Teng
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China.
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Liu S, Wang Y, Wang T, Shi K, Fan S, Li C, Chen R, Wang J, Jiang W, Zhang Y, Chen Y, Xu X, Yu Y, Li C, Li X. CircPCNXL2 promotes tumor growth and metastasis by interacting with STRAP to regulate ERK signaling in intrahepatic cholangiocarcinoma. Mol Cancer 2024; 23:35. [PMID: 38365721 PMCID: PMC10873941 DOI: 10.1186/s12943-024-01950-y] [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: 10/22/2023] [Accepted: 01/29/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND circular RNAs (circRNAs) have been reported to exert important effects in the progression of numerous cancers. However, the functions of circRNAs in intrahepatic cholangiocarcinoma (ICC) are still unclear. METHODS circPCNXL2 (has_circ_0016956) were identified in paired ICC by circRNA microarray. Then, we assessed the biological functions of circPCNXL2 by CCK8, EdU, clone formation, transwell, wound healing assays, and xenograft models. RNA pull-down, mass spectrometry, and RNA immunoprecipitation (RIP) were applied to explore the interaction between cirrcPCNXL2 and serine-threonine kinase receptor-associated protein (STRAP). RNA pull-down, RIP and luciferase reporter assays were used to investigate the sponge functions of circPCNXL2. In the end, we explore the effects of circPCNXL2 and trametinib (a MEK1/2 inhibitor) in vivo. RESULTS circPCNXL2 was upregulated in ICC tissues and cell lines, which promoted the proliferation and metastasis of ICC in vitro and in vivo. In terms of the mechanisms, circPCNXL2 could directly bind to STRAP and induce the interaction between STRAP and MEK1/2, resulting in the tumor promotion in ICC by activation of ERK/MAPK pathways. Besides, circPCNXL2 could regulate the expression of SRSF1 by sponging miR-766-3p and subsequently facilitated the growth of ICC. Finally, circPCNXL2 could partially inhibit the anti-tumor activity of trametinib in vivo. CONCLUSION circPCNXL2 played a crucial role in the progression of ICC by interacting with STRAP to activate the ERK signaling pathway, as well as by modulating the miR-766-3p/SRSF1 axis. These findings suggest that circPCNXL2 may be a promising biomarker and therapeutic target for ICC.
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Affiliation(s)
- Shuochen Liu
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yirui Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Tianlin Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Kuangheng Shi
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Shilong Fan
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Chang Li
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Ruixiang Chen
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Jifei Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Wangjie Jiang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yaodong Zhang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yananlan Chen
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Xiao Xu
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yue Yu
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Changxian Li
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China.
| | - Xiangcheng Li
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China.
- Wuxi People's Hospital, Wuxi Medical Center, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Nanjing Medical University, Wuxi, Jiangsu Province, China.
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Lun J, Guo J, Yu M, Zhang H, Fang J. Circular RNAs in inflammatory bowel disease. Front Immunol 2023; 14:1307985. [PMID: 38187401 PMCID: PMC10771839 DOI: 10.3389/fimmu.2023.1307985] [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: 10/05/2023] [Accepted: 12/07/2023] [Indexed: 01/09/2024] Open
Abstract
Inflammatory bowel disease (IBD) is a term encompassing a few chronic inflammatory disorders that leads to damage of the intestinal tract. Although much progress has been made in understanding the pathology of IBD, the precise pathogenesis is not completely understood. Circular RNAs (circRNAs) are single-stranded, covalently closed, endogenous molecules in eukaryotes with a variety of biological functions. CircRNAs have been shown to have regulatory effects in many diseases, such as cancer, cardiovascular disease, and neurological disorders. CircRNAs have also been found to play important roles in IBD, and although they are not sufficiently investigated in the context of IBD, a few circRNAs have been identified as potential biomarkers for the diagnosis and prognosis of IBD and as potential therapeutic targets for IBD. Herein, we survey recent progress in understanding the functions and roles of circRNAs in IBD and discuss their potential clinical applications.
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Affiliation(s)
- Jie Lun
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao Cancer Institute, Qingdao, China
| | - Jing Guo
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao Cancer Institute, Qingdao, China
| | - Mengchao Yu
- Central Laboratories, Qingdao Municipal Hospital, Qingdao, China
| | - Hongwei Zhang
- Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan, China
| | - Jing Fang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao Cancer Institute, Qingdao, China
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Wu B, Xia L, Zhang S, Jin K, Li L, Sun C, Xia T, Chen G. circRNA-SMO upregulates CEP85 to promote proliferation and migration of glioblastoma via sponging miR-326. Histol Histopathol 2023; 38:1307-1319. [PMID: 36718820 DOI: 10.14670/hh-18-587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Circular RNAs (circRNAs) play an important role in cancer development by sponging microRNAs (miRNAs) to regulate the signaling axis. However, more comprehensive mechanisms of circRNAs in glioblastoma need to be elucidated. RT-qPCR was used to detect the expression levels of circRNA-SMO and miR-326. Dual-luciferase reporter assays were conducted to verify the interaction among circRNA-SMO, miR-326, and CEP85. Flow cytometric analysis was performed to detect apoptosis. Western blotting was used to determine the protein levels of the different molecules. Animal xenograft experiments were performed to evaluate the role of circRNA-SMO in vivo. CircRNA-SMO was upregulated in glioblastoma tissues and glioblastoma cells. CircRNA-SMO downregulation inhibited the viability and colony-forming ability of the glioblastoma cells. In addition, miR-326 was downregulated in glioblastoma cells, which was verified to sponge circRNA-SMO and interact with CEP85. Moreover, circRNA-SMO inhibition induced the elevation of miR-326 and apoptosis, accompanied by a decrease in CEP85. CircRNA-SMO knockdown-mediated tumor inhibition was prevented by an miR-326 inhibitor. Furthermore, circRNA-SMO inhibition inhibited tumor growth in vivo, accompanied by an increase in miR-326 and a decline in CEP85 in tumor tissues. Conclusions. CircRNA-SMO sponges miR-326 to promote glioblastoma proliferation and migration by upregulating CEP85 expression. This study clarified the role of circRNA-SMO in the development of glioblastoma, providing novel insights for its treatment.
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Affiliation(s)
- Bin Wu
- Department of Neurosurgery, The Second Affiliated Hospital of Medical College of Zhejiang University, Hangzhou, Zhejiang Province, China
- Department of Neurosurgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
- Key Laboratory of Head and Neck Cancer Translational Research of Zhejiang Province, Hangzhou, Zhejiang Province, China
| | - Liang Xia
- Department of Neurosurgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
- Key Laboratory of Head and Neck Cancer Translational Research of Zhejiang Province, Hangzhou, Zhejiang Province, China
| | - Shuyuan Zhang
- Department of Neurosurgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
- Key Laboratory of Head and Neck Cancer Translational Research of Zhejiang Province, Hangzhou, Zhejiang Province, China
| | - Kai Jin
- Department of Neurosurgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
| | - Liwen Li
- Department of Neurosurgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
| | - Caixing Sun
- Department of Neurosurgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
- Key Laboratory of Head and Neck Cancer Translational Research of Zhejiang Province, Hangzhou, Zhejiang Province, China.
| | - Ting Xia
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
- Department of Gynecologic Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China.
| | - Gao Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Medical College of Zhejiang University, Hangzhou, Zhejiang Province, China.
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10
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Solati A, Thvimi S, Khatami SH, Shabaninejad Z, Malekzadegan Y, Alizadeh M, Mousavi P, Taheri-Anganeh M, Razmjoue D, Bahmyari S, Ghasemnejad-Berenji H, Vafadar A, Soltani Fard E, Ghasemi H, Movahedpour A. Non-coding RNAs in gynecologic cancer. Clin Chim Acta 2023; 551:117618. [PMID: 38375624 DOI: 10.1016/j.cca.2023.117618] [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: 09/03/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 02/21/2024]
Abstract
The term "gynecologic cancer" pertains to neoplasms impacting the reproductive tissues and organs of women encompassing the endometrium, vagina, cervix, uterus, vulva, and ovaries. The progression of gynecologic cancer is linked to various molecular mechanisms. Historically, cancer research primarily focused on protein-coding genes. However, recent years have unveiled the involvement of non-coding RNAs (ncRNAs), including microRNAs, long non-coding RNAs (LncRNAs), and circular RNAs, in modulating cellular functions within gynecological cancer. Substantial evidence suggests that ncRNAs may wield a dual role in gynecological cancer, acting as either oncogenic or tumor-suppressive agents. Numerous clinical trials are presently investigating the roles of ncRNAs as biomarkers and therapeutic agents. These endeavors may introduce a fresh perspective on the diagnosis and treatment of gynecological cancer. In this overview, we highlight some of the ncRNAs associated with gynecological cancers.
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Affiliation(s)
- Arezoo Solati
- Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sina Thvimi
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Seyyed Hossein Khatami
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Shabaninejad
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | | | - Mehdi Alizadeh
- Molecular Medicine Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Pegah Mousavi
- Molecular Medicine Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mortaza Taheri-Anganeh
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Damoun Razmjoue
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran; Department of Pharmacognosy, Faculty of Pharmacy, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sedigheh Bahmyari
- Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hojat Ghasemnejad-Berenji
- Reproductive Health Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Asma Vafadar
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Elahe Soltani Fard
- Department of Molecular Medicine, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
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11
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Derakhshan Z, Bahmanpour S, Alaee S, Fallahi J, Tabei SMB. The Role of Circular RNAs in Male Infertility and Reproductive Cancers: A Narrative Review. IRANIAN JOURNAL OF MEDICAL SCIENCES 2023; 48:527-541. [PMID: 38094281 PMCID: PMC10715113 DOI: 10.30476/ijms.2022.95302.2661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/01/2022] [Accepted: 08/28/2022] [Indexed: 12/18/2023]
Abstract
Infertility is a global health problem affecting about 15% of all couples, of which 50% are due to male infertility. Although the etiology of infertility is known in most infertile men, idiopathic male infertility remains a challenge. Therefore, there is a need for novel diagnostic methods to detect the underlying mechanisms and develop appropriate therapies. Recent studies have focused on the role of non-coding RNAs (ncRNAs) in male infertility. Circular RNAs (CircRNAs), a type of ncRNAs, are found to play a key role in the development of some pathological conditions, including cardiovascular diseases, diabetes, cancers, autoimmune diseases, etc. Several studies have reported the presence of CircRNAs and their target genes in the human reproductive system. In addition, their expression in testicular tissues, sperm cells, and seminal fluid has been identified. Abnormal expression of CircRNAs has been associated with azoospermia and asthenozoospermia in infertile men. The present narrative review provides a brief description of the role of CircRNAs in spermatogenic cells, male infertility, and reproductive cancers. In addition, some CircRNAs have been identified as potential biomarkers for disease detection and treatment.
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Affiliation(s)
- Zahra Derakhshan
- Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soghra Bahmanpour
- Department of Anatomy and Reproductive Biology, School of Medical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sanaz Alaee
- Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Jafar Fallahi
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Mohammad Bagher Tabei
- Department of Medical Genetics, School of Medical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Maternal-Fetal Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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12
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Zhang J, Chu G, Zheng L, Liu J, He J. Circular RNA circ_0000119 promotes cervical cancer cell growth and migration via miR-433-3p/PAK2 axis. J Appl Genet 2023; 64:531-543. [PMID: 37540462 DOI: 10.1007/s13353-023-00772-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 08/05/2023]
Abstract
The purpose of this study was to investigate the role of circ_0000119 on CC progression and its molecular mechanism. The expression levels of circ_0000119, miR-433-3p, and p21-activated kinase 2 (PAK2) in CC tissues and cell lines were measured by quantitative real-time polymerase chain reaction (qRT-PCR). Cell proliferation was assessed using 3-(4,5)-dimethylthiahiazo (-z-y1)-3,5-di-phenytetrazoliumromide (MTT) assay, 5-Ethynyl-2'-deoxyuridine (EdU) assay and colony formation assay. Cell cycle and apoptosis were assessed by flow cytometry. Cell migration and invasive ability were examined by Transwell assays. Downstream binding targets of circ_0000119 were predicted by online bioinformatics tools and confirmed by dual luciferase reporter gene assay, RNA immunoprecipitation (RIP) assay, and RNA pull-down assay. The role of circ_0000119/miR-433-3p/PAK2 axis in regulating the CC process was explored by rescue experiments. A xenograft model was constructed to further determine the effect of circ_0000119 on CC tumor growth in vivo. Immunohistochemistry (IHC) assay was conducted for Ki67 expression. Circ_0000119 was aberrantly upregulated in CC tissues and cell lines. Knockdown of circ_0000119 inhibited CC cell proliferation, cell cycle progress, migration, invasion, and promoted apoptosis of CC cells. MiR-433-3p was a binding target of circ_0000119, and PAK2 was a downstream gene of miR-433-3p. MiR-433-3p inhibition reversed the inhibitory effect of silencing circ_0000119 on CC progression. In addition, PAK2 overexpression reversed the effect of miR-433-3p on CC progression. PAK2 expression was regulated by circ_0000119 and miR-433-3p. Moreover, circ_0000119 knockdown reduced tumor growth of CC in vivo. Circ_0000119 was upregulated in CC, and circ_0000119 knockdown suppressed CC malignant development through the miR-433-3p/PAK2 axis.
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Affiliation(s)
- Junxiao Zhang
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China.
| | - Guanghua Chu
- Second Department of Gynecology, Northwest Women's and Children's Hospital, Xi'an , 710061, China
| | - Lihua Zheng
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China
| | - Juandi Liu
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China
| | - Juxian He
- Third Department of Gynecology, Northwest Women's and Children's Hospital, No. 1616, Yanxiang Road, Yanta District, Xi'an, 710061, People's Republic of China
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13
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Luo M, Miao YR, Ke YJ, Guo AY, Zhang Q. A comprehensive landscape of transcription profiles and data resources for human leukemia. Blood Adv 2023; 7:3435-3449. [PMID: 36595475 PMCID: PMC10362280 DOI: 10.1182/bloodadvances.2022008410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 01/04/2023] Open
Abstract
As a heterogeneous group of hematologic malignancies, leukemia has been widely studied at the transcriptome level. However, a comprehensive transcriptomic landscape and resources for different leukemia subtypes are lacking. Thus, in this study, we integrated the RNA sequencing data sets of >3000 samples from 14 leukemia subtypes and 53 related cell lines via a unified analysis pipeline. We depicted the corresponding transcriptomic landscape and developed a user-friendly data portal LeukemiaDB. LeukemiaDB was designed with 5 main modules: protein-coding gene, long noncoding RNA (lncRNA), circular RNA, alternative splicing, and fusion gene modules. In LeukemiaDB, users can search and browse the expression level, regulatory modules, and molecular information across leukemia subtypes or cell lines. In addition, a comprehensive analysis of data in LeukemiaDB demonstrates that (1) different leukemia subtypes or cell lines have similar expression distribution of the protein-coding gene and lncRNA; (2) some alternative splicing events are shared among nearly all leukemia subtypes, for example, MYL6 in A3SS, MYB in A5SS, HMBS in retained intron, GTPBP10 in mutually exclusive exons, and POLL in skipped exon; (3) some leukemia-specific protein-coding genes, for example, ABCA6, ARHGAP44, WNT3, and BLACE, and fusion genes, for example, BCR-ABL1 and KMT2A-AFF1 are involved in leukemogenesis; (4) some highly correlated regulatory modules were also identified in different leukemia subtypes, for example, the HOXA9 module in acute myeloid leukemia and the NOTCH1 module in T-cell acute lymphoblastic leukemia. In summary, the developed LeukemiaDB provides valuable insights into oncogenesis and progression of leukemia and, to the best of our knowledge, is the most comprehensive transcriptome resource of human leukemia available to the research community.
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Affiliation(s)
- Mei Luo
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, People’s Republic of China
- Center for Artificial Intelligence Biology, Hubei Bioinformatics & Molecular Imaging Key Laboratory, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Ya-Ru Miao
- Center for Artificial Intelligence Biology, Hubei Bioinformatics & Molecular Imaging Key Laboratory, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Ya-Juan Ke
- Dian Diagnostics Group Co, Ltd, Hangzhou, China
- Key Laboratory of Digital Technology in Medical Diagnostics of Zhejiang Province, Hangzhou, China
| | - An-Yuan Guo
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Center for Artificial Intelligence Biology, Hubei Bioinformatics & Molecular Imaging Key Laboratory, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Qiong Zhang
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
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14
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Gu Y, Becker MA, Müller L, Reuss K, Umlauf F, Tang T, Menger MD, Laschke MW. MicroRNAs in Tumor Endothelial Cells: Regulation, Function and Therapeutic Applications. Cells 2023; 12:1692. [PMID: 37443725 PMCID: PMC10340284 DOI: 10.3390/cells12131692] [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: 05/18/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Tumor endothelial cells (TECs) are key stromal components of the tumor microenvironment, and are essential for tumor angiogenesis, growth and metastasis. Accumulating evidence has shown that small single-stranded non-coding microRNAs (miRNAs) act as powerful endogenous regulators of TEC function and blood vessel formation. This systematic review provides an up-to-date overview of these endothelial miRNAs. Their expression is mainly regulated by hypoxia, pro-angiogenic factors, gap junctions and extracellular vesicles, as well as long non-coding RNAs and circular RNAs. In preclinical studies, they have been shown to modulate diverse fundamental angiogenesis-related signaling pathways and proteins, including the vascular endothelial growth factor (VEGF)/VEGF receptor (VEGFR) pathway; the rat sarcoma virus (Ras)/rapidly accelerated fibrosarcoma (Raf)/mitogen-activated protein kinase kinase (MEK)/extracellular signal-regulated kinase (ERK) pathway; the phosphoinositide 3-kinase (PI3K)/AKT pathway; and the transforming growth factor (TGF)-β/TGF-β receptor (TGFBR) pathway, as well as krüppel-like factors (KLFs), suppressor of cytokine signaling (SOCS) and metalloproteinases (MMPs). Accordingly, endothelial miRNAs represent promising targets for future anti-angiogenic cancer therapy. To achieve this, it will be necessary to further unravel the regulatory and functional networks of endothelial miRNAs and to develop safe and efficient TEC-specific miRNA delivery technologies.
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Affiliation(s)
- Yuan Gu
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Saar, Germany; (M.A.B.); (L.M.); (K.R.); (F.U.); (T.T.); (M.D.M.); (M.W.L.)
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15
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Li G, Zhu X, Wang Y, Ma H, Wang Y, Wu H, Li X, Wang Y, Gao J, Chen X, Huang X, Yao Y, Hu X. Transcription-wide impact by RESCUE-induced off-target single-nucleotide variants in mammalian cells. J Mol Cell Biol 2023; 15:mjad011. [PMID: 36822625 PMCID: PMC10485882 DOI: 10.1093/jmcb/mjad011] [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: 07/19/2022] [Revised: 02/19/2023] [Accepted: 02/22/2023] [Indexed: 02/25/2023] Open
Abstract
RNA base editing is a promising tool in precise molecular therapy. Currently, there are two widely used RNA base editors, REPAIR and RESCUE. REPAIR only facilitates A-to-I conversions, while RESCUE performs both A-to-I and C-to-U conversions. Thus, RESCUE can generate twice the number of mutations compared to REPAIR. However, transcription-wide impact due to RESCUE-induced off-target single-nucleotide variants (SNVs) is not fully appreciated. Therefore, to determine the off-target effects of RESCUE-mediated editing, we employed transcription-wide sequencing on cells edited by RESCUE. The SNVs showed different off-target effects on mRNA, circRNA, lncRNA, and miRNA expression patterns and their interacting networks. Our results illustrate the transcription-wide impact of RESCUE-induced off-target SNVs and highlight the need for careful characterization of the off-target impact by this editing platform.
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Affiliation(s)
- Guo Li
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Xiaoning Zhu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yihan Wang
- National Research Institute for Family Planning, Beijing 100081, China
| | - Hongru Ma
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
| | - Yuzhe Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Hanyu Wu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Xiangyang Li
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yiling Wang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
| | - Jianen Gao
- National Research Institute for Family Planning, Beijing 100081, China
| | - Xuexin Chen
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | | | - Yuan Yao
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
| | - Xiaoxiang Hu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
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16
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Gopikrishnan M, R HC, R G, Ashour HM, Pintus G, Hammad M, Kashyap MK, C GPD, Zayed H. Therapeutic and diagnostic applications of exosomal circRNAs in breast cancer. Funct Integr Genomics 2023; 23:184. [PMID: 37243750 DOI: 10.1007/s10142-023-01083-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 05/29/2023]
Abstract
Circular RNAs (circRNAs) are regulatory elements that are involved in orchestrating gene expression and protein functions and are implicated in various biological processes including cancer. Notably, breast cancer has a significant mortality rate and is one of the most common malignancies in women. CircRNAs have been demonstrated to contribute to the pathogenesis of breast cancer including its initiation, progression, metastasis, and resistance to drugs. By acting as miRNA sponges, circRNAs can indirectly influence gene expression by disrupting miRNA regulation of their target genes, ultimately altering the course of cancer development and progression. Additionally, circRNAs can interact with proteins and modulate their functions including signaling pathways involved in the initiation and development of cancer. Recently, circRNAs can encode peptides that play a role in the pathophysiology of breast cancer and other diseases and their potential as diagnostic biomarkers and therapeutic targets for various cancers including breast cancer. CircRNAs possess biomarkers that differentiate, such as stability, specificity, and sensitivity, and can be detected in several biological specimens such as blood, saliva, and urine. Moreover, circRNAs play an important role in various cellular processes including cell proliferation, differentiation, and apoptosis, all of which are integral factors in the development and progression of cancer. This review synthesizes the functions of circRNAs in breast cancer, scrutinizing their contributions to the onset and evolution of the disease through their interactions with exosomes and cancer-related intracellular pathways. It also delves into the potential use of circRNA as a biomarker and therapeutic target against breast cancer. It discusses various databases and online tools that offer crucial circRNA information and regulatory networks. Lastly, the challenges and prospects of utilizing circRNAs in clinical settings associated with breast cancer are explored.
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Affiliation(s)
- Mohanraj Gopikrishnan
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Hephzibah Cathryn R
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Gnanasambandan R
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Hossam M Ashour
- Department of Integrative Biology, College of Arts and Sciences, University of South Florida, St. Petersburg, Florida, 33701, USA
| | - Gianfranco Pintus
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy
| | - Mohamed Hammad
- Department of Stem Cell Biology and Regenerative Medicine, City of Hope Beckman Research Institute, Duarte, California, USA
| | - Manoj Kumar Kashyap
- Amity Stem Cell Institute, Amity Medical School, Amity University Haryana, Manesar (Gurugram), Panchgaon, Haryana (HR), 122413, India
- Clinical Biosamples & Research Services (CBRS), Noida, Uttar Pradesh, 201301, India
| | - George Priya Doss C
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India.
| | - Hatem Zayed
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, 2713, Doha, Qatar.
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17
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Ren XD, Su N, Sun XG, Li WM, Li J, Li BW, Li RX, Lv J, Xu QY, Kong WL, Huang Q. Advances in liquid biopsy-based markers in NSCLC. Adv Clin Chem 2023; 114:109-150. [PMID: 37268331 DOI: 10.1016/bs.acc.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Lung cancer is the second most-frequently occurring cancer and the leading cause of cancer-associated deaths worldwide. Non-small cell lung cancer (NSCLC), the most common type of lung cancer is often diagnosed in middle or advanced stages and have poor prognosis. Diagnosis of disease at an early stage is a key factor for improving prognosis and reducing mortality, whereas, the currently used diagnostic tools are not sufficiently sensitive for early-stage NSCLC. The emergence of liquid biopsy has ushered in a new era of diagnosis and management of cancers, including NSCLC, since analysis of circulating tumor-derived components, such as cell-free DNA (cfDNA), circulating tumor cells (CTCs), cell-free RNAs (cfRNAs), exosomes, tumor-educated platelets (TEPs), proteins, and metabolites in blood or other biofluids can enable early cancer detection, treatment selection, therapy monitoring and prognosis assessment. There have been great advances in liquid biopsy of NSCLC in the past few years. Hence, this chapter introduces the latest advances on the clinical application of cfDNA, CTCs, cfRNAs and exosomes, with a particular focus on their application as early markers in the diagnosis, treatment and prognosis of NSCLC.
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Affiliation(s)
- Xiao-Dong Ren
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Ning Su
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Xian-Ge Sun
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Wen-Man Li
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Jin Li
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Bo-Wen Li
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Ruo-Xu Li
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Jing Lv
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Qian-Ying Xu
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Wei-Long Kong
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China
| | - Qing Huang
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, P.R. China.
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Chen G, Li Y, Cao J, Dai Y, Cong Y, Qiao G. Construction and analysis of a survival-associated competing endogenous RNA network in breast cancer. Front Surg 2023; 9:1021195. [PMID: 36684328 PMCID: PMC9852745 DOI: 10.3389/fsurg.2022.1021195] [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: 08/17/2022] [Accepted: 11/24/2022] [Indexed: 01/07/2023] Open
Abstract
Background Recently, increasing studies have shown that non-coding RNAs are closely associated with the progression and metastasis of cancer by participating in competing endogenous RNA (ceRNA) networks. However, the role of survival-associated ceRNAs in breast cancer (BC) remains unknown. Methods The Gene Expression Omnibus database and The Cancer Genome Atlas BRCA_dataset were used to identify differentially expressed RNAs. Furthermore, circRNA-miRNA interactions were predicted based on CircInteractome, while miRNA-mRNA interactions were predicted based on TargetScan, miRDB, and miRTarBase. The survival-associated ceRNA networks were constructed based on the predicted circRNA-miRNA and miRNA-mRNA pairs. Finally, the mechanism of miRNA-mRNA pairs was determined. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of survival-related mRNAs were performed using the hypergeometric distribution formula in R software.The prognosis of hub genes was confirmed using gene set enrichment analysis. Results Based on the DE-circRNAs of the top 10 initial candidates, 162 DE-miRNAsand 34 DE-miRNAs associated with significant overall survival were obtained. The miRNA target genes were then identified using online tools and verified using the Cancer Genome Atlas (TCGA) database. Overall, 46 survival-associated DE-mRNAs were obtained. The results of GO and KEGG pathway enrichment analyses implied that up-regulated survival-related DE-mRNAs were mostly enriched in the "regulation of cell cycle" and "chromatin" pathways, while down-regulated survival-related DE-mRNAs were mostly enriched in "negative regulation of neurotrophin TRK receptor signaling" and "interleukin-6 receptor complex" pathways. Finally, the survival-associated circRNA-miRNA-mRNA ceRNA network was constructed using 34 miRNAs, 46 mRNAs, and 10 circRNAs. Based on the PPI network, two ceRNA axes were identified. These ceRNA axescould be considered biomarkers for BC.GSEA results revealed that the hub genes were correlated with "VANTVEER_BREAST_CANCER_POOR_PROGNOSIS", and the hub genes were verified using BC patients' tissues. Conclusions In this study, we constructed a circRNA-mediated ceRNA network related to BC. This network provides new insight into discovering potential biomarkers for diagnosing and treating BC.
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Affiliation(s)
- Gang Chen
- Department of Breast Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yalun Li
- Department of Breast Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Jianqiao Cao
- Department of Breast Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yuanping Dai
- Department of Medical Genetics, Liuzhou Maternal and Child Health Hospital, Liuzhou, China
| | - Yizi Cong
- Department of Breast Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China,Correspondence: Guangdong Qiao Yizi Cong
| | - Guangdong Qiao
- Department of Breast Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China,Correspondence: Guangdong Qiao Yizi Cong
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Mei Z, Huang L, Rao W. CircNUFIP2 overexpression induces GDF11 to ameliorate oxygen-glucose deprivation-induced hippocampal neuron cell apoptosis and oxidative stress after cerebral ischemia. Neurol Res 2023; 45:70-80. [PMID: 36328251 DOI: 10.1080/01616412.2022.2123172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Previous data have indicated the regulation of circular RNA (circRNA) toward cerebral ischemia. This study aims to reveal the effects of circNUFIP2 on cerebral ischemia and the underlying mechanism. Methods Oxygen-glucose deprivation (OGD) hippocampal neuron (HT22) cell model and middle cerebral artery occlusion (MCAO) mouse model were used for this study. The expression of circRNA nuclear FMR1 interacting protein 2 (circNUFIP2), microRNA-1224-5p (miR-1224-5p) and growth differentiation factor 11 (GDF11) was detected by quantitative real-time polymerase-chain reaction. Protein expression was checked by Western blotting. The binding relationships among circNUFIP2, miR-1224-5p and GDF11 were identified by dual-luciferase reporter assay, RNA pull-down assay, and RNA immunoprecipitation assay. Cell proliferation and apoptosis were investigated by 5-Ethynyl-29-deoxyuridine and flow cytometry analysis, respectively. Results CircNUFIP2 and GDF11 expression were decreased, but miR-1224-5p was increased in OGD-treated HT22 cells when compared with their expression in control groups. OGD treatment inhibited HT22 cell proliferation but induced cell apoptosis and oxidative stress; however, these effects were attenuated after circNUFIP2 overexpression. Also, circNUFIP2 upregulation assuaged the cerebral infarction of MCAO mice. Besides, circNUFIP2 bound to miR-1224-5p and mediated OGD-induced HT22 cell damage through miR-1224-5p. Meanwhile, knockdown of GDF11, a target gene of miR-1224-5p, relieved miR-1224-5p depletion-caused effects in OGD-treated HT22 cells. Furthermore, circNUFIP2 regulated GDF11 expression by interacting with miR-1224-5p. Conclusion CircNUFIP2 overexpression protected neuron cells against cerebral ischemia-induced damage, at least in part, by the miR-1224-5p/GDF11 pathway, providing a possible target for the therapy of cerebral ischemic stroke.
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Affiliation(s)
- Zhujun Mei
- Department of Neurology, Jiangxi Provincial People's Hospital, the First Affiliated Hospital of Nanchang Medical College, Nanchang City, Jiangxi Province, China
| | - LinLing Huang
- Department of Gynecology, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang City, Jiangxi Province, China
| | - Wei Rao
- Department of Neurology, Jiangxi Provincial People's Hospital, the First Affiliated Hospital of Nanchang Medical College, Nanchang City, Jiangxi Province, China
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Braga EA, Fridman MV, Burdennyy AM, Filippova EA, Loginov VI, Pronina IV, Dmitriev AA, Kushlinskii NE. Regulation of the Key Epithelial Cancer Suppressor miR-124 Function by Competing Endogenous RNAs. Int J Mol Sci 2022; 23:13620. [PMID: 36362406 PMCID: PMC9655303 DOI: 10.3390/ijms232113620] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 12/01/2023] Open
Abstract
A decrease in the miR-124 expression was observed in various epithelial cancers. Like a classical suppressor, miR-124 can inhibit the translation of multiple oncogenic proteins. Epigenetic mechanisms play a significant role in the regulation of miR-124 expression and involve hypermethylation of the MIR-124-1/-2/-3 genes and the effects of long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs) according to the model of competing endogenous RNAs (ceRNAs). More than 40 interactomes (lncRNA/miR-124/mRNA) based on competition between lncRNAs and mRNAs for miR-124 binding have been identified in various epithelial cancers. LncRNAs MALAT1, NEAT1, HOXA11-AS, and XIST are the most represented in these axes. Fourteen axes (e.g., SND1-IT1/miR-124/COL4A1) are involved in EMT and/or metastasis. Moreover, eight axes (e.g., OIP5-AS1/miR-124-5p/IDH2) are involved in key pathways, such as Wnt/b-catenin, E2F1, TGF-β, SMAD, ERK/MAPK, HIF-1α, Notch, PI3K/Akt signaling, and cancer cell stemness. Additionally, 15 axes impaired patient survival and three axes reduced chemo- or radiosensitivity. To date, 14 cases of miR-124 regulation by circRNAs have been identified. Half of them involve circHIPK3, which belongs to the exonic ecircRNAs and stimulates cell proliferation, EMT, autophagy, angiogenesis, and multidrug resistance. Thus, miR-124 and its interacting partners may be considered promising targets for cancer therapy.
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Affiliation(s)
- Eleonora A. Braga
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia
- Research Centre for Medical Genetics, 115522 Moscow, Russia
| | - Marina V. Fridman
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia
| | | | - Elena A. Filippova
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia
| | - Vitaly I. Loginov
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia
- Research Centre for Medical Genetics, 115522 Moscow, Russia
| | - Irina V. Pronina
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
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Wang S, Li W, Yang L, Yuan J, Wang L, Li N, Zhao H. CircPVT1 facilitates the progression of oral squamous cell carcinoma by regulating miR-143-3p/SLC7A11 axis through MAPK signaling pathway. Funct Integr Genomics 2022; 22:891-903. [PMID: 35624316 DOI: 10.1007/s10142-022-00865-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/07/2022] [Accepted: 04/30/2022] [Indexed: 11/04/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is a common malignant tumor occurring in the oral cavity. Circular RNAs (circRNAs) play a crucial regulatory role in many cancers. This study aimed to investigate the function of circRNA plasmacytoma variant translocation 1 (PVT1) (circPVT1) in OSCC and its potential mechanism. The levels of circPVT1, solute carrier family 7 member 11 (SLC7A11), and microRNA-143-3p (miR-143-3p) were examined by quantitative real-time PCR (qRT-PCR) or western blot assay. Cell proliferation, apoptosis, migration, and invasion were evaluated by Cell Counting Kit-8 (CCK-8), colony formation assay, flow cytometry, and transwell assay. The levels of apoptosis and proliferation-related proteins were examined by western blot. The targeting relationship between miR-143-3p and circPVT1 or SLC7A11 was verified by dual-luciferase reporter, RNA immunoprecipitation (RIP), and RNA pull-down assays. The levels of mitogen-activated protein kinase (MAPK) pathway-related proteins were measured by western blot. Xenograft assay was used to assess tumor growth in vivo. CircPVT1 and SLC7A11 were upregulated, while miR-143-3p was downregulated in OSCC tissues and cells. Silencing of circPVT1 or SLC7A11 suppressed proliferation, migration, and invasion and promoted apoptosis in OSCC cells. CircPVT1 upregulated SLC7A11 expression via sponging miR-143-3p. SLC7A11 upregulation alleviated the effect of circPVT1 knockdown on OSCC cell progression. Besides, circPVT1 modulated MAPK signaling pathway by regulating miR-143-3p. Moreover, circPVT1 knockdown inhibited tumor growth in vivo. Knockdown of circPVT1 impeded OSCC progression via the miR-143-3p/SLC7A11 axis through MAPK signaling pathway.
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Affiliation(s)
- Shiliang Wang
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Wenlu Li
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Long Yang
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Jianqiao Yuan
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Lin Wang
- Department of Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Na Li
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Hongyu Zhao
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China.
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Yi G, Wang D, Han J, Jia L, Liu X, He J. circKLHL24 Blocks Breast Cancer Development by Regulating the miR-1204/ ALX4 Network. Cancer Biother Radiopharm 2022; 37:684-696. [PMID: 33781094 DOI: 10.1089/cbr.2020.3992] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background: Breast cancer is a major challenge affecting women's survival. Circular RNAs have been demonstrated to be vital regulators in the pathogenesis of human cancers. The authors' objective was to determine the functional role and mechanism of circKLHL24 in breast cancer development. Materials and Methods: The expression of circKLHL24, miR-1204, and aristaless-like 4 (ALX4) mRNA was measured using quantitative real-time polymerase chain reaction. The effects on cell viability, proliferation, migration/invasion, and glycolysis were identified using the Cell Counting Kit-8 (CCK-8) assay, colony formation assay, Transwell assay, and glycolysis stress test, respectively. For glycolysis progression analysis, glucose consumption and lactate production were assessed using corresponding kits, and the expression of glycolysis-related proteins was detected by Western blot. The putative interactions between miR-1204 and circKLHL24 or ALX4 were validated by dual-luciferase reporter assay or RNA pull-down assay. The expression of ALX4 at the protein level was detected by Western blot. Animal study was performed to clarify the role of circKLHL24 in vivo. Results: circKLHL24 and ALX4 were downregulated, while miR-1204 was upregulated in breast cancer tissues and cells. circKLHL24 overexpression blocked cell viability, colony formation, migration/invasion, and glycolysis progression. circKLHL24 competitively targeted miR-1204, and miR-1204 reintroduction reversed the effects of circKLHL24 restoration. miR-1204 bound to ALX4, and circKLHL24 sponged miR-1204 to upregulate ALX4. Cell viability, colony formation, migration/invasion, and glycolysis progression suppressed by miR-1204 deficiency were recovered by ALX4 knockdown. Besides, circKLHL24 blocked tumor growth in vivo by regulating miR-1204 and ALX4. Conclusions: circKLHL24 blocked the progression of breast cancer by activating ALX4 through targeting miR-1204, which might be a novel perspective to understand the pathogenesis of breast cancer.
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Affiliation(s)
- Guangming Yi
- Department of Oncology, The Third Hospital of Mianyang (Sichuan Mental Health Center), Mianyang City, China
| | - Dan Wang
- Department of Radiology, Mianyang Central Hospital, Mianyang City, China
| | - Jianjun Han
- Department of Oncology, The Third Hospital of Mianyang (Sichuan Mental Health Center), Mianyang City, China
| | - Li Jia
- Department of Oncology, The Third Hospital of Mianyang (Sichuan Mental Health Center), Mianyang City, China
| | - Xiaojun Liu
- Department of Oncology, The Third Hospital of Mianyang (Sichuan Mental Health Center), Mianyang City, China
| | - Jun He
- Department of Oncology, The Third Hospital of Mianyang (Sichuan Mental Health Center), Mianyang City, China
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Gong Z, Rong X, Li X, Wang H, Liu D, He L, Pan J, Shen Q, Peng Y. Male mice exposed to chronic intermittent ethanol exposure exhibit significant upregulation or downregulation of circular RNAs. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2022; 48:562-572. [PMID: 35838410 DOI: 10.1080/00952990.2022.2073449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
B a ckground: Circular RNAs (circRNAs) have been crucially implicated in various diseases, however, their involvement in chronic intermittent ethanol (CIE) exposure remains unclear.O bjective: The present study was conducted to evaluate the circular RNA expression alteration in brain samples and to identify the molecular mechanisms underlying chronic intermittent ethanol exposure.M ethods: Male C57BL/6J mice (10 for each group) were given 4 weeks of chronic intermittent ethanol exposure. Whole brain samples were collected for high-throughput sequencing and circRNA bioinformatic analysis. Real-time quantitative PCR (RI-qPCR) and agarose electrophoresis were used to validate the differentially expressed circRNAs. Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes pathway (KEGG) analysis were performed. A p level < 0.05 was considered statistically significant.R esults: Compared with the control group and baseline values, the CIE group showed a significant increase in ethanol intake. High-throughput sequencing revealed 399 significantly different circRNAs in CIE mice, including 150 up-regulated circRNAs and 249 down-regulated circRNAs. GO analysis showed that the most significantly enriched term for biological process, cellular component, and molecular function were GO:0050885, GO:0016020 and GO:0005515, respectively. The most enriched pathways in KEGG analysis were GABAergic synapse (mmu04727), followed by retrograde endocannabinoid (eCB) signaling (mmu04723) and morphine addiction (mmu05032). Among the circRNAs, RT-qPCR confirmed 14 upregulated and 13 downregulated circRNAs in the brain tissues with 9 upregulated and 10 downregulated circRNAs being observed in blood samples.C onclusions: Our study suggests that chronic ethanol exposure upregulates or downregulates circRNAs in the brain, which, in turn, could alter neurotransmitter release and signal transduction.
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Affiliation(s)
- Zhe Gong
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China.,Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoming Rong
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Xiangpen Li
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Hongxuan Wang
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Dandan Liu
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Lei He
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Jingrui Pan
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Qingyu Shen
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China
| | - Ying Peng
- Memorial Hospital, Sun Yat-sen UniversityDepartment of Neurology, Sun Yat-sen, Guangzhou, China.,Memorial Hospital, Sun Yat-sen UniversityGuangdong Provincial Key Laboratory of Malignant Tumour Epigenetics and Gene Regulation, Sun Yat-sen, Guangzhou, China
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24
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Hua T, Luo Y. Circular RNA PVT1 promotes progression of thyroid cancer by competitively binding miR‑384. Exp Ther Med 2022; 24:629. [PMID: 36185502 PMCID: PMC9520360 DOI: 10.3892/etm.2022.11566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/30/2022] [Indexed: 11/06/2022] Open
Abstract
Plasmacytoma variant translocation 1 circular RNA (circPVT1) is involved in the initiation and development of several types of cancer. However, the underlying molecular role of circPVT1 in tumorigenesis of thyroid cancer remains to be elucidated. In the present study, relative expression of circPVT1 was markedly upregulated in thyroid cancer compared with adjacent normal tissue. circPVT1 expression was associated with clinical stage and lymph node metastasis. Furthermore, Cell Counting Kit-8, colony formation and Transwell chamber assays demonstrated that knockdown of circPVT1 decreased proliferation, migration and invasion of thyroid cancer cells in vitro. Moreover, circPVT1 directly interacted with microRNA (miR)-384, as shown by bioinformatics prediction and dual luciferase and RNA pull-down assay. miR-384 inhibition partially reversed the circPVT1 knockdown-mediated inhibitory effect on proliferation, migration and invasion of thyroid cancer cells. In summary, these findings demonstrated that circPVT1 may be a potential therapeutic target for thyroid cancer.
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Affiliation(s)
- Tebo Hua
- Department of Thyroid Breast Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo, Zhejiang 315040, P.R. China
| | - Yong Luo
- Department of Thyroid Breast Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo, Zhejiang 315040, P.R. China
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Profile of TREM2-Derived circRNA and mRNA Variants in the Entorhinal Cortex of Alzheimer’s Disease Patients. Int J Mol Sci 2022; 23:ijms23147682. [PMID: 35887031 PMCID: PMC9320643 DOI: 10.3390/ijms23147682] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 02/04/2023] Open
Abstract
Genetic variants in TREM2, a microglia-related gene, are well-known risk factors for Alzheimer’s disease (AD). Here, we report that TREM2 originates from circular RNAs (circRNAs), a novel class of non-coding RNAs characterized by a covalent and stable closed-loop structure. First, divergent primers were designed to amplify circRNAs by RT-PCR, which were further assessed by Sanger sequencing. Then, additional primer sets were used to confirm back-splicing junctions. In addition, HMC3 cells were used to assess the microglial expression of circTREM2s. Three candidate circTREM2s were identified in control and AD human entorhinal samples. One of the circRNAs, circTREM2_1, was consistently amplified by all divergent primer sets in control and AD entorhinal cortex samples as well as in HMC3 cells. In AD cases, a moderate negative correlation (r = −0.434) was found between the global average area of Aβ deposits in the entorhinal cortex and circTREM2_1 expression level. In addition, by bioinformatics tools, a total of 16 miRNAs were predicted to join with circTREM2s. Finally, TREM2 mRNA corresponding to four isoforms was profiled by RT-qPCR. TREM2 mRNA levels were found elevated in entorhinal samples of AD patients with low or intermediate ABC scores compared to controls. To sum up, a novel circRNA derived from the TREM2 gene, circTREM2_1, has been identified in the human entorhinal cortex and TREM2 mRNA expression has been detected to increase in AD compared to controls. Unraveling the molecular genetics of the TREM2 gene may help to better know the innate immune response in AD.
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Guo L, Jia L, Luo L, Xu X, Xiang Y, Ren Y, Ren D, Shen L, Liang T. Critical Roles of Circular RNA in Tumor Metastasis via Acting as a Sponge of miRNA/isomiR. Int J Mol Sci 2022; 23:ijms23137024. [PMID: 35806027 PMCID: PMC9267010 DOI: 10.3390/ijms23137024] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs), a class of new endogenous non-coding RNAs (ncRNAs), are closely related to the carcinogenic process and play a critical role in tumor metastasis. CircRNAs can lay the foundation for tumor metastasis via promoting tumor angiogenesis, make tumor cells gain the ability of migration and invasion by regulating epithelial-mesenchymal transition (EMT), interact with immune cells, cytokines, chemokines, and other non-cellular components in the tumor microenvironment, damage the normal immune function or escape the immunosuppressive network, and further promote cell survival and metastasis. Herein, based on the characteristics and biological functions of circRNA, we elaborated on the effect of circRNA via circRNA-associated competing endogenous RNA (ceRNA) network by acting as miRNA/isomiR sponges on tumor angiogenesis, cancer cell migration and invasion, and interaction with the tumor microenvironment (TME), then explored the potential interactions across different RNAs, and finally discussed the potential clinical value and application as a promising biomarker. These results provide a theoretical basis for the further application of metastasis-related circRNAs in cancer treatment. In summary, we briefly summarize the diverse roles of a circRNA-associated ceRNA network in cancer metastasis and the potential clinical application, especially the interaction of circRNA and miRNA/isomiR, which may complicate the RNA regulatory network and which will contribute to a novel insight into circRNA in the future.
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Affiliation(s)
- Li Guo
- Smart Health Big Data Analysis and Location Services Engineering Laboratory of Jiangsu Province, Department of Bioinformatics, School of Geographic and Biologic Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, China; (L.G.); (Y.X.); (Y.R.); (D.R.)
| | - Lin Jia
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China; (L.J.); (L.L.); (X.X.); (L.S.)
| | - Lulu Luo
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China; (L.J.); (L.L.); (X.X.); (L.S.)
| | - Xinru Xu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China; (L.J.); (L.L.); (X.X.); (L.S.)
| | - Yangyang Xiang
- Smart Health Big Data Analysis and Location Services Engineering Laboratory of Jiangsu Province, Department of Bioinformatics, School of Geographic and Biologic Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, China; (L.G.); (Y.X.); (Y.R.); (D.R.)
| | - Yujie Ren
- Smart Health Big Data Analysis and Location Services Engineering Laboratory of Jiangsu Province, Department of Bioinformatics, School of Geographic and Biologic Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, China; (L.G.); (Y.X.); (Y.R.); (D.R.)
| | - Dekang Ren
- Smart Health Big Data Analysis and Location Services Engineering Laboratory of Jiangsu Province, Department of Bioinformatics, School of Geographic and Biologic Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, China; (L.G.); (Y.X.); (Y.R.); (D.R.)
| | - Lulu Shen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China; (L.J.); (L.L.); (X.X.); (L.S.)
| | - Tingming Liang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China; (L.J.); (L.L.); (X.X.); (L.S.)
- Correspondence:
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27
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Osca-Verdegal R, Beltrán-García J, Górriz JL, Martínez Jabaloyas JM, Pallardó FV, García-Giménez JL. Use of Circular RNAs in Diagnosis, Prognosis and Therapeutics of Renal Cell Carcinoma. Front Cell Dev Biol 2022; 10:879814. [PMID: 35813211 PMCID: PMC9257016 DOI: 10.3389/fcell.2022.879814] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/31/2022] [Indexed: 12/12/2022] Open
Abstract
Renal cell carcinoma is the most common type of kidney cancer, representing 90% of kidney cancer diagnoses, and the deadliest urological cancer. While the incidence and mortality rates by renal cell carcinoma are higher in men compared to women, in both sexes the clinical characteristics are the same, and usually unspecific, thereby hindering and delaying the diagnostic process and increasing the metastatic potential. Regarding treatment, surgical resection remains the main therapeutic strategy. However, even after radical nephrectomy, metastasis may still occur in some patients, with most metastatic renal cell carcinomas being resistant to chemotherapy and radiotherapy. Therefore, the identification of new biomarkers to help clinicians in the early detection, and treatment of renal cell carcinoma is essential. In this review, we describe circRNAs related to renal cell carcinoma processes reported to date and propose the use of some in therapeutic strategies for renal cell carcinoma treatment.
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Affiliation(s)
- Rebeca Osca-Verdegal
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Jesús Beltrán-García
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
| | - José Luis Górriz
- Department of Nephrology, University Clinic Hospital, INCLIVA, University of Valencia, Valencia, Spain
| | | | - Federico V. Pallardó
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
| | - José Luis García-Giménez
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
- EpiDisease S.L. (Spin-Off CIBER-ISCIII), Parc Científic de la Universitat de València, Valencia, Spain
- *Correspondence: José Luis García-Giménez,
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Yan D, Liu W, Liu Y, Zhu X. Circular RNA circ_0065378 upregulates tumor suppressor candidate 1 by competitively binding with miR-4701-5p to alleviate colorectal cancer progression. J Gastroenterol Hepatol 2022; 37:1107-1118. [PMID: 35434854 DOI: 10.1111/jgh.15862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIM Colorectal cancer (CRC), the third most lethal human cancer worldwide, seriously threatens human health and life. Numerous circular RNAs (circRNAs) including circ_PLXNB1 (hsa_circ_0065378) have been confirmed to be dysregulated in CRC by RNA-seq analysis. We aimed to explore the functional role of circ_PLXNB1 in CRC malignant behaviors and clarify its potential molecular mechanism. METHODS Gene expression levels of circ_PLXNB1 and miR-4701-5p were determined by quantitative real-time polymerase chain reaction analysis. MTT and Transwell assays were conducted to measure cell proliferation, invasion, and migration. Protein expression of tumor suppressor candidate 1 (TUSC1), E-cadherin and N-cadherin was determined by western blot analysis. Mouse xenograft models were used to investigate the role of circ_PLXNB1 in tumor growth. RESULTS The results showed that gene expression of circ_PLXNB1 in CRC tissues was significantly downregulated. Overexpression of circ_PLXNB1 inhibited the malignant behaviors of CRC cells, as manifested by the decrease in cell proliferation, cell invasion, migration, and EMT. Mechanistically, circ_PLXNB1 exerted its functional effects by binding with miR-4701-5p. Moreover, TUSC1 siRNA partially abolished the suppressive effect of the miR-4701-5p inhibitor or circ_PLXNB1 on CRC cell malignant behaviors. CONCLUSIONS Circ_PLXNB1 attenuated CRC progression by binding with miR-4701-5p to overexpress TUSC1, indicating that the circ_PLXNB1/miR-4701-5p/TUSC1 axis might be a potential novel molecular target in CRC diagnosis and therapy.
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Affiliation(s)
- Dongsheng Yan
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Gastroenterological Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Weidong Liu
- Department of Gastroenterological Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Yeliu Liu
- Department of Gastroenterological Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Xinguo Zhu
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
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Ma S, Adzavon YM, Wen X, Zhao P, Xie F, Liu M, Ma X. Novel Insights in the Regulatory Mechanisms of Ferroptosis in Hepatocellular Carcinoma. Front Cell Dev Biol 2022; 10:873029. [PMID: 35663406 PMCID: PMC9160826 DOI: 10.3389/fcell.2022.873029] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/05/2022] [Indexed: 12/12/2022] Open
Abstract
Ferroptosis is a newly defined programmed cell death, which by its mechanism differs from other programmed cell death processes such as apoptosis, necrosis, and autophagy. It has a unique morphology and biological properties that antioxidants and iron-chelating agents can regulate. Ferroptosis has the characteristics of iron ion deposition and dependence on lipid peroxidation. It can affect the progression of many cancers, including liver cancer, by inducing an intracellular iron-dependent accumulation of reactive oxygen species, providing new possibilities for cancer treatment. At present, great progress has been made in exploring the molecular mechanism of ferroptosis. In this review, we summarize the characteristics, mechanisms, and regulatory factors of ferroptosis in detail, discuss the progress of ferroptosis research in liver cancer, and provide directions and new ideas for the treatment of hepatocellular carcinoma.
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Affiliation(s)
- Shiwen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Yao Mawulikplimi Adzavon
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
- *Correspondence: Yao Mawulikplimi Adzavon,
| | - Xiaohu Wen
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Pengxiang Zhao
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Fei Xie
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Mengyu Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Xuemei Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
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30
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Dai Y, Zhu Y, Xu H. circ_0004872 inhibits proliferation, invasion, and glycolysis of oral squamous cell carcinoma by sponged miR-424-5p. J Clin Lab Anal 2022; 36:e24486. [PMID: 35576499 PMCID: PMC9280002 DOI: 10.1002/jcla.24486] [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: 12/20/2021] [Revised: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 11/20/2022] Open
Abstract
Objective Oral squamous cell carcinoma (OSCC) is one of the most common oral malignant tumors. circ_0004872 can inhibit the progression of gastric cancer, but its effect on the growth and metastasis of OSCC is still unclear. Methods qRT‐PCR was used to detect the expression levels of circ_0004872 and miR‐424‐5p in cancer tissues of OSCC patients and adjacent normal tissues, OSCC cell lines, and human normal oral keratinocytes (HOK). CCK‐8, cell colony formation, flow cytometry, and transwell assay were used to detect cell proliferation rate, viability, apoptosis rate, and invasion ability. Use glucose/lactic acid kit to assay cell glycolysis ability. The dual‐luciferase reporter gene experiment and RIP experiment verified the relationship between circ_0004872 and miR‐424‐5p. The protein levels were examined by Western blot. Results The expression of circ_0004872 was significantly downregulated in OSCC tissues and cells, and the overexpression of circ_0004872 inhibited the proliferation, vitality, invasion, and glycolysis of OSCC cells, and promoted apoptosis. The expression of miR‐424‐5p was greatly upregulated in OSCC tissues and OSCC cells. circ_0004872 can adsorb miR‐424‐5p in OSCC cells, and circ_0004872 can reverse the promoting effect of miR‐424‐5p overexpression on the process of OSCC cells. Conclusion circ_0004872 suppresses the proliferation, invasion, and glycolysis of OSCC cells by sponged miR‐424‐5p, and promotes apoptosis, which can be used as a potential target for early diagnosis and targeted therapy of OSCC.
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Affiliation(s)
- Yinhua Dai
- Department of General Emergency, The Affiliated Stomatological Hospital of Nanchang University, Nanchang, Jiangxi Province, China.,The Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi Province, China.,Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, Jiangxi Province, China
| | - Yalin Zhu
- Department of General Emergency, The Affiliated Stomatological Hospital of Nanchang University, Nanchang, Jiangxi Province, China.,The Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi Province, China.,Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, Jiangxi Province, China
| | - Houyi Xu
- Department of General Emergency, The Affiliated Stomatological Hospital of Nanchang University, Nanchang, Jiangxi Province, China.,The Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi Province, China.,Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, Jiangxi Province, China
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31
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Harper KL, Mottram TJ, Anene CA, Foster B, Patterson MR, McDonnell E, Macdonald A, Westhead D, Whitehouse A. Dysregulation of the miR‐30c/DLL4 axis by circHIPK3 is essential for KSHV lytic replication. EMBO Rep 2022; 23:e54117. [PMID: 35239998 PMCID: PMC9066072 DOI: 10.15252/embr.202154117] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 11/09/2022] Open
Affiliation(s)
- Katherine L Harper
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - Timothy J Mottram
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - Chinedu A Anene
- Centre for Cancer Genomics and Computational Biology Barts Cancer Institute Queen Mary University of London London UK
| | - Becky Foster
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - Molly R Patterson
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - Euan McDonnell
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - Andrew Macdonald
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - David Westhead
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
| | - Adrian Whitehouse
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology University of Leeds Leeds UK
- Department of Biochemistry and Microbiology Rhodes University Grahamstown South Africa
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32
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Donda K, Torres BA, Maheshwari A. Non-coding RNAs in Neonatal Necrotizing Enterocolitis. NEWBORN 2022; 1:120-130. [PMID: 35754997 PMCID: PMC9219563 DOI: 10.5005/jp-journals-11002-0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Keyur Donda
- Department of Pediatrics, University of South Florida Health Morsani College of Medicine, Tampa, Florida, United States of America
| | - Benjamin A Torres
- Department of Pediatrics, University of South Florida Health Morsani College of Medicine, Tampa, Florida, United States of America
| | - Akhil Maheshwari
- Global Newborn Society, Clarksville, Maryland, United States of America
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Cao J, Yu U, Li L, Yuan X, Chen S, Xu H, Yi M, Liu S. circKL inhibits the growth and metastasis of kidney cancer by sponging miR‑182‑5p and upregulating FBXW7. Oncol Rep 2022; 47:75. [PMID: 35179220 PMCID: PMC8867257 DOI: 10.3892/or.2022.8286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 01/19/2022] [Indexed: 11/21/2022] Open
Abstract
Circular RNAs (circRNAs) are a type of non-coding RNA with important roles in the regulation of various biological processes involved in malignant progression. However, the potential molecular mechanisms and roles of circRNAs in kidney cancer have remained to be fully elucidated. In a previous study by our group, high-throughput microarray sequencing data were analyzed to determine the differentially expressed circRNAs in kidney cancer. In this analysis, a novel circRNA (hsa_circ_0100312, named circKL) was identified as a frequently downregulated circRNA in kidney cancer cells and tissues by reverse transcription-quantitative PCR. In the present study, Cell Counting Kit-8, colony formation, Transwell, wound-healing and mouse xenograft assays as well as a lung metastasis experiment were performed to confirm the functions of circKL. The experiments confirmed that circKL overexpression significantly inhibited the proliferation, migration, tumor growth and metastasis of kidney cancer both in vitro and in vivo. The potential molecular mechanisms of circKL were investigated by performing dual-luciferase and RNA immunoprecipitation assays. Western blot assays confirmed that overexpression of circKL significantly increased the protein level of F-box and WD repeat domain containing 7 (FBXW7). All results suggested that circKL suppressed the growth and migration of kidney cancer by sponging microRNA (miR)-182-5p and upregulating FBXW7 expression. Overall, the circKL/miR-182-5p/FBXW7 axis was indicated to have a key role in the growth and metastasis of kidney cancer and may be targeted as a novel therapeutic strategy.
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Affiliation(s)
- Juan Cao
- Department of Pathology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Uet Yu
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Li Li
- Department of Pathology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Xiuli Yuan
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Senmin Chen
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Huanli Xu
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Meng Yi
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
| | - Sixi Liu
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518038, P.R. China
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Lu HJ, Li J, Yang G, Yi CJ, Zhang D, Yu F, Ma Z. Circular RNAs in stem cells: from basic research to clinical implications. Biosci Rep 2022; 42:BSR20212510. [PMID: 34908111 PMCID: PMC8738868 DOI: 10.1042/bsr20212510] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNAs) are a special class of endogenous RNAs with a wide variety of pathophysiological functions via diverse mechanisms, including transcription, microRNA (miRNA) sponge, protein sponge/decoy, and translation. Stem cells are pluripotent cells with unique properties of self-renewal and differentiation. Dysregulated circRNAs identified in various stem cell types can affect stem cell self-renewal and differentiation potential by manipulating stemness. However, the emerging roles of circRNAs in stem cells remain largely unknown. This review summarizes the major functions and mechanisms of action of circRNAs in stem cell biology and disease progression. We also highlight circRNA-mediated common pathways in diverse stem cell types and discuss their diagnostic significance with respect to stem cell-based therapy.
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Affiliation(s)
- Hui-Juan Lu
- The First Affiliated Hospital of Yangtze University, Health Science Center, Yangtze University, Jingzhou, Hubei 434023, China
- School of Basic Medicine, Health Science Center, Yangtze University, 1 Nanhuan Road, Jingzhou, Hubei 434023, China
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434023, China
| | - Juan Li
- Key Laboratory of Environmental Health, Ministry of Education, Department of Toxicology, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Guodong Yang
- Department of Oncology, Huanggang Central Hospital of Yangtze University, Huanggang, Hubei 438000, China
| | - Cun-Jian Yi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434023, China
| | - Daping Zhang
- The First Affiliated Hospital of Yangtze University, Health Science Center, Yangtze University, Jingzhou, Hubei 434023, China
- School of Basic Medicine, Health Science Center, Yangtze University, 1 Nanhuan Road, Jingzhou, Hubei 434023, China
| | - Fenggang Yu
- Institute of Life Science, Yinfeng Biological Group, Jinan 250000, China
| | - Zhaowu Ma
- The First Affiliated Hospital of Yangtze University, Health Science Center, Yangtze University, Jingzhou, Hubei 434023, China
- School of Basic Medicine, Health Science Center, Yangtze University, 1 Nanhuan Road, Jingzhou, Hubei 434023, China
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Tamtaji OR, Derakhshan M, Rashidi Noshabad FZ, Razaviyan J, Hadavi R, Jafarpour H, Jafari A, Rajabi A, Hamblin MR, Mahabady MK, Taghizadieh M, Mirzaei H. Non-Coding RNAs and Brain Tumors: Insights Into Their Roles in Apoptosis. Front Cell Dev Biol 2022; 9:792185. [PMID: 35111757 PMCID: PMC8801811 DOI: 10.3389/fcell.2021.792185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 12/08/2021] [Indexed: 12/18/2022] Open
Abstract
A major terrifying ailment afflicting the humans throughout the world is brain tumor, which causes a lot of mortality among pediatric and adult solid tumors. Several major barriers to the treatment and diagnosis of the brain tumors are the specific micro-environmental and cell-intrinsic features of neural tissues. Absence of the nutrients and hypoxia trigger the cells’ mortality in the core of the tumors of humans’ brains: however, type of the cells’ mortality, including apoptosis or necrosis, has been not found obviously. Current studies have emphasized the non-coding RNAs (ncRNAs) since their crucial impacts on carcinogenesis have been discovered. Several investigations suggest the essential contribution of such molecules in the development of brain tumors and the respective roles in apoptosis. Herein, we summarize the apoptosis-related non-coding RNAs in brain tumors.
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Affiliation(s)
- Omid Reza Tamtaji
- Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Derakhshan
- Department of Pathology, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Javad Razaviyan
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Razie Hadavi
- Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamed Jafarpour
- Student Research Committee, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ameneh Jafari
- Advanced Therapy Medicinal Product (ATMP) Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Rajabi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Michael R. Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Johannesburg, South Africa
| | - Mahmood Khaksary Mahabady
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
- *Correspondence: Mahmood Khaksary Mahabady, ; Mohammad Taghizadieh, ; Hamed Mirzaei,
| | - Mohammad Taghizadieh
- Department of Pathology, School of Medicine, Center for Women’s Health Research Zahra, Tabriz University of Medical Sciences, Tabriz, Iran
- *Correspondence: Mahmood Khaksary Mahabady, ; Mohammad Taghizadieh, ; Hamed Mirzaei,
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
- *Correspondence: Mahmood Khaksary Mahabady, ; Mohammad Taghizadieh, ; Hamed Mirzaei,
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Circ_0003159 upregulates LIFR expression through competitively binding to miR-221-3p/miR-222-3p to block gastric cancer development. J Mol Histol 2022; 53:173-186. [PMID: 35034206 DOI: 10.1007/s10735-021-10044-8] [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: 12/07/2020] [Accepted: 11/21/2021] [Indexed: 02/07/2023]
Abstract
Gastric cancer (GC) remains a major cause of cancer-related deaths. Increasing studies suggest that cancer development is accompanied by the deregulation of circular RNAs. We investigated the function of circ_0003159 in GC. The expression levels of circ_0003159, miR-221-3p/miR-222-3p and leukemia inhibitory factor receptor (LIFR) mRNA were measured by real-time quantitative polymerase chain reaction. Cell colony formation ability was assessed by colony formation assay, and cell viability was assessed by cell counting kit-8 assay. Cell apoptosis was assessed by flow cytometry assay and caspase3 activity. Cell migration and invasion were assessed by transwell assay. Glycolysis energy metabolism was assessed by 5'-triphosphate production, glucose uptake and lactate production. The protein levels of related marker proteins and LIFR were detected by western blot. The relationship between circ_0003159 and miR-221-3p/miR-222-3p, or LIFR and miR-221-3p/miR-222-3p was obtained from bioinformatics tools and verified by dual-luciferase reporter assay. A cancer tumorogenicity xenograft experiment in nude mice was conducted to determine the role of circ_0003159 in tumor growth by AGS cells. Our results showed that circ_0003159 expression was decreased in GC tissues and cells. Circ_0003159 overexpression sequestered GC cell viability, migration, invasion and glycolysis and induced cell apoptosis. MiR-221-3p and miR-222-3p were targets of circ_0003159, and the inhibition of miR-221-3p and miR-222-3p also blocked GC cell viability, migration, invasion and glycolysis and promoted cell apoptosis. LIFR was a common target of miR-221-3p and miR-222-3p. Interestingly, LIFR knockdown reversed the effects of circ_0003159 overexpression on GC cell behaviors. Circ_0003159 increased the expression level of LIFR by targeting miR-221-3p and miR-222-3p. The tumorigenicity assay showed that circ_0003159 overexpression inhibited tumor growth in vivo. In conclusion, circ_0003159 inhibited GC development in vitro and in vivo by enriching the level of LIFR via direct binding to miR-221-3p/miR-222-3p.
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Sheng J, Liu L, Dong T, Wu X. Circ_SETD3 regulates gefitinib sensitivity and tumor progression by miR-873-5p-dependent regulation of APPBP2 in non-small cell lung cancer. J Chemother 2021; 34:401-413. [PMID: 34861803 DOI: 10.1080/1120009x.2021.2009991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Previous data have shown the prominent clinical efficacy of gefitinib in non-small cell lung cancer (NSCLC) patients. However, its therapeutic efficacy is limited because of the development of gefitinib resistance. This research is designed to investigate the role of circRNA SET domain containing 3, actin histidine (circ_SETD3) in the sensitivity of NSCLC to gefitinib. The expression of circ_SETD3, microRNA-873-5p (miR-873-5p) and amyloid protein-binding protein 2 (APPBP2) was detected by qRT-PCR. Protein expression was determined by western blot analysis or immunohistochemistry assay. The half-maximal inhibitory concentration of gefitinib was determined by 3-(4,5-Dimethylthazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Cell proliferation was investigated by 5-Ethynyl-29-deoxyuridine (EdU), cell colony formation and MTT assays. Cell apoptosis was analyzed by Annexin V-fluorescein isothiocyanate and propidium iodide double staining assay. Transwell assay was employed to evaluate cell migration and invasion. Additionally, the binding relationship between miR-873-5p and circ_SETD3 or APPBP2 was predicted by starbase online database, and identified by a dual-luciferase reporter assay. Further, circ_SETD3 silencing-mediated effect on tumor sensitivity to gefitinib in vivo was confirmed by xenograft mouse model experiment. Circ_SETD3 and APPBP2 expression were upregulated, while miR-873-5p was downregulated in gefitinib-resistant NSCLC tissues and cells compared with gefitinib-sensitive NSCLC tissues or cells. Reduced expression of circ_SETD3 repressed gefitinib resistance, proliferation, migration and invasion, but induced apoptosis of gefitinib-resistant NSCLC cells. Additionally, circ_SETD3 modulated gefitinib sensitivity and tumor development by binding to miR-873-5p. APPBP2 upregulation attenuated miR-873-5p-mediated gefitinib sensitivity and NSCLC progression. Furthermore, circ_SETD3 absence improved tumor sensitivity to gefitinib in vivo. Circ_SETD3 knockdown improved gefitinib sensitivity and repressed NSCLC cell malignancy via miR-873-5p/APPBP2 axis, which provides a theoretical basis for using circ_SETD3-based therapeutic strategies to improve NSCLC sensitivity to gefitinib.
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Affiliation(s)
- Jun Sheng
- Department of Oncology, Wuhu Hospital of Traditional Chinese Medicine, Wuhu, China
| | - Leyi Liu
- Department of Anesthesiology, Wuhu Hospital of Traditional Chinese Medicine, Wuhu, China
| | - Ting Dong
- Yijishan Hospital, First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Xiang Wu
- Department of Oncology, Wuhu Hospital of Traditional Chinese Medicine, Wuhu, China
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Li Y, Shi R, Zhu G, Chen C, Huang H, Gao M, Xu S, Cao P, Zhang Z, Wu D, Li X, Liu H, Chen J. Construction of a circular RNA-microRNA-messenger RNA regulatory network of hsa_circ_0043256 in lung cancer by integrated analysis. Thorac Cancer 2021; 13:61-75. [PMID: 34806315 PMCID: PMC8720627 DOI: 10.1111/1759-7714.14226] [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: 09/01/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Patients with non-small cell lung cancer (NSCLC) are diagnosed in advanced stages and with a poor 5-year survival rate. There is a critical need to identify novel biomarkers to improve the therapy and overall prognosis of this disease. METHODS Differentially expressed genes (DEGs) were identified from three profiles of GSE101586, GSE101684 and GSE112214 using Venn diagrams. hsa_circ_0043256 were validated using quantitative real-time polymerase chain reaction (RT-qPCR). The circular RNA-microRNA-messenger RNA (circRNA-miRNA-mRNA) regulatory network was constructed with Cytoscape 3.7.0. Hub genes were identified with protein interaction (PPI) and validated with the Gene Expression Profiling Interactive Analysis (GEPIA), Human Protein Atlas (HPA) databases, and immunohistochemistry. Survival analyses were also performed using a Kaplan-Meier (KM) plotter. The effects of hsa_circ_0043256 on cell proliferation and cell cycles were evaluated by EdU staining and flow cytometry, respectively. RESULTS hsa_circ_0043256, hsa_circ_0029426 and hsa_circ_0049271 were obtained. Following RT-qPCR validation, hsa_circ_0043256 was selected for further analysis. In addition, functional experiment results indicated that hsa_circ_0043256 could inhibit cell proliferation and cell-cycle progression of NSCLC cells in vitro. Prediction by three online databases and combining with DEGs identified from The Cancer Genome Atlas (TCGA), a network containing one circRNAs, three miRNAs, and 209 mRNAs was developed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated DEGs might be associated with lung cancer onset and progression. A PPI network based on the 209 genes was established, and five hub genes (BIRC5, SHCBP1, CCNA2, SKA3, and GINS1) were determined. Following verification of five hub genes using GEPIA database, HPA database, and immunohistochemistry. High expression of all five hub genes led to poor overall survival. CONCLUSION Our study constructed a circRNA-miRNA-mRNA network of hsa_circ_0043256. hsa_circ_0043256 may be a potential therapeutic target for lung cancer.
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Affiliation(s)
- Yongwen Li
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, China.,Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Ruifeng Shi
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Guangsheng Zhu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Chen Chen
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Hua Huang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Min Gao
- Department of Thoracic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Huhhot, China
| | - Songlin Xu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Peijun Cao
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Zihe Zhang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Di Wu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Xuanguang Li
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongyu Liu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Quantitative Biomedical Research Center, Department of Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jun Chen
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China.,Department of Thoracic Surgery, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
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Yu B, Li M, Han SP, Yu Z, Zhu J. Circular RNA hsa_circ_105039 promotes cardiomyocyte differentiation by sponging miR‑17 to regulate cyclinD2 expression. Mol Med Rep 2021; 24:861. [PMID: 34664684 PMCID: PMC8548937 DOI: 10.3892/mmr.2021.12501] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/10/2021] [Indexed: 11/06/2022] Open
Abstract
Previously it was found that hsa_circ_105039 was underexpressed in the heart tissue of patients with congenital heart disease (CHD). However, the function and mechanism of hsa_circ_105039 in CHD are unclear. In the present study, induced pluripotent stem (iPS) cells were differentiated into cardiomyocytes using 1% dimethyl sulfoxide (DMSO). Cell differentiation, viability, migration and apoptosis were measured before and following hsa_circ_105039 knockdown or overexpression. The results indicated that hsa_circ_105039 overexpression promoted cell differentiation, viability and migration; whereas apoptosis was simultaneously repressed. A luciferase reporter assay verified that hsa_circ_105039 acted as a sponge for microRNA (miR)‑17 and that cyclinD2 was a direct target of miR‑17. Furthermore, differentiation‑related genes and proteins were analyzed by reverse transcription‑quantitative PCR and western blotting, respectively. The results showed that hsa_circ_105039 could also upregulate the expression of differentiation‑related genes and proteins, including natriuretic peptide A, cardiac troponin I, GATA‑binding protein 4 and homobox transcription factor, in iPS cells. The results suggested that hsa_circ_105039 exerted a protective effect by promoting miR‑17/cyclinD2 in DMSO‑induced iPS cardiomyocytes, which indicated that hsa_circ_105039 is a potential key molecule for the diagnosis of CHD.
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Affiliation(s)
- Boshi Yu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu 210004, P.R. China
| | - Mengmeng Li
- Department of Pediatrics, Women's Hospital of Nanjing Medical University Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu 210004, P.R. China
| | - Shu Ping Han
- Department of Pediatrics, Women's Hospital of Nanjing Medical University Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu 210004, P.R. China
| | - Zhangbin Yu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu 210004, P.R. China
| | - Jingai Zhu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu 210004, P.R. China
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40
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Singh VK, Thakral D, Gupta R. Regulatory noncoding RNAs: potential biomarkers and therapeutic targets in acute myeloid leukemia. AMERICAN JOURNAL OF BLOOD RESEARCH 2021; 11:504-519. [PMID: 34824883 PMCID: PMC8610797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
The noncoding RNAs (ncRNA) comprise a substantial segment of the human transcriptome and have emerged as key elements of cellular homeostasis and disease pathogenesis. Dysregulation of these ncRNAs by alterations in the primary RNA motifs and/or aberrant expression levels is relevant in various diseases, especially cancer. The recent research advances indicate that ncRNAs regulate vital oncogenic processes, including hematopoietic cell differentiation, proliferation, apoptosis, migration, and angiogenesis. The ever-expanding role of ncRNAs in cancer progression and metastasis has sparked interest as potential diagnostic and prognostic biomarkers in acute myeloid leukemia. Moreover, advances in antisense oligonucleotide technologies and pharmacologic discoveries of small molecule inhibitors in targeting RNA structures and RNA-protein complexes have opened newer avenues that may help develop the next generation anti-cancer therapeutics. In this review, we have discussed the role of ncRNA in acute myeloid leukemia and their utility as potential biomarkers and therapeutic targets.
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Affiliation(s)
- Vivek Kumar Singh
- Laboratory Oncology, Dr B.R.A, IRCH, All India Institute of Medical Sciences New Delhi 110029, India
| | - Deepshi Thakral
- Laboratory Oncology, Dr B.R.A, IRCH, All India Institute of Medical Sciences New Delhi 110029, India
| | - Ritu Gupta
- Laboratory Oncology, Dr B.R.A, IRCH, All India Institute of Medical Sciences New Delhi 110029, India
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Gender-Dependent Deregulation of Linear and Circular RNA Variants of HOMER1 in the Entorhinal Cortex of Alzheimer's Disease. Int J Mol Sci 2021; 22:ijms22179205. [PMID: 34502114 PMCID: PMC8430762 DOI: 10.3390/ijms22179205] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/11/2021] [Accepted: 08/23/2021] [Indexed: 12/13/2022] Open
Abstract
The HOMER1 gene is involved in synaptic plasticity, learning and memory. Recent studies show that circular RNA derived from HOMER1 (circHOMER1) expression is altered in some Alzheimer’s disease (AD) brain regions. In addition, HOMER1 messenger (mRNA) levels have been associated with β-Amyloid (Aβ) deposits in brain cortical regions. Our aim was to measure the expression levels of HOMER1 circRNAs and their linear forms in the human AD entorhinal cortex. First, we showed downregulation of HOMER1B/C and HOMER1A mRNA and hsa_circ_0006916 and hsa_circ_0073127 levels in AD female cases compared to controls by RT-qPCR. A positive correlation was observed between HOMER1B/C, HOMER1A mRNA, and hsa_circ_0073128 with HOMER1B/C protein only in females. Global average area of Aβ deposits in entorhinal cortex samples was negatively correlated with HOMER1B/C, HOMER1A mRNA, and hsa_circ_0073127 in both genders. Furthermore, no differences in DNA methylation were found in two regions of HOMER1 promoter between AD cases and controls. To sum up, we demonstrate that linear and circular RNA variants of HOMER1 are downregulated in the entorhinal cortex of female patients with AD. These results add to the notion that HOMER1 and its circular forms could be playing a female-specific role in the pathogenesis of AD.
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Li H, Liu X, Sun N, Wang T, Zhu J, Yang S, Song X, Wang R, Wang X, Zhao Y, Zhang Y. Differentially Expressed Circular Non-coding RNAs in Atherosclerotic Aortic Vessels and Their Potential Functions in Endothelial Injury. Front Cardiovasc Med 2021; 8:657544. [PMID: 34307490 PMCID: PMC8294331 DOI: 10.3389/fcvm.2021.657544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/29/2021] [Indexed: 01/22/2023] Open
Abstract
Background: Circular non-coding RNA (circRNA) has a variety of biological functions. However, the expression profile and potential effects of circRNA on atherosclerosis (AS) and vascular endothelial injury have not been fully elucidated. This study aims to identify the differentially expressed circRNAs in atherosclerotic aortic vessels and predict their potential functions in endothelial injury. Method: ApoE-/- mice were fed with high-fat diet for 12 weeks to induce AS. Atherosclerotic plaques were evaluated by H&E and Masson staining and immunohistochemistry; differentially expressed circRNAs were detected by Arraystar Circular RNA Microarray and verified by RT-PCR; the potential target mircoRNAs of circRNAs were predicted by miRanda, Tarbase, Targetscan and their expression changes were verified by RT-PCR; the potential target genes of mircoRNAs were predicted by Targetscan and verified by Western blot; the signaling pathways that they might annotate or regulate and their potential functions in vascular endothelial injury were predicted by gene enrichment analysis. Results: Fifty two circRNAs were up-regulated more than twice and 47 circRNAs were down-regulated more than 1.5 times in AS aortic vessels. Mmmu_circRNA_36781 and 37699 were up-regulated both in AS aortic vessels and H2O2-treated mouse aortic endothelial cells (MAECs). The expression of miR-30d-3p and miR-140-3p, the target microRNA of circRNA_37699 and circRNA_36781, were downregulated both in AS vessels and H2O2-treated MAECs. On the contrary, MKK6 and TP53RK, the potential target gene of miR-140-3p and miR-30d-3p, were upregulated both in AS aortic roots and H2O2-treated MAECs. Besides, gene enrichment analysis showed that MAPK and PI3K-AKT signaling pathway were the most potential signaling pathways regulated by the differentially expressed circRNAs in atherosclerosis. Conclusions: Mmu_circRNA_36781 (circRNA ABCA1) and 37699 (circRNA KHDRBS1) were significantly up-regulated in AS aortic vessels and H2O2-treated MAECs. They have potential regulatory effects on atherosclerosis and vascular endothelial injury by targeting miR-30d-3p-TP53RK and miR-140-3p-MKK6 axis and their downstream signaling pathways.
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Affiliation(s)
- Houwei Li
- Department of Cardiology at the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xue Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Na Sun
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Tianshuo Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Jia Zhu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Shuang Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xia Song
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Ruishuai Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xinhui Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yixiu Zhao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yan Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
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Zhang Z, Zhou Q, Luo F, Zhou R, Xu J, Xiao J, Dai F, Song L. Circular RNA circ-CHI3L1.2 modulates cisplatin resistance of osteosarcoma cells via the miR-340-5p/LPAATβ axis. Hum Cell 2021; 34:1558-1568. [PMID: 34164774 DOI: 10.1007/s13577-021-00564-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 06/04/2021] [Indexed: 12/26/2022]
Abstract
Resistance to chemotherapy drugs is a major factor affecting the surgical outcome and prognosis of osteosarcoma patients. Circular RNAs (circRNAs) play an important role in tumor resistance to chemotherapy. In the present study, we aimed to investigate the role and mechanism of circRNA circ-chitinase 3-like 1.2 (CHI3L1.2) in resistance to cisplatin chemotherapy in osteosarcoma. We found that circ-CHI3L1.2 levels were higher in cisplatin-resistant cells than in their parent cells. circ-CHI3L1.2 knockdown decreased the half-maximal inhibitory concentration (IC50) of cisplatin and the expression levels of P-glycoprotein (P-gp), multidrug-resistance protein 1 (MRP1), and glutathione-S-transferase Pi1 (GSTP1), and promoted apoptosis of cisplatin-resistant osteosarcoma cells. In addition, circ-CHI3L1.2 knockdown induced mesenchymal to epithelial transition (MET) and suppressed cell migration and invasion. The competitive endogenous RNA (ceRNA) mechanism indicated that circ-CHI3L1.2 targets the micro-RNA (miR)-340-5p-lysophosphatidic acid acyltransferase β (LPAATβ) axis, and inhibition of miR-340-5p alleviates the effect of circ-CHI3L1.2 knockdown. In conclusion, circ-CHI3L1.2 levels were increased in cisplatin-resistant osteosarcoma cells and circ-CHI3L1.2 knockdown sensitized cisplatin-resistant osteosarcoma cells to cisplatin through the miR-340-5p-LPAATβ axis.
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Affiliation(s)
- Zehua Zhang
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China
| | - Qiang Zhou
- Department of Orthopaedics, Third Affiliated Hospital, Medical University of Chongqing, Chongqing, 401120, China
| | - Fei Luo
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China
| | - Rui Zhou
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China
| | - Jianzhong Xu
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China
| | - Jun Xiao
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China
| | - Fei Dai
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China.
| | - Lei Song
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, No. 30 Gaotanyanzheng street, Chongqing, 400038, China.
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44
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French R, Pauklin S. Epigenetic regulation of cancer stem cell formation and maintenance. Int J Cancer 2021; 148:2884-2897. [PMID: 33197277 PMCID: PMC8246550 DOI: 10.1002/ijc.33398] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 12/12/2022]
Abstract
Cancerous tumours contain a rare subset of cells with stem-like properties that are termed cancer stem cells (CSCs). CSCs are defined by their ability to divide both symmetrically and asymmetrically, to initiate new tumour growth and to tolerate the foreign niches required for metastatic dissemination. Accumulating evidence suggests that tumours arise from cells with stem-like properties, the generation of CSCs is therefore likely to be an initiatory event in carcinogenesis. Furthermore, CSCs in established tumours exist in a dynamic and plastic state, with nonstem tumour cells thought to be capable of de-differentiation to CSCs. The regulation of the CSC state both during tumour initiation and within established tumours is a desirable therapeutic target and is mediated by epigenetic factors. In this review, we will explore the epigenetic parallels between induced pluripotency and the generation of CSCs, and discuss how the epigenetic regulation of CSCs opens up novel opportunities for therapeutic intervention.
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Affiliation(s)
- Rhiannon French
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal SciencesUniversity of OxfordOxfordUK
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal SciencesUniversity of OxfordOxfordUK
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45
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Pan J, Liu Z, Yang Z, Liang E, Fang C, Zhang D, Zhou X, Niu Y, Xin Z, Chen Y, Cai Q. Circ_0001686 Promotes Prostate Cancer Progression by Up-Regulating SMAD3/TGFBR2 via miR-411-5p. World J Mens Health 2021; 40:149-161. [PMID: 34169675 PMCID: PMC8761241 DOI: 10.5534/wjmh.200204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/28/2021] [Accepted: 03/02/2021] [Indexed: 11/15/2022] Open
Abstract
Purpose As the mechanism of interaction between circular RNAs (circRNAs) and microRNAs (miRNAs) in regulating the development of prostate cancer (PCa) is not clear, this study focuses on investigating these effects. Materials and Methods Sample tissues were collected from the PCa of patients, and microarray analysis of human circRNAs was conducted. The expression of circ_0001686, hsa_miR-411-5p (miR-411-5p) were also detected by qRT-PCR. Circ_0001686 and miR-411-5p mimics were transfected into the PCa cell lines (CWR22RV1and LNCaP) and MTT, colony formation, Transwell, and scratch wound assays were used to analyze the biological behaviors of PCa cells. Si-circ_0001686 and ASO-miR-411-5p were used as negative controls, and dual-luciferase reporter assays were performed to verify the interactions among circ_0001686, miR-411-5p, and SMAD3/TGFBR2. The levels of SMAD3 and TGFBR2 in different treated PCa cells were measured by western blot, and in vivo experiments in a nude mouse model were carried out to strengthen the in vitro findings of miR-411-5p. Results The expression of circ_0001686 was up-regulated, while the expression of miR-411-5p was down-regulated in PCa cells. Moreover, circ_0001686 promoted cell proliferation, migration, and invasion. Molecular mechanism exploration revealed that circ_0001686 could reduce miR-411-5p, affecting the downstream target genes of SMAD3 and TGFBR2. In vitro and in vivo studies verified that miR-411-5p inhibits PCa progression. Conclusions Circ_0001686 can reduce miR-411-5p to increase the expression of SMAD3/TGFBR2, which consequently promotes the proliferation, invasion, and migration of PCa cells.
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Affiliation(s)
- Jiancheng Pan
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Zihao Liu
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Zhizhao Yang
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Enli Liang
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Cheng Fang
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Dingrong Zhang
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Xiaodong Zhou
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Yuanjie Niu
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Zhongcheng Xin
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Yegang Chen
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China.
| | - Qiliang Cai
- Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China.
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Zhang Y, Wang Y. Circular RNAs in Hepatocellular Carcinoma: Emerging Functions to Clinical Significances. Front Oncol 2021; 11:667428. [PMID: 34055634 PMCID: PMC8160296 DOI: 10.3389/fonc.2021.667428] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common primary cancer of the liver and carries high morbidity and mortality. Diagnosing HCC at an early stage is challenging. Therefore, finding new, highly sensitive and specific diagnostic biomarkers for the diagnosis and prognosis of HCC patients is extremely important. Circular RNAs (circRNAs) are a class of non-coding RNAs with covalently closed loop structures. They are characterized by remarkable stability, long half-life, abundance and evolutionary conservation. Recent studies have shown that many circRNAs are expressed aberrantly in HCC tissues and have important regulatory roles during the development and progression of HCC. Hence, circRNAs are promising biomarkers for the diagnosis and prognosis of HCC. This review: (i) summarizes the biogenesis, categories, and functions of circRNAs; (ii) focuses on current progress of dysregulated expression of circRNAs in HCC with regard to regulation of the tumor hallmarks, “stemness” of cancer cells, and immunotherapy; (iii) highlights circRNAs as potential biomarkers and therapeutic targets for HCC; and (iv) discusses some of the challenges, questions and future perspectives of circRNAs research in HCC.
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Affiliation(s)
- Yucheng Zhang
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yali Wang
- Department of Blood Transfusion, China-Japan Union Hospital of Jilin University, Changchun, China
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47
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Fu Y, Sun H. Biogenesis, cellular effects, and biomarker value of circHIPK3. Cancer Cell Int 2021; 21:256. [PMID: 33975598 PMCID: PMC8111742 DOI: 10.1186/s12935-021-01956-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Competing endogenous RNAs (ceRNAs) can indirectly regulate gene expression by competitively binding to microRNA(miRNA) through miRNA response elements (MREs) to affect miRNA-induced gene regulation, which is of great biological significance. Among them, circular RNA (circRNA) has become a hotspot due to its highest binding capacity. A specific circRNA discussed in this review, circHIPK3, has been studied for its biological characteristics, function, cellular effects and its relationship with tumors and various diseases. Here, we review the recent researches about circHIPK3 in detail and aim to elucidate accurate conclusions from them. These circHIPK3-miRNAs-mRNA pathways will further advance the application of circHIPK3 in diseases development, early diagnosis and gene targeting therapy.
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Affiliation(s)
- Yihan Fu
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai, China
| | - Hong Sun
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.
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48
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Circular RNAs in depression: Biogenesis, function, expression, and therapeutic potential. Biomed Pharmacother 2021; 137:111244. [DOI: 10.1016/j.biopha.2021.111244] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 12/30/2020] [Accepted: 12/31/2020] [Indexed: 01/14/2023] Open
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49
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Danac JMC, Garcia RL. CircPVT1 attenuates negative regulation of NRAS by let-7 and drives cancer cells towards oncogenicity. Sci Rep 2021; 11:9021. [PMID: 33907219 PMCID: PMC8079436 DOI: 10.1038/s41598-021-88539-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/14/2021] [Indexed: 12/30/2022] Open
Abstract
Circular RNAs have emerged as functional regulatory molecules whose aberrant expression has been linked to diverse pathophysiological processes. Here, we report that circPVT1 interferes with let-7 binding to NRAS, confirming this axis as one route by which circPVT1 can instigate an oncogenic program in A549 lung cancer cells and HCT116 colorectal cancer cells. CircPVT1 knockdown significantly reduced NRAS levels and attenuated cancer hallmark phenotypes such as proliferation, migration, resistance to apoptosis, cytoskeletal disorganization, and epithelial-mesenchymal transition. The effects of circPVT1 knockdown were at least partially rescued by blocking binding of let-7 to NRAS 3′UTR with a target protector, suggesting that a circPVT1/let-7/NRAS axis exists and acts in cells to reverse NRAS downregulation and favor oncogenicity. While the phenotypic effects of circPVT1 knockdown may be attributable to the global action of circPVT1, the target protection assays resolved the relative contribution of the circPVT1/let-7/NRAS axis specifically.
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Affiliation(s)
- Joshua Miguel C Danac
- Disease Molecular Biology and Epigenetics Laboratory, National Institute of Molecular Biology and Biotechnology, University of the Philippines Diliman, 1101, Quezon City, Philippines
| | - Reynaldo L Garcia
- Disease Molecular Biology and Epigenetics Laboratory, National Institute of Molecular Biology and Biotechnology, University of the Philippines Diliman, 1101, Quezon City, Philippines.
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50
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Lei X, Yang M, Xiao Z, Zhang H, Tan S. circTLK1 facilitates the proliferation and metastasis of renal cell carcinoma by regulating miR-495-3p/CBL axis. Open Life Sci 2021; 16:362-374. [PMID: 33954256 PMCID: PMC8051169 DOI: 10.1515/biol-2021-0041] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/04/2020] [Accepted: 01/05/2021] [Indexed: 12/15/2022] Open
Abstract
Renal cell carcinoma (RCC) is a common urological malignancy. Circular RNAs (circRNAs) have been confirmed to play an important regulatory role in various cancers. This study aimed to investigate the role and potential mechanism of circTLK1 (hsa_circ_0004442) in RCC. The levels of circTLK1, Cbl proto-oncogene (CBL), and microRNA-495-3p (miR-495-3p) were detected by quantitative reverse transcription polymerase chain reaction or western blot. Cell proliferation, cycle arrest and apoptosis, migration, and invasion were assessed by colony formation, flow cytometry, scratch, and transwell assays. The levels of E-cadherin and Vimentin were measured by western blot. The targeting relationship between miR-495-3p and miR-495-3p or CBL was verified by dual-luciferase reporter assay. Tumor growth in vivo was evaluated by xenograft assay. The results found that circTLK1 and CBL were up-regulated in RCC tissues and cells. Silencing of circTLK1 or CBL inhibited proliferation and metastasis and accelerated apoptosis in RCC cells. In addition, circTLK1 directly bound to miR-495-3p, and CBL was the target of miR-495-3p. circTLK1 sponged miR-495-3p to increase CBL expression. Moreover, knockdown of circTLK1 suppressed tumor growth in vivo. In conclusion, down-regulation of circTLK1 restrained proliferation and metastasis and promoted apoptosis in RCC cells by modulating miR-495-3p/CBL axis.
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Affiliation(s)
- Xiangli Lei
- Department of Nephrology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan, China
| | - Meiling Yang
- Department of Oncology, Affiliated Nanhua Hospital, University of South China, 336 Dongfeng Road, Zhuhui District, Hengyang, 421000, Hunan, China
| | - Zhifang Xiao
- Department of Endocrinology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan, China
| | - Heng Zhang
- Department of Hematology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan, China
| | - Shuai Tan
- Department of Oncology, Affiliated Nanhua Hospital, University of South China, 336 Dongfeng Road, Zhuhui District, Hengyang, 421000, Hunan, China
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