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Hama Faraj GS, Hussen BM, Abdullah SR, Fatih Rasul M, Hajiesmaeili Y, Baniahmad A, Taheri M. Advanced approaches of the use of circRNAs as a replacement for cancer therapy. Noncoding RNA Res 2024; 9:811-830. [PMID: 38590433 PMCID: PMC10999493 DOI: 10.1016/j.ncrna.2024.03.012] [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: 12/14/2023] [Revised: 03/18/2024] [Accepted: 03/29/2024] [Indexed: 04/10/2024] Open
Abstract
Cancer is a broad name for a group of diseases in which abnormal cells grow out of control and are characterized by their complexity and recurrence. Although there has been progress in cancer therapy with the entry of precision medicine and immunotherapy, cancer incidence rates have increased globally. Non-coding RNAs in the form of circular RNAs (circRNAs) play crucial roles in the pathogenesis, clinical diagnosis, and therapy of different diseases, including cancer. According to recent studies, circRNAs appear to serve as accurate indicators and therapeutic targets for cancer treatment. However, circRNAs are promising candidates for cutting-edge cancer therapy because of their distinctive circular structure, stability, and wide range of capabilities; many challenges persist that decrease the applications of circRNA-based cancer therapeutics. Here, we explore the roles of circRNAs as a replacement for cancer therapy, highlight the main challenges facing circRNA-based cancer therapies, and discuss the key strategies to overcome these challenges to improve advanced innovative therapies based on circRNAs with long-term health effects.
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Affiliation(s)
- Goran Sedeeq Hama Faraj
- Department of Medical Laboratory Science, Komar University of Science and Technology, Sulaymaniyah, 46001, Iraq
| | - Bashdar Mahmud Hussen
- Department of Biomedical Sciences, College of Science, Cihan University-Erbil, Erbil, Kurdistan Region, 44001, Iraq
- Department of Clinical Analysis, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, 44001, Iraq
| | - Snur Rasool Abdullah
- Medical Laboratory Science, Lebanese French University, Erbil, Kurdistan Region, 44001, Iraq
| | - Mohammed Fatih Rasul
- Department of Pharmaceutical Basic Science, Faculty of Pharmacy, Tishk International University, Erbil, Kurdistan Region, Iraq
| | | | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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2
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Mafi A, Khoshnazar SM, Shahpar A, Nabavi N, Hedayati N, Alimohammadi M, Hashemi M, Taheriazam A, Farahani N. Mechanistic insights into circRNA-mediated regulation of PI3K signaling pathway in glioma progression. Pathol Res Pract 2024; 260:155442. [PMID: 38991456 DOI: 10.1016/j.prp.2024.155442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/22/2024] [Accepted: 06/28/2024] [Indexed: 07/13/2024]
Abstract
Circular RNAs (CircRNAs) are non-coding RNAs (ncRNAs) characterized by a stable circular structure that regulates gene expression at both transcriptional and post-transcriptional levels. They play diverse roles, including protein interactions, DNA methylation modification, protein-coding potential, pseudogene creation, and miRNA sponging, all of which influence various physiological processes. CircRNAs are often highly expressed in brain tissues, and their levels vary with neural development, suggesting their significance in nervous system diseases such as gliomas. Research has shown that circRNA expression related to the PI3K pathway correlates with various clinical features of gliomas. There is an interact between circRNAs and the PI3K pathway to regulate glioma cell processes such as proliferation, differentiation, apoptosis, inflammation, angiogenesis, and treatment resistance. Additionally, PI3K pathway-associated circRNAs hold potential as biomarkers for cancer diagnosis, prognosis, and treatment. In this study, we reviewed the latest advances in the expression and cellular roles of PI3K-mediated circRNAs and their connections to glioma carcinogenesis and progression. We also highlighted the significance of circRNAs as diagnostic and prognostic biomarkers and therapeutic targets in glioma.
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Affiliation(s)
- Alireza Mafi
- Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seyedeh Mahdieh Khoshnazar
- Gastroenterology and Hepatology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Amirhossein Shahpar
- Gastroenterology and Hepatology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Noushin Nabavi
- Independent Researcher, Victoria, British Columbia, Canada
| | - Neda Hedayati
- School of Medicine, Iran University of Medical Science, Tehran, Iran.
| | - Mina Alimohammadi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Najma Farahani
- Department of Genetics and Molecular Biology, Isfahan University of Medical Sciences, Isfahan, Iran.
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3
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Hedayati N, Mafi A, Farahani A, Hashemi M, Nabavi N, Alimohammadi M, Rahimzadeh P, Taheriazam A, Farahani N. The importance of the circRNA/Wnt axis in gliomas: Biological functions and clinical opportunities. Pathol Res Pract 2024; 261:155510. [PMID: 39116573 DOI: 10.1016/j.prp.2024.155510] [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: 05/25/2024] [Revised: 07/24/2024] [Accepted: 07/29/2024] [Indexed: 08/10/2024]
Abstract
Gliomas are among the most common cancers in the central nervous system, arising through various signaling pathways. One significant pathway is Wnt signaling, a tightly regulated process that plays a crucial role in gliomagenesis and development. The current study aims to explore the relationship between circular RNAs (circRNAs) and the Wnt/β-catenin signaling pathway in gliomas, considering the growing recognition of circRNAs in disease pathogenesis. A comprehensive review of recent research was conducted to investigate the roles of circRNAs in gliomas, focusing on their expression patterns and interactions with the Wnt signaling pathway. The analysis included studies examining circRNAs' function as microRNA sponges and their impact on glioma biology. The findings reveal that circRNAs are differentially expressed in gliomas and significantly influence the occurrence, growth, and metastasis of these tumors. Specifically, circRNAs interact with the Wnt signaling pathway, affecting glioma development and progression. This interaction highlights the importance of circRNAs in glioma pathophysiology. Understanding the regulatory network involving circRNAs and Wnt signaling offers valuable insights into glioma pathophysiology. CircRNAs hold promise as diagnostic and prognostic biomarkers and may serve as targets for novel therapeutic strategies in glioma treatment.
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Affiliation(s)
- Neda Hedayati
- School of Medicine, Iran University of Medical Science, Tehran, Iran
| | - Alireza Mafi
- Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Aryan Farahani
- Student Research Committee, Faculty of Medicine, Shahid Beheshti University of Medical sciences, Tehran, Iran
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Noushin Nabavi
- Independent Researcher, Victoria, British Columbia, Canada
| | - Mina Alimohammadi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Payman Rahimzadeh
- Surgical Research Society (SRS), Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Najma Farahani
- Department of Genetics and Molecular Biology, Isfahan University of Medical Sciences, Isfahan, Iran.
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4
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Sharma NK, Dwivedi P, Bhushan R, Maurya PK, Kumar A, Dakal TC. Engineering circular RNA for molecular and metabolic reprogramming. Funct Integr Genomics 2024; 24:117. [PMID: 38918231 DOI: 10.1007/s10142-024-01394-z] [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: 04/28/2024] [Revised: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024]
Abstract
The role of messenger RNA (mRNA) in biological systems is extremely versatile. However, it's extremely short half-life poses a fundamental restriction on its application. Moreover, the translation efficiency of mRNA is also limited. On the contrary, circular RNAs, also known as circRNAs, are a common and stable form of RNA found in eukaryotic cells. These molecules are synthesized via back-splicing. Both synthetic circRNAs and certain endogenous circRNAs have the potential to encode proteins, hence suggesting the potential of circRNA as a gene expression machinery. Herein, we aim to summarize all engineering aspects that allow exogenous circular RNA (circRNA) to prolong the time that proteins are expressed from full-length RNA signals. This review presents a systematic engineering approach that have been devised to efficiently assemble circRNAs and evaluate several aspects that have an impact on protein production derived from. We have also reviewed how optimization of the key components of circRNAs, including the topology of vector, 5' and 3' untranslated sections, entrance site of the internal ribosome, and engineered aptamers could be efficiently impacting the translation machinery for molecular and metabolic reprogramming. Collectively, molecular and metabolic reprogramming present a novel way of regulating distinctive cellular features, for instance growth traits to neoplastic cells, and offer new possibilities for therapeutic inventions.
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Affiliation(s)
- Narendra Kumar Sharma
- Department of Bioscience and Biotechnology, Banasthali Vidyapith (Deemed University), P.O. Banasthali Vidyapith Distt. Tonk, Rajasthan, 304 022, India.
| | - Pragya Dwivedi
- Department of Bioscience and Biotechnology, Banasthali Vidyapith (Deemed University), P.O. Banasthali Vidyapith Distt. Tonk, Rajasthan, 304 022, India
| | - Ravi Bhushan
- Department of Zoology, M.S. College, Motihari, Bihar, India
| | - Pawan Kumar Maurya
- Department of Biochemistry, Central University of Haryana, Mahendergarh, 123031, Haryana, India
| | - Abhishek Kumar
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, Karnataka, India
- Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Tikam Chand Dakal
- Genome and Computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan, 313001, India.
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5
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Kong S, Xu YH, Zheng M, Ju SQ, Shi HC. Circ_0004592: An auxiliary diagnostic biomarker for gastric cancer. World J Gastrointest Oncol 2024; 16:2745-2756. [DOI: 10.4251/wjgo.v16.i6.2745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/12/2024] [Accepted: 04/12/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND Gastric cancer (GC) has a high mortality rate, and robust diagnostic biomarkers are currently lacking. However, the clinical relevance of circular RNAs (circRNAs) as GC biomarkers remains largely unexplored.
AIM To evaluate the potential of novel circRNA circ_0004592 in the early screening and prognosis of GC.
METHODS High-throughput sequencing of circRNAs was performed to screen for potential target molecules. Circ_0004592 expression was examined in GC tissues, cells, and plasma. Plasma samples were collected from healthy subjects’ patients, as well as from patients with benign lesions, precancerous lesions, and GC, whereafter the diagnostic accuracy of circ_0004592 was evaluated. The correlation between circ_0004592 levels in plasma and clinicopathological data of patients with GC was further analyzed.
RESULTS Circ_0004592 was upregulated in both the tissue and plasma of patients with GC. Further, circ_0004592 expression was higher in patients with precancerous lesions than in healthy controls while being highest in patients with GC. In the same patient, the postoperative plasma level of circ_0004592 was lower than that in the preoperative period. Moreover, circ_0004592 level was significantly correlated with tumor differentiation, tumor depth, and lymph node metastasis. The area under the curve (AUC) of plasma circ_0004592 exhibited high sensitivity and specificity for differentiating patients with GC from healthy donors. Diagnosis based on circ_0004592, carcinoembryonic antigen, and cancer antigen 199 achieved a superior AUC and was highly sensitive.
CONCLUSION Plasma circ_0004592 may represent a potential non-invasive auxiliary diagnostic biomarker for patients with GC.
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Affiliation(s)
- Shan Kong
- Department of Laboratory Medicine, Jiangsu Province Official Hospital, Nanjing 210000, Jiangsu Province, China
| | - Yan-Hua Xu
- Department of Laboratory Medicine, Northern Jiangsu People’s Hospital, Yangzhou 225000, Jiangsu Province, China
| | - Ming Zheng
- Department of Laboratory Medicine, The Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - Shao-Qing Ju
- Department of Laboratory Medicine, The Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - Heng-Chuan Shi
- Department of Laboratory Medicine, Jiangsu Province Official Hospital, Nanjing 210000, Jiangsu Province, China
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6
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Kong S, Xu YH, Zheng M, Ju SQ, Shi HC. Circ_0004592: An auxiliary diagnostic biomarker for gastric cancer. World J Gastrointest Oncol 2024; 16:2757-2768. [PMID: 38994162 PMCID: PMC11236232 DOI: 10.4251/wjgo.v16.i6.2757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/12/2024] [Accepted: 04/12/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND Gastric cancer (GC) has a high mortality rate, and robust diagnostic biomarkers are currently lacking. However, the clinical relevance of circular RNAs (circRNAs) as GC biomarkers remains largely unexplored. AIM To evaluate the potential of novel circRNA circ_0004592 in the early screening and prognosis of GC. METHODS High-throughput sequencing of circRNAs was performed to screen for potential target molecules. Circ_0004592 expression was examined in GC tissues, cells, and plasma. Plasma samples were collected from healthy subjects' patients, as well as from patients with benign lesions, precancerous lesions, and GC, whereafter the diagnostic accuracy of circ_0004592 was evaluated. The correlation between circ_0004592 levels in plasma and clinicopathological data of patients with GC was further analyzed. RESULTS Circ_0004592 was upregulated in both the tissue and plasma of patients with GC. Further, circ_0004592 expression was higher in patients with precancerous lesions than in healthy controls while being highest in patients with GC. In the same patient, the postoperative plasma level of circ_0004592 was lower than that in the preoperative period. Moreover, circ_0004592 level was significantly correlated with tumor differentiation, tumor depth, and lymph node metastasis. The area under the curve (AUC) of plasma circ_0004592 exhibited high sensitivity and specificity for differentiating patients with GC from healthy donors. Diagnosis based on circ_0004592, carcinoembryonic antigen, and cancer antigen 199 achieved a superior AUC and was highly sensitive. CONCLUSION Plasma circ_0004592 may represent a potential non-invasive auxiliary diagnostic biomarker for patients with GC.
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Affiliation(s)
- Shan Kong
- Department of Laboratory Medicine, Jiangsu Province Official Hospital, Nanjing 210000, Jiangsu Province, China
| | - Yan-Hua Xu
- Department of Laboratory Medicine, Northern Jiangsu People’s Hospital, Yangzhou 225000, Jiangsu Province, China
| | - Ming Zheng
- Department of Laboratory Medicine, The Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - Shao-Qing Ju
- Department of Laboratory Medicine, The Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - Heng-Chuan Shi
- Department of Laboratory Medicine, Jiangsu Province Official Hospital, Nanjing 210000, Jiangsu Province, China
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7
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Saleem A, Khan MU, Zahid T, Khurram I, Ghani MU, Ullah I, Munir R, Calina D, Sharifi-Rad J. Biological role and regulation of circular RNA as an emerging biomarker and potential therapeutic target for cancer. Mol Biol Rep 2024; 51:296. [PMID: 38340202 DOI: 10.1007/s11033-024-09211-3] [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: 11/15/2023] [Accepted: 01/04/2024] [Indexed: 02/12/2024]
Abstract
Circular RNAs (circRNAs) are a unique family of endogenous RNAs devoid of 3' poly-A tails and 5' end caps. These single-stranded circRNAs, found in the cytoplasm, are synthesized via back-splicing mechanisms, merging introns, exons, or both, resulting in covalently closed circular loops. They are profusely expressed across the eukaryotic transcriptome and offer heightened stability against exonuclease RNase R compared to linear RNA counterparts. This review endeavors to provide a comprehensive overview of circRNAs' characteristics, biogenesis, and mechanisms of action. Furthermore, aimed to shed light on the potential of circRNAs as significant biomarkers in various cancer types. It has been performed an exhaustive literature review, drawing on recent studies and findings related to circRNA characteristics, synthesis, function, evaluation techniques, and their associations with oncogenesis. CircRNAs are intricately associated with tumor progression and development. Their multifaceted roles encompass gene regulation through the sponging of proteins and microRNAs, controlling transcription and splicing, interacting with RNA binding proteins (RBPs), and facilitating gene translation. Due to these varied roles, circRNAs have become a focal point in tumor pathology investigations, given their promising potential as both biomarkers and therapeutic agents. CircRNAs, due to their unique biogenesis and multifunctionality, hold immense promise in the realm of oncology. Their stability, widespread expression, and intricate involvement in gene regulation underscore their prospective utility as reliable biomarkers and therapeutic targets in cancer. As our understanding of circRNAs deepens, advanced techniques for their detection, evaluation, and manipulation will likely emerge. These advancements might catalyze the translation of circRNA-based diagnostics and therapeutics into clinical practice, potentially revolutionizing cancer care and prognosis.
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Affiliation(s)
- Ayman Saleem
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | - Muhammad Umer Khan
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan.
| | - Tazeen Zahid
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | - Iqra Khurram
- Centre for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Usman Ghani
- Centre for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Inam Ullah
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | - Rakhtasha Munir
- Centre for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
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8
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Chiang TW, Jhong SE, Chen YC, Chen CY, Wu WS, Chuang TJ. FL-circAS: an integrative resource and analysis for full-length sequences and alternative splicing of circular RNAs with nanopore sequencing. Nucleic Acids Res 2024; 52:D115-D123. [PMID: 37823705 PMCID: PMC10767854 DOI: 10.1093/nar/gkad829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/26/2023] [Accepted: 10/02/2023] [Indexed: 10/13/2023] Open
Abstract
Circular RNAs (circRNAs) are RNA molecules with a continuous loop structure characterized by back-splice junctions (BSJs). While analyses of short-read RNA sequencing have identified millions of BSJ events, it is inherently challenging to determine exact full-length sequences and alternatively spliced (AS) isoforms of circRNAs. Recent advances in nanopore long-read sequencing with circRNA enrichment bring an unprecedented opportunity for investigating the issues. Here, we developed FL-circAS (https://cosbi.ee.ncku.edu.tw/FL-circAS/), which collected such long-read sequencing data of 20 cell lines/tissues and thereby identified 884 636 BSJs with 1 853 692 full-length circRNA isoforms in human and 115 173 BSJs with 135 617 full-length circRNA isoforms in mouse. FL-circAS also provides multiple circRNA features. For circRNA expression, FL-circAS calculates expression levels for each circRNA isoform, cell line/tissue specificity at both the BSJ and isoform levels, and AS entropy for each BSJ across samples. For circRNA biogenesis, FL-circAS identifies reverse complementary sequences and RNA binding protein (RBP) binding sites residing in flanking sequences of BSJs. For functional patterns, FL-circAS identifies potential microRNA/RBP binding sites and several types of evidence for circRNA translation on each full-length circRNA isoform. FL-circAS provides user-friendly interfaces for browsing, searching, analyzing, and downloading data, serving as the first resource for discovering full-length circRNAs at the isoform level.
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Affiliation(s)
- Tai-Wei Chiang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Song-En Jhong
- Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Chen Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chia-Ying Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Wei-Sheng Wu
- Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan
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Mohammadpour S, Noukabadi FN, Esfahani AT, Kazemi F, Esmaeili S, Zafarjafarzadeh N, Sarpash S, Nazemalhosseini-Mojarad E. Non-coding RNAs in Precursor Lesions of Colorectal Cancer: Their Role in Cancer Initiation and Formation. Curr Mol Med 2024; 24:565-575. [PMID: 37226783 DOI: 10.2174/1566524023666230523155719] [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: 09/08/2022] [Revised: 04/01/2023] [Accepted: 04/04/2023] [Indexed: 05/26/2023]
Abstract
Colorectal cancer (CRC) is one of the world's most common types of malignancy. The proliferation of precancerous lesions causes this type of cancer. Two distinct pathways for CRC carcinogenesis have been identified: the conventional adenoma-carcinoma pathway and the serrated neoplasia pathway. Recently, evidence has demonstrated the regulatory roles of noncoding RNAs (ncRNAs) in the initiation and progression of precancerous lesions, especially in the adenoma-carcinoma pathway and serrated neoplasia pathway. By expanding the science of molecular genetics and bioinformatics, several studies have identified dysregulated ncRNAs that function as oncogenes or tumor suppressors in cancer initiation and formation by diverse mechanisms via intracellular signaling pathways known to act on tumor cells. However, many of their roles are still unclear. This review summarizes the functions and mechanisms of ncRNAs (such as long non-coding RNAs, microRNAs, long intergenic non-coding RNAs, small interfering RNAs, and circRNAs) in the initiation and formation of precancerous lesions.
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Affiliation(s)
- Somayeh Mohammadpour
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences. Tehran, Iran
| | - Fatemeh Naderi Noukabadi
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences. Tehran, Iran
| | - Amir Torshizi Esfahani
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences. Tehran, Iran
| | - Fatemeh Kazemi
- Department of Cellular and Molecular Biology, Faculty of Advanced Science and Technology, Medical Sciences, Islamic Azad University Tehran, Tehran, Iran
| | - Sahar Esmaeili
- Department of Cellular and Molecular Biology, Faculty of Advanced Science and Technology, Medical Sciences, Islamic Azad University Tehran, Tehran, Iran
| | - Nikta Zafarjafarzadeh
- Department of Cellular and Molecular Biology, Faculty of Advanced Science and Technology, Medical Sciences, Islamic Azad University Tehran, Tehran, Iran
| | - SeyedKasra Sarpash
- Department of Cellular and Molecular Biology, Faculty of Advanced Science and Technology, Medical Sciences, Islamic Azad University Tehran, Tehran, Iran
| | - Ehsan Nazemalhosseini-Mojarad
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Kim JY, Lee Y, Dho SH, Park HJ, Kim DM, Lim JC, Kim SM, Kim LK. Integrative analysis of circular RNA regulatory network in papillary thyroid carcinoma. Am J Cancer Res 2023; 13:4446-4465. [PMID: 37818060 PMCID: PMC10560948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/21/2023] [Indexed: 10/12/2023] Open
Abstract
Papillary thyroid cancer (PTC) is the most common type of endocrine cancer worldwide. Generally, PTC has an excellent prognosis; however, lymph node metastases and recurrences occur frequently. Over the last decade, circular RNAs (circRNAs), a large class of noncoding RNAs (ncRNAs), have emerged as key regulators of various tumor progression pathways. Here, we aimed to identify novel circRNAs as PTC biomarkers. Differentially expressed circRNAs and mRNAs were analyzed using public datasets from the Gene Expression Omnibus and Cancer Genome Atlas. In addition, we screened for target miRNAs using online prediction databases. Based on these results, we established a circRNA-miRNA-mRNA regulatory network associated with PTC, in which protein-protein interaction networks led to the identification of hub genes. Functional enrichment and survival analyses were performed to gain insights into the biological mechanisms of circRNA involvement. As a result, we found that two circRNAs (hsa_circ_0041829 and has_circ_0092299), four miRNAs (miR-369, miR-486, miR-574, and miR-665), and nine hub genes (BBC3, E2F1, FYN, MAG, SDC1, SDC3, SNAP25, TK1, and TYMS) play significant roles in PTC progression. This study provides a novel framework for understanding the roles of circRNA-miRNA-mediated gene regulation in PTC. It also introduces potential therapeutic targets and prognostic biomarkers, which may serve as a basis for developing targeted therapeutic interventions for PTC.
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Affiliation(s)
- Ji Young Kim
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Gangnam Severance Hospital, Yonsei University College of MedicineSeoul, Republic of Korea
| | - Yeongun Lee
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Gangnam Severance Hospital, Yonsei University College of MedicineSeoul, Republic of Korea
| | - So Hee Dho
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Gangnam Severance Hospital, Yonsei University College of MedicineSeoul, Republic of Korea
| | - Hyo Jin Park
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Gangnam Severance Hospital, Yonsei University College of MedicineSeoul, Republic of Korea
| | - Da-Mi Kim
- Radioisotope Research Division, Korea Atomic Energy Research InstituteDaejeon, Republic of Korea
| | - Jae Cheong Lim
- Radioisotope Research Division, Korea Atomic Energy Research InstituteDaejeon, Republic of Korea
| | - Seok-Mo Kim
- Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Institute of Refractory Thyroid Cancer, Yonsei University College of MedicineSeoul, Republic of Korea
| | - Lark Kyun Kim
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Gangnam Severance Hospital, Yonsei University College of MedicineSeoul, Republic of Korea
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Galang JN, Shen Y, Koitzsch U, Yu X, Eischeid-Scholz H, Bachurski D, Rau TT, Neppl C, Herling M, Bulimaga B, Vasyutina E, Schweiger MR, Büttner R, Odenthal M, Anokhina MM. Vesicular Release and Uptake of Circular LSD1-RNAs from Non-Cancer and Cancer Lung Cells. Int J Mol Sci 2023; 24:13981. [PMID: 37762282 PMCID: PMC10530930 DOI: 10.3390/ijms241813981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Lysine-specific demethylase 1 (LSD1) is highly expressed in many cancer types and strongly associated with cancer progression and metastasis. Circular RNAs (circRNAs) are produced by back-splicing and influence the interactive RNA network by microRNA and protein sponging. In the present study, we aimedto identify circRNAs that derive from the LSD1-encoding KDM1A gene, and to investigate their potential to be released and uptaken by lung cancer versus non-cancer epithelial cells. We identified four circLSD1-RNAs by RT-PCR with divergent primers, followed by sequencing. The expression level of circLSD1-RNAs was then studied by quantitative PCR on cellular and extracellular fractions of lung cancer (PC9) and non-cancer primary small airway epithelial (PSAE) cells. Moreover, we established the transgenic overexpression of circLSD1-RNAs. We show that circLSD1-RNAs are primarily located in the cytoplasm, but are packaged and released from lung cancer and non-cancer cells by extracellular vesicles (EVs) and ribonucleoprotein (RNP) complexes, respectively. Proteomics demonstrated a different protein pattern of EV fractions released from PC9 versus PSAE cells. Importantly, released circLSD1-RNAs were differently taken up by PSAE and PC9 cells. In conclusion, our findings provide primary evidence that circLSD1-RNAs participate in the intercellular communication of lung cancer cells with the tumor environment.
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Affiliation(s)
- Joelle Noriko Galang
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Yefeng Shen
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Ulrike Koitzsch
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Xiaojie Yu
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Hannah Eischeid-Scholz
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Daniel Bachurski
- CECAD Center of Excellence on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50937 Cologne, Germany;
- Department I of Internal Medicine, University Hospital of Cologne, 50937 Cologne, Germany; (M.H.)
| | - Tilman T. Rau
- Institute of Pathology, University Hospital of Duesseldorf, 40225 Duesseldorf, Germany; (T.T.R.); (C.N.)
| | - Christina Neppl
- Institute of Pathology, University Hospital of Duesseldorf, 40225 Duesseldorf, Germany; (T.T.R.); (C.N.)
| | - Marco Herling
- Department I of Internal Medicine, University Hospital of Cologne, 50937 Cologne, Germany; (M.H.)
- Department of Hematology, Cellular Therapy and Hemostaseology, University of Leipzig, 04103 Leipzig, Germany
| | - Bianca Bulimaga
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Elena Vasyutina
- Department I of Internal Medicine, University Hospital of Cologne, 50937 Cologne, Germany; (M.H.)
- Department of Hematology, Cellular Therapy and Hemostaseology, University of Leipzig, 04103 Leipzig, Germany
| | - Michal R. Schweiger
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
- Institute for Epigenetics, University Hospital of Cologne, 50937 Cologne, Germany
| | - Reinhard Büttner
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Margarete Odenthal
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
| | - Maria M. Anokhina
- Institute of Pathology, University Hospital of Cologne, 50937 Cologne, Germany; (J.N.G.); (Y.S.); (X.Y.); (H.E.-S.); (B.B.); (R.B.)
- Center for Molecular Medicine Cologne, University of Cologne, 50937 Cologne, Germany;
- Institute of Pathology, University Hospital of Duesseldorf, 40225 Duesseldorf, Germany; (T.T.R.); (C.N.)
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12
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Ma J, Huang L, Gao YB, Li MX, Chen LL, Yang L. Circ_TNFRSF21 promotes cSCC metastasis and M2 macrophage polarization via miR-214-3p/CHI3L1. J Dermatol Sci 2023; 111:32-42. [PMID: 37442735 DOI: 10.1016/j.jdermsci.2023.06.001] [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: 11/06/2022] [Revised: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 07/15/2023]
Abstract
BACKGROUND Cutaneous squamous cell carcinoma (cSCC) is a highly invasive disease with the potential to metastasize and cause fatality. Therefore, it is crucial to understand the mechanism behind cSCC in order to devise effective strategies to combat this disease. OBJECTIVE We investigated the function of circ_TNFRSF21/miR-214-3p/CHI3L1 axis in cSCC. METHODS The features of circ_TNFRSF21 was characterized using Sanger sequencing, and RNase R/actinomycin D treatment. Genes and M1/M2 markers levels were assessed by qRT-PCR and IHC. The proliferation, migration, and invasion of cells were evaluated by CCK-8, colony formation, EdU incorporation, and transwell assays. Tumor growth and metastasis in vivo were evaluated by nude mouse xenograft model. Interactions of circ_TNFRSF21/miR-214-3p and miR-214-3p/CHI3L1 were validated by RNA immunoprecipitation and dual luciferase assay. RESULTS Circ_TNFRSF21 and CHI3L1 expression were elevated in both human cSCC tissues and cells, whereas miR-214-3p was reduced. Circ_TNFRSF21 silencing or miR-214-3p overexpression suppressed cSCC cell proliferation, migration, invasion, and M2 macrophage polarization. Circ_TNFRSF21 functioned as a sponge for miR-214-3p while miR-214-3p directly targeted CHI3L1. Knockdown of miR-214-3p reversed the effects of circ_TNFRSF21 knockdown on cSCC development, while CHI3L1 upregulation reversed the effects of miR-214-3p overexpression. Furthermore, knockdown of circ_TNFRSF21 inhibited cSCC tumor growth and metastasis in vivo. CONCLUSION Circ_TNFRSF21 plays a significant role in cSCC progression by enhancing cell proliferation, migration, invasion, and M2 macrophage polarization through inhibiting miR-214-3p and subsequent disinhibition of CHI3L1. These findings deepen our understanding of the molecular mechanism of cSCC and propose the circ_TNFRSF21/miR-214-3p/CHI3L1 axis as promising diagnosis markers or therapeutic targets for cSCC.
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Affiliation(s)
- Jun Ma
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangdong Province, PR China
| | - Lei Huang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangdong Province, PR China
| | - Yan-Bin Gao
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangdong Province, PR China
| | - Min-Xiong Li
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangdong Province, PR China
| | - Liang-Long Chen
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangdong Province, PR China
| | - Lei Yang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangdong Province, PR China.
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13
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Guz M, Jeleniewicz W, Cybulski M. Interactions between circRNAs and miR-141 in Cancer: From Pathogenesis to Diagnosis and Therapy. Int J Mol Sci 2023; 24:11861. [PMID: 37511619 PMCID: PMC10380543 DOI: 10.3390/ijms241411861] [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: 07/04/2023] [Revised: 07/20/2023] [Accepted: 07/22/2023] [Indexed: 07/30/2023] Open
Abstract
The function of non-coding RNAs (ncRNAs) in the pathogenesis and development of cancer is indisputable. Molecular mechanisms underlying carcinogenesis involve the aberrant expression of ncRNAs, including circular RNAs (circRNAs), and microRNAs (miRNAs). CircRNAs are a class of single-stranded, covalently closed RNAs responsible for maintaining cellular homeostasis through their diverse functions. As a part of the competing endogenous RNA (ceRNAs) network, they play a central role in the regulation of accessibility of miRNAs to their mRNA targets. The interplay between these molecular players is based on the primary role of circRNAs that act as miRNAs sponges, and the circRNA/miRNA imbalance plays a central role in different pathologies including cancer. Herein, we present the latest state of knowledge about interactions between circRNAs and miR-141, a well-known member of the miR-200 family, in malignant transformation, with emphasis on the biological role of circRNA/miR-141/mRNA networks as a future target for novel anti-cancer therapies.
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Affiliation(s)
- Małgorzata Guz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, 20-093 Lublin, Poland
| | - Witold Jeleniewicz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, 20-093 Lublin, Poland
| | - Marek Cybulski
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, 20-093 Lublin, Poland
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14
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Zhang Y, Luo J, Yang W, Ye WC. CircRNAs in colorectal cancer: potential biomarkers and therapeutic targets. Cell Death Dis 2023; 14:353. [PMID: 37296107 PMCID: PMC10250185 DOI: 10.1038/s41419-023-05881-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 05/09/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
Globally, colorectal cancer (CRC) is the third most prevalent cancer and the second leading cause of cancer-related deaths. Circular RNAs (circRNAs) are single-stranded RNA with covalently closed-loop structures and are highly stable, conserved, and abundantly expressed in various organs and tissues. Recent research found abnormal circRNA expression in CRC patients' blood/serum, cells, CRC tissues, and exosomes. Furthermore, mounting data demonstrated that circRNAs are crucial to the development of CRC. CircRNAs have been shown to exert biological functions by acting as microRNA sponges, RNA-binding protein sponges, regulators of gene splicing and transcription, and protein/peptide translators. These characteristics make circRNAs potential markers for CRC diagnosis and prognosis, potential therapeutic targets, and circRNA-based therapies. However, further studies are still necessary to improve the understanding of the roles and biological mechanisms of circRNAs in the development of CRC. In this review, up-to-date research on the role of circRNAs in CRC was examined, focusing on their potential application in CRC diagnosis and targeted therapy, which would advance the knowledge of the functions of circRNAs in the development and progression of CRC.
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Affiliation(s)
- Yuying Zhang
- Central Laboratory, Shenzhen Longhua Maternity and Child Healthcare Hospital, Shenzhen, 518109, China
| | - Jingyan Luo
- Forevergen Biosciences Centre, Guangzhou International Biotech Island, Guangzhou, 510300, China
| | - Weikang Yang
- Department of Prevention and Healthcare, Shenzhen Longhua Maternity and Child Healthcare Hospital, Shenzhen, 518109, China
| | - Wen-Chu Ye
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.
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15
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Si L, Zhang L, Xing S, Fang P, Tian X, Liu X, Xv X. Curcumin as a therapeutic agent in cancer therapy: Focusing on its modulatory effects on circular RNAs. Phytother Res 2023. [PMID: 37200228 DOI: 10.1002/ptr.7863] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/17/2023] [Accepted: 04/17/2023] [Indexed: 05/20/2023]
Abstract
Curcumin, a natural polyphenol compound, has been identified as an effective therapeutic agent against cancer that exerts its anti-tumor activities by up/downregulating signaling mediators and modulating various cellular processes, including angiogenesis, autophagy, apoptosis, metastasis, and epithelial-mesenchymal transition (EMT). Since almost 98% of genomic transcriptional production is noncoding RNAs in humans, there is evidence that curcumin exerts therapeutic effects through the alterations of noncoding RNAs in various types of cancers. Circular RNAs (circRNAs) are formed by the back-splicing of immature mRNAs and have several functions, including functioning as miRNA sponges. It has been shown that curcumin modulated various circRNAs, including circ-HN1, circ-PRKCA, circPLEKHM3, circZNF83, circFNDC3B, circ_KIAA1199, circRUNX1, circ_0078710, and circ_0056618. The modulation of these circRNAs targeted the expression of mRNAs and modified various signaling pathways and hallmarks of cancer. In this article, we reviewed the pharmacokinetics of curcumin, its anti-cancer activities, as well as the biology and structure of circRNAs. Our main focus was on how curcumin exerts anti-cancer functions by modulating circRNAs and their target mRNAs and pathways.
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Affiliation(s)
- Lihui Si
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Lina Zhang
- Research and Development Department, Jilin Zhongke Bio-engineering Joint Stock Co., Ltd, Changchun, People's Republic of China
| | - Shaoliang Xing
- Research and Development Department, Jilin Zhongke Bio-engineering Joint Stock Co., Ltd, Changchun, People's Republic of China
| | - Panke Fang
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Xiu Tian
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Xiaoyan Liu
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Xiaohong Xv
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, People's Republic of China
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16
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Jagtap U, Anderson ES, Slack FJ. The Emerging Value of Circular Noncoding RNA Research in Cancer Diagnosis and Treatment. Cancer Res 2023; 83:809-813. [PMID: 36919419 PMCID: PMC10020866 DOI: 10.1158/0008-5472.can-22-3014] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/29/2022] [Accepted: 01/03/2023] [Indexed: 03/16/2023]
Abstract
Circular RNAs (circRNA) are a recently described class of RNA molecules that have attracted substantial attention as new components of disease mechanisms and as potential biomarkers in multiple diseases, including cancer. CircRNAs are often highly conserved and exhibit developmental stage- and disease-specific expression. Several studies have reported circRNA expression patterns that are associated with specific cancer types and with patient prognosis. Here, we overview the active registered clinical trials that investigate the value of circRNAs as cancer biomarkers and discuss the potential of circRNAs in clinical cancer care. Taken together, circRNAs are actively being investigated as diagnostic, predictive, and prognostic biomarkers, and their potential to serve as therapeutic intervention points motivates ongoing translational and clinical research.
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Affiliation(s)
- Urmila Jagtap
- Department of Pathology, Center of Life Sciences, Beth Israel Deaconess Medical Center, Boston, Massachusetts, 02115, USA
- HMS Initiative for RNA Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, 02115, USA
| | - Erik S. Anderson
- HMS Initiative for RNA Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, 02115, USA
- Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, 02115, USA
| | - Frank J. Slack
- Department of Pathology, Center of Life Sciences, Beth Israel Deaconess Medical Center, Boston, Massachusetts, 02115, USA
- HMS Initiative for RNA Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, 02115, USA
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17
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Geng Q, Zhao H, Zhou Z, Chen X, Zhao H, Chen N, Li Y, Guo C, Yang A, Beer DG, Chen G. CircSMARCA5 silencing impairs cell proliferation and invasion via the miR-17-3p-EGFR signaling in lung adenocarcinoma. Life Sci 2023; 320:121560. [PMID: 36893940 DOI: 10.1016/j.lfs.2023.121560] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 02/15/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
AIMS Circular RNAs are widely expressed in various cancers and play important roles in tumorigenesis and tumor progression. The function and mechanism of circSMARCA5 in lung adenocarcinoma however remains unclear. MAIN METHODS QRT-PCR analysis was applied for determining circSMARCA5 expression in lung adenocarcinoma patient tumor tissues and cells. Molecular biological assays were used for investigating the role of circSMARCA5 in lung adenocarcinoma progression. Luciferase reporter and bioinformatics assays were used for identifying the underlying mechanism. KEY FINDINGS In this study, we observed that circSMARCA5 expression was decreased in lung adenocarcinoma tissues but silencing of circSMARCA5 in lung adenocarcinoma cells inhibited cell proliferation, colony formation, migration and invasion. Mechanistically, we found EGFR, c-MYC and p21 were down-regulated upon circSMARCA5 knockdown. MiR-17-3p efficiently down- regulated EGFR expression via directly binding to EGFR mRNA. SIGNIFICANCE These studies suggest that circSMARCA5 functions as an oncogene via targeting miR-17-3p-EGFR axis and may represent a promising therapeutic target for lung adenocarcinoma.
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Affiliation(s)
- Qianqian Geng
- Department of Nuclear Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China; Department of Surgery, University of Michigan, Ann Arbor, USA
| | - Huijie Zhao
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Zhiqing Zhou
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Xiuyuan Chen
- Department of Thoracic Surgery, Peking University People's Hospital, Beijing, China
| | - Honglin Zhao
- Department of Thoracic Surgery, Tianjin Medical University, Tianjin, China
| | - Nanzheng Chen
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yu Li
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Chunfang Guo
- Department of Surgery, University of Michigan, Ann Arbor, USA
| | - Aimin Yang
- Department of Nuclear Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - David G Beer
- Department of Surgery, University of Michigan, Ann Arbor, USA
| | - Guoan Chen
- School of Medicine, Southern University of Science and Technology, Shenzhen, China.
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18
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Liu W, Long Q, Zhang W, Zeng D, Hu B, Liu S, Li C. Circular RNA expression profile identifies circMGEA5 as a novel metastasis-promoting factor and potential biomarker in osteosarcoma. J Biochem Mol Toxicol 2023; 37:e23286. [PMID: 36564929 DOI: 10.1002/jbt.23286] [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: 04/29/2022] [Revised: 10/24/2022] [Accepted: 12/09/2022] [Indexed: 12/25/2022]
Abstract
Osteosarcoma (OS) is associated with a high incidence of lung metastasis, which leads to a high risk of cancer death. Circular RNA (circRNA), a novel class of noncoding RNA, is emerging as a key player in human cancer. Herein, we explored the role of circMGEA5 in OS metastasis by conducting circRNA expression microarray. CircMGEA5 was significantly upregulated in metastatic OS tissues compared to primary tissues. High circMGEA5 was positively related with shorter overall and disease-free survival time. Knockdown of circMGEA5 suppressed OS cell migration, invasion, and epithelial-mesenchymal transition (EMT). Mechanistically, circMGEA5 acted as a competing endogenous RNA (ceRNA) to directly sponge miR-153-3p and miR-8084, resulting in increasing ZEB1 and Snail expression, respectively, thereby inducing EMT and metastasis. In turn, ZEB1 and Snail were capable to bind to circMGEA5 promoter, activating circMGEA5 transcription, thus forming a positive feedback loop. Furthermore, we established the tail vein injection model and found that circMGEA5 depletion remarkably reduced lung metastasis nodules generated by OS cells. In sum, our findings, for the first time, reveal the metastasis-promoting role of circMGEA5 in OS. Targeting of this newly identified ceRNA axis may be crucial in the development of novel therapies for metastatic OS patients.
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Affiliation(s)
- Wei Liu
- Department of Orthopedic Trauma, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan Province, China
| | - Qiuping Long
- Department of Orthopedic Trauma, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan Province, China
| | - Wei Zhang
- Department of Orthopedic Trauma, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan Province, China
| | - Dehui Zeng
- Department of Orthopedic Trauma, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan Province, China
| | - Bingbing Hu
- Department of Orthopedic Trauma, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan Province, China
| | - Shengyao Liu
- Department of Orthopedics, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chen Li
- Department of Orthopedic Trauma, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan Province, China
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Chuang TJ, Chiang TW, Chen CY. Assessing the impacts of various factors on circular RNA reliability. Life Sci Alliance 2023; 6:6/5/e202201793. [PMID: 36849251 PMCID: PMC9971162 DOI: 10.26508/lsa.202201793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/15/2023] [Accepted: 02/15/2023] [Indexed: 03/01/2023] Open
Abstract
Circular RNAs (circRNAs) are non-polyadenylated RNAs with a continuous loop structure characterized by a non-colinear back-splice junction (BSJ). Although millions of circRNA candidates have been identified, it remains a major challenge for determining circRNA reliability because of various types of false positives. Here, we systematically assess the impacts of numerous factors related to circRNA identification, conservation, biogenesis, and function on circRNA reliability by comparisons of circRNA expression from mock and the corresponding colinear/polyadenylated RNA-depleted datasets based on three different RNA treatment approaches. Eight important indicators of circRNA reliability are determined. The relative contribution to variability explained analyses reveal that the relative importance of these factors in affecting circRNA reliability in descending order is the conservation level of circRNA, full-length circular sequences, supporting BSJ read count, both BSJ donor and acceptor splice sites at the same colinear transcript isoforms, both BSJ donor and acceptor splice sites at the annotated exon boundaries, BSJs detected by multiple tools, supporting functional features, and both BSJ donor and acceptor splice sites undergoing alternative splicing. This study thus provides a useful guideline and an important resource for selecting high-confidence circRNAs for further investigations.
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Affiliation(s)
| | - Tai-Wei Chiang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chia-Ying Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
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20
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Sun Z, Wu Y, Gao F, Li H, Wang C, Du L, Dong L, Jiang Y. In situ detection of exosomal RNAs for cancer diagnosis. Acta Biomater 2023; 155:80-98. [PMID: 36343908 DOI: 10.1016/j.actbio.2022.10.061] [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: 09/02/2022] [Revised: 10/14/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
Abstract
Exosomes are considered as biomarkers reflecting the physiological state of the human body. Studies have revealed that the expression levels of specific exosomal RNAs are closely associated with certain cancers. Thus, detection of exosomal RNA offers a new avenue for liquid biopsy of cancers. Many exosomal RNA detection methods based on various principles have been developed, and most of the methods detect the extracted RNAs after lysing exosomes. Besides complex and time-consuming extraction steps, a major drawback of this approach is the degradation of the extracted RNAs in the absence of plasma membrane and cytosol. In addition, there is considerable loss of RNAs during their extraction. In situ detection of exosomal RNAs can avoid these drawbacks, thus allowing higher diagnostic reliability. In this paper, in situ detection of exosomal RNAs was systematically reviewed from the perspectives of detection methods, transport methods of the probe systems, probe structures, signal amplification strategies, and involved functional materials. Furthermore, the limitations and possible improvements of the current in situ detection methods for exosomal RNAs towards the clinical diagnostic application are discussed. This review aims to provide a valuable reference for the development of in situ exosomal RNA detection strategies for non-invasive diagnosis of cancers. STATEMENT OF SIGNIFICANCE: Certain RNAs have been identified as valuable biomarkers for some cancers, and sensitive detection of cancer-related RNAs is expected to achieve better diagnostic efficacy. Currently, the detection of exosomal RNAs is receiving increasing attention due to their high stability and significant concentration differences between patients and healthy individuals. In situ detection of exosomal RNAs has greater diagnostic reliability due to the avoidance of RNA degradation and loss. However, this mode is still limited by some factors such as detection methods, transport methods of the probe systems, probe structures, signal amplification strategies, etc. This review focuses on the progress of in situ detection of exosomal RNAs and aims to promote the development of this field.
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Affiliation(s)
- Zhiwei Sun
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
| | - Yanqiu Wu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
| | - Fucheng Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
| | - Hui Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
| | - Chuanxin Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan 250033, China
| | - Lutao Du
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan 250033, China.
| | - Lun Dong
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan 250012, China.
| | - Yanyan Jiang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
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Ruan H, Wang PC, Han L. Characterization of circular RNAs with advanced sequencing technologies in human complex diseases. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1759. [PMID: 36164985 DOI: 10.1002/wrna.1759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 07/09/2022] [Accepted: 08/02/2022] [Indexed: 01/31/2023]
Abstract
Circular RNAs (circRNAs) are one category of non-coding RNAs that do not possess 5' caps and 3' free ends. Instead, they are derived in closed circle forms from pre-mRNAs by a non-canonical splicing mechanism named "back-splicing." CircRNAs were discovered four decades ago, initially called "scrambled exons." Compared to linear RNAs, the expression levels of circRNAs are considerably lower, and it is challenging to identify circRNAs specifically. Thus, the biological relevance of circRNAs has been underappreciated until the advancement of next generation sequencing (NGS) technology. The biological insights of circRNAs, such as their tissue-specific expression patterns, biogenesis factors, and functional effects in complex diseases, namely human cancers, have been extensively explored in the last decade. With the invention of the third generation sequencing (TGS) with longer sequencing reads and newly designed strategies to characterize full-length circRNAs, the panorama of circRNAs in human complex diseases could be further unveiled. In this review, we first introduce the history of circular RNA detection. Next, we describe widely adopted NGS-based methods and the recently established TGS-based approaches capable of characterizing circRNAs in full-length. We then summarize data resources and representative circRNA functional studies related to human complex diseases. In the last section, we reviewed computational tools and discuss the potential advantages of utilizing advanced sequencing approaches to a functional interpretation of full-length circRNAs in complex diseases. This article is categorized under: RNA Evolution and Genomics > Computational Analyses of RNA RNA in Disease and Development > RNA in Disease.
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Affiliation(s)
- Hang Ruan
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Peng-Cheng Wang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Leng Han
- Center for Epigenetics and Disease Prevention, Institute of Biosciences and Technology, Texas A&M University, Houston, Texas, USA.,Department of Translational Medical Sciences, College of Medicine, Texas A&M University, Houston, Texas, USA
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22
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Kang F, Yan Y, Liu Y, Liang Q, Xu Z, Zhu W, Thakur A. Unraveling the significance of exosomal circRNAs in cancer therapeutic resistance. Front Pharmacol 2023; 14:1093175. [PMID: 36874026 PMCID: PMC9974836 DOI: 10.3389/fphar.2023.1093175] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/30/2023] [Indexed: 02/22/2023] Open
Abstract
Exosomes are nanoscale extracellular vesicles secreted by a variety of cells, affecting the physiological and pathological homeostasis. They carry various cargoes including proteins, lipids, DNA, and RNA and have emerged as critical mediators of intercellular communication. During cell-cell communication, they can internalize either by autologous or heterologous recipient cells, which activate different signaling pathways, facilitating malignant progression of cancer. Among different types of cargoes in exosomes, the endogenous non-coding RNAs, such as circular RNAs (or circRNAs), have gained tremendous attention for their high stability and concentration, playing promising functional roles in cancer chemotherapeutic response by regulating the targeted gene expression. In this review, we primarily described the emerging evidence demonstrating the important roles of circular RNAs derived from exosomes in the regulation of cancer-associated signaling pathways that were involved in cancer research and therapeutic interventions. Additionally, the relevant profiles of exosomal circRNAs and their biological implications have been discussed, which is under investigation for their potential effect on the control of cancer therapeutic resistance.
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Affiliation(s)
- Fanhua Kang
- Department of Pathology, Xiangya Changde Hospital, Changde, Hunan, China
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yuanhong Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiuju Liang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Zhu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Abhimanyu Thakur
- Pritzker School of Molecular Engineering, Ben May Department for Cancer Research, University of Chicago, Chicago, IL, United States
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23
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Josipovic N, Ebbesen KK, Zirkel A, Danieli-Mackay A, Dieterich C, Kurian L, Hansen TB, Papantonis A. circRAB3IP modulates cell proliferation by reorganizing gene expression and mRNA processing in a paracrine manner. RNA (NEW YORK, N.Y.) 2022; 28:1481-1495. [PMID: 35973723 PMCID: PMC9745835 DOI: 10.1261/rna.079195.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 08/01/2022] [Indexed: 05/18/2023]
Abstract
Circular RNAs are an endogenous long-lived and abundant noncoding species. Despite their prevalence, only a few circRNAs have been dissected mechanistically to date. Here, we cataloged nascent RNA-enriched circRNAs from primary human cells and functionally assigned a role to circRAB3IP in sustaining cellular homeostasis. We combined "omics" and functional experiments to show how circRAB3IP depletion deregulates hundreds of genes, suppresses cell cycle progression, and induces senescence-associated gene expression changes. Conversely, excess circRAB3IP delivered to endothelial cells via extracellular vesicles suffices for accelerating their division. We attribute these effects to an interplay between circRAB3IP and the general splicing factor SF3B1, which can affect transcript variant expression levels of cell cycle-related genes. Together, our findings link the maintenance of cell homeostasis to the presence of a single circRNA.
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Affiliation(s)
- Natasa Josipovic
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Karoline K Ebbesen
- Department of Molecular Biology and Genetics (MBG), Aarhus University, 8000 Aarhus, Denmark
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, 8000 Aarhus, Denmark
| | - Anne Zirkel
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
| | - Adi Danieli-Mackay
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Christoph Dieterich
- Bioinformatics and Systems Cardiology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Leo Kurian
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
- Institute of Neurophysiology, University of Cologne, 50931 Cologne, Germany
| | - Thomas B Hansen
- Department of Molecular Biology and Genetics (MBG), Aarhus University, 8000 Aarhus, Denmark
| | - Argyris Papantonis
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
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24
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circXRCC5 foster gastric cancer growth and metastasis by the HNRNPC/circXRCC5/miR-655-3p/RREB1/UBA2 positive feedback loop. Cancer Gene Ther 2022; 29:1648-1661. [PMID: 35661832 DOI: 10.1038/s41417-022-00482-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 03/22/2022] [Accepted: 05/13/2022] [Indexed: 02/04/2023]
Abstract
Gastric cancer (GC) is one of the most common malignancies, leading to millions of deaths each year. Here, we investigated the molecular mechanisms of GC, with a focus on circXRCC5/miR-655-3p/RREB1/UBA2 axis. circXRCC5 was identified in 62 paired cancer specimens and adjacent normal tissues by genome-wide bioinformatics analysis and verified by qRT-PCR and Sanger sequencing. Knockdown or exogenous expression of circXRCC5 was performed to validate the functional significance of circXRCC5 using both in vitro and in vivo assays, including CCK-8, colony formation, EdU incorporation, transwell system, as well as animal experiments. RNA immunoprecipitation, biotinylated RNA pull-down, ChIP, and dual-luciferase assays were employed to validate the regulatory network of circXRCC5/miR-655-3p/RREB1/UBA2. Frequently elevated circXRCC5 in GC tissues and cell lines was associated with poor prognosis of GC patients. Functionally, circXRCC5 overexpression facilitated GC cell proliferation, migration, and invasion, as well as promoted tumor growth and metastasis in vivo. Mechanistically, circXRCC5 served as a sponge of miR-655-3p to induce upregulation of RREB1. RREB1 was identified as a transcriptional activator of UBA2, thus contributing to GC tumorigenesis. Moreover, RNA binding protein (RBP) HNRNPC was proved to interact with circXRCC5 to promote circXRCC5 biogenesis. Collectively, circXRCC5 facilitates GC progression through the HNRNPC/circXRCC5/miR-655-3p/RREB1/UBA2 axis, which might bring novel therapeutic strategies for GC treatment.
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25
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A Review and In Silico Analysis of Tissue and Exosomal Circular RNAs: Opportunities and Challenges in Thyroid Cancer. Cancers (Basel) 2022; 14:cancers14194728. [PMID: 36230649 PMCID: PMC9564022 DOI: 10.3390/cancers14194728] [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: 07/16/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Thyroid cancer is the most common endocrine neoplasm. Recently, knowledge of the molecular genetic changes of thyroid cancer has dramatically improved. Understanding the roles of these molecular changes in thyroid cancer tumorigenesis and progression is essential in developing a successful treatment strategy and improving disease outcomes. As a family of non-coding RNAs, circular RNAs (circRNAs) have been involved in several aspects of the physiological and pathological processes of the cells. The roles of circRNAs in cancer development and progress are evident. In the current review, we aimed to explore the clinical potential of circRNAs as potential diagnostic, prognostic, and therapeutic targets in thyroid cancer. Furthermore, screening the genome-wide circRNAs and performing functional enrichment analyses for all associated dysregulated circRNAs in thyroid cancer have been done. Given the unique advantages circRNAs have, such as superior stability, higher abundance, and presence in different body fluids, this family of non-coding RNAs could be promising diagnostic and prognostic biomarkers and potential therapeutic targets for thyroid cancer. Abstract Thyroid cancer (TC) is the most common endocrine tumor. The genetic and epigenetic molecular alterations of TC have become more evident in recent years. However, a deeper understanding of the roles these molecular changes play in TC tumorigenesis and progression is essential in developing a successful treatment strategy and improving patients’ prognoses. Circular RNAs (circRNAs), a family of non-coding RNAs, have been implicated in several aspects of carcinogenesis in multiple cancers, including TC. In the current review, we aimed to explore the clinical potential of circRNAs as putative diagnostic, prognostic, and therapeutic targets in TC. The current analyses, including genome-wide circRNA screening and functional enrichment for all deregulated circRNA expression signatures, show that circRNAs display atypical contributions, such as sponging for microRNAs, regulating transcription and translation processes, and decoying for proteins. Given their exceptional clinical advantages, such as higher stability, wider abundance, and occurrence in several body fluids, circRNAs are promising prognostic and theranostic biomarkers for TC.
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26
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Wang S, Cheng L, Wu H, Li G. Mechanisms and prospects of circular RNAs and their interacting signaling pathways in colorectal cancer. Front Oncol 2022; 12:949656. [PMID: 35992800 PMCID: PMC9382640 DOI: 10.3389/fonc.2022.949656] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 07/08/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer (CRC) is the leading malignant tumor in terms of morbidity and mortality worldwide, and its pathogenesis involves multiple factors, including environment, lifestyle, and genetics. Continuing evidence suggests that circular RNAs (circRNAs), as a novel non-coding RNA, constitute an important genetic variable in the pathogenesis of CRC. These circRNAs with covalently closed-loop structures exist objectively in organisms. They not only have the biological functions of regulating the expression of target genes, changing the activity of proteins, and translating proteins, but also play a key role in the proliferation, invasion, migration, and apoptosis of tumor cells. CRC is one of the most common cancers in which circRNAs are involved in tumorigenesis, metastasis, and drug resistance, and circRNAs have been demonstrated to function through crosstalk with multiple signaling pathways. Therefore, this review summarizes the biological and carcinogenic functions of circRNAs and their related PI3K/AKT, MAPK, Notch, JAK/STAT, Hippo/YAP, WNT/β-catenin, and VEGF signaling pathways in CRC. We further explore the clinical value of circRNAs and important signaling proteins in the diagnosis, prognosis, and treatment of CRC.
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27
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Lei TX, He DJ, Cao J, Lv WG. CircWDR26 regulates endometrial carcinoma progression via miR-212-3p-mediated typing genes MSH2. Eur J Med Res 2022; 27:135. [PMID: 35897048 PMCID: PMC9327368 DOI: 10.1186/s40001-022-00755-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 06/28/2022] [Indexed: 11/10/2022] Open
Abstract
Background Circular RNAs (circRNA) are important in mediating tumor progression, but their roles in endometrial carcinoma (EC) are not fully understood yet. Many circRNAs are dysregulated and may contribute to EC progression. The functions of circWDR26 in EC remain unknown. Methods The expression of circWDR26 in EC and adjacent normal tissues, and cell lines was determined by qPCR. The proliferation, apoptosis, migration, and invasion of EC cells was examined by CCK-8 assay, flow cytometry, wound healing assay and Transwell assay. The interaction between circWDR26, MSH2 and miR-212-3p was determined by luciferase assay. EC cells were inoculated into nude mice and tumor burden was determined by measuring tumor dimensions, size, and weight. The proliferative marker Ki67 in EC tissue was determined by immunohistochemistry. Results The expression of circWDR26 in EC tissues or cell lines was higher than in the normal tissue or endometrial epithelial cells. Downregulation of circWDR26 resulted in attenuated proliferation, increased apoptosis, reduced migration and invasion of EC cells. Mechanistically, circWDR26 targeted and suppressed the expression of miR-212-3p. We further found that MSH2 was the novel target of miR-212-3p and was upregulated by circWDR26 via inhibiting miR-212-3p. In vivo experiment demonstrated that circWDR26 was essential for EC tumor growth. Conclusion circWDR26 promoted EC progression by regulating miR-212-3p/MSH2 axis and provided novel insights into anti-cancer treatment.
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Affiliation(s)
- Tao-Xiang Lei
- Department of Gynecological Oncology Surgery, Chenzhou First People's Hospital (The First Affiliated Hospital of Xiangnan University), No.849 Youth Avenue, Chenzhou, 423000, Hunan Province, China
| | - De-Jian He
- Department of Emergency, Chenzhou First People's Hospital (The First Affiliated Hospital of Xiangnan University), Chenzhou, 423000, Hunan Province, China
| | - Jian Cao
- Medical Imaging Center, Chenzhou Fourth People's Hospital, Chenzhou, 423000, Hunan Province, China
| | - Wang-Gui Lv
- Department of Gynecological Oncology Surgery, Chenzhou First People's Hospital (The First Affiliated Hospital of Xiangnan University), No.849 Youth Avenue, Chenzhou, 423000, Hunan Province, China.
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28
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Ghafouri-Fard S, Khoshbakht T, Hussen BM, Sarfaraz S, Taheri M, Ayatollahi SA. Circ_CDR1as: A circular RNA with roles in the carcinogenesis. Pathol Res Pract 2022; 236:153968. [PMID: 35667198 DOI: 10.1016/j.prp.2022.153968] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/13/2022] [Accepted: 05/28/2022] [Indexed: 12/19/2022]
Abstract
Circular RNAs are a group of ancient but recently appreciated transcripts that affect carcinogenesis. An example of cancer-related circular RNAs is circ_CDR1as. It is mostly regarded as an oncogenic circular RNA, yet in bladder cancer and glioma it has the opposite effect. In gastric and ovarian cancer, both roles have been reported for this circular RNA. Circ_CDR1as has regulatory effects on miR-1270/AFP, miR-1287/Raf1, miR-7-5p/KLF4, miR-641/HOXA9, miR-219a-5p/SOX5, miR-7/HOXB13 and miR-876-5p/MAGE-A molecular axes. miR-7 is the most appreciated interacting miRNA with circ_CDR1as, since its interaction with circ_CDR1as has been validated in liver cancer, lung cancer, colorectal cancer, esophageal carcinoma, gastric cancer, pancreatic cancer, thyroid cancer, oral squamous cell carcinoma, nasopharyngeal carcinoma and osteosarcoma. The present article aims at summarization of the role of circ_CDR1as in neoplasms and its application as a biomarker in human cancers.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Tayybeh Khoshbakht
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Iraq
| | - Sana Sarfaraz
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Institute of Human Genetics, Jena University Hospital, Jena, Germany.
| | - Seyed Abdulmajid Ayatollahi
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Pharmacognosy and Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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29
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Zhang B, Li Q, Song Z, Ren L, Gu Y, Feng C, Wang J, Liu T. hsa_circ_0000285 facilitates thyroid cancer progression by regulating miR-127-5p/CDH2. J Clin Lab Anal 2022; 36:e24421. [PMID: 35447001 PMCID: PMC9279989 DOI: 10.1002/jcla.24421] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 01/08/2023] Open
Abstract
Thyroid cancer (THCA) is a leading endocrine cancer and becomes the fifth most commonly diagnosed malignancy in females. It is confirmed that circular RNAs (circRNAs) perform regulatory potencies in the pathological progress of THCA. Our purpose was to certify the trait of hsa_circ_0000285 (circ_0000285) and investigate its modulatory mechanism in THCA progression. We identified the expression profile of hsa_circ_0000285 in THCA by conducting qRT-PCR assay. Therewith, the potential of hsa_circ_0000285 in THCA development was determined with a set of functional experiments, including CCK-8, wound healing assay, Western blot, and xenograft model. The molecular mechanism underlying hsa_circ_0000285 was investigated with bioinformatic analysis, RIP and dual-luciferase reporter experiments. As opposed to normal samples and cells, hsa_circ_0000285 level was overtly increased in THCA specimens and cells. The downregulation of hsa_circ_0000285 weakened the proliferative and migratory capacity of THCA cells and promoted cell apoptosis. In addition, hsa_circ_0000285 silence suppressed the tumor growth of xenograft model mice in vivo. Notably, we demonstrated that hsa_circ_0000285 might target miR-127-5p/CDH2 axis in THCA. Afterward, our findings manifested that miR-127-5p attenuation blocked the function of hsa_circ_0000285 depletion in THCA cells. In the final step, CDH2 was proven to mediate the repressive potency of miR-127-5p in the malignant behaviors of THCA. Mechanistically, hsa_circ_0000285 induced the development of THCA via functioning as a competing endogenous RNA (ceRNA) of miR-127-5p to enhance CDH2 expression, which provided a new perspective for THCA therapy.
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Affiliation(s)
- Bowei Zhang
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Qiaoling Li
- Department of Medical Cosmetology, Chengdu Second People's Hospital, Chengdu, China
| | - Zhe Song
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Li Ren
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Yi Gu
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Chao Feng
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Jinju Wang
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Tong Liu
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
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30
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Zabady S, Mahran N, Soltan MA, Alaa Eldeen M, Eid RA, Albogami S, Fayad E, Matboli M, Habib EK, Hasanin AH, A. Ali M, Mesbah NM, Abo-Elmatty DM, Abdel-Hamed AR. Cyanidin-3-Glucoside Modulates hsa_circ_0001345/miRNA106b/ATG16L1 Axis Expression as a Potential Protective Mechanism against Hepatocellular Carcinoma. Curr Issues Mol Biol 2022; 44:1677-1687. [PMID: 35723373 PMCID: PMC9164082 DOI: 10.3390/cimb44040115] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/17/2022] [Accepted: 03/23/2022] [Indexed: 11/23/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common form of malignancy in the liver. Autophagy was found to have a significant effect in controlling HCC. Anthocyanins, which are naturally occurring pigments in a variety of fruits and vegetables, have been thoroughly documented to be involved in a variety of bioactive activities and are widely employed for their antioxidant capabilities. Cyanidin-3-glucoside (C3G) extracted from Morus alba L. has promising antioxidant and anti-tumour activities. The current study aims to examine the protective action of C3G against hepatocellular carcinoma through the investigation of the autophagy protein ATG16L1 expression along with its related RNA molecules (hsa_circ_0001345 and miRNA106b) in Wistar rats. In vivo precancerous lesions (PCL) were induced using diethylnitrosamine (DEN) and acetamidofluorene (2-AAF). Rats were treated with C3G (10, 15, and 20 mg/kg; 4 times weekly) for 112 days (16 weeks). Liver function tests, alfa fetoprotein, ATG16L1 expression, hsa_circ_0001345, and miRNA106b differential expression were examined. Liver sections were examined by histological and immunohistochemical approaches. The current study’s findings indicated that C3G administration protects against the negative effects of DEN-2-AAF on liver functions and liver histopathological sections, which nominated C3G as a potential prophylactic agent against HCC.
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Affiliation(s)
- Shaimaa Zabady
- Department of Biochemistry, Faculty of Pharmacy, Sinai University, Ismailia 16020, Egypt;
| | - Nievin Mahran
- Department of Biochemistry, Faculty of Dentistry, Sinai University, Ismailia 16020, Egypt;
| | - Mohamed A. Soltan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Sinai University, Ismailia 16020, Egypt
- Correspondence: (M.A.S.); (M.A.E.); Tel.: +20-1004185481 (M.A.S.); +20-1090036420 (M.A.E.)
| | - Muhammad Alaa Eldeen
- Cell Biology, Histology & Genetics Division, Zoology Department, Faculty of Science, Zagazig University, Alsharquia 44519, Egypt
- Correspondence: (M.A.S.); (M.A.E.); Tel.: +20-1004185481 (M.A.S.); +20-1090036420 (M.A.E.)
| | - Refaat A. Eid
- Department of Pathology, College of Medicine, King Khalid University, Abha 12573, Saudi Arabia;
| | - Sarah Albogami
- Department of Biotechnology, College of Science, Taif University, Taif 21944, Saudi Arabia; (S.A.); (E.F.)
| | - Eman Fayad
- Department of Biotechnology, College of Science, Taif University, Taif 21944, Saudi Arabia; (S.A.); (E.F.)
| | - Marwa Matboli
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt;
| | - Eman K. Habib
- Faculty of Medicine, Galala University, Galala City 43511, Egypt;
- Department of Anatomy, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt
| | - Amany H. Hasanin
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt;
| | - Mahmoud A. Ali
- Department of Molecular Microbiology, Faculty of Medicine, Armed Forces College, Cairo 11566, Egypt;
| | - Noha M. Mesbah
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (N.M.M.); (D.M.A.-E.); (A.R.A.-H.)
| | - Dina M. Abo-Elmatty
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (N.M.M.); (D.M.A.-E.); (A.R.A.-H.)
| | - Asmaa R. Abdel-Hamed
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (N.M.M.); (D.M.A.-E.); (A.R.A.-H.)
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31
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Entezari M, Sadrkhanloo M, Rashidi M, Asnaf SE, Taheriazam A, Hashemi M, Ashrafizadeh M, Zarrabi A, Rabiee N, Hushmandi K, Mirzaei S, Sethi G. Non-coding RNAs and macrophage interaction in tumor progression. Crit Rev Oncol Hematol 2022; 173:103680. [PMID: 35405273 DOI: 10.1016/j.critrevonc.2022.103680] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 03/25/2022] [Accepted: 04/06/2022] [Indexed: 12/12/2022] Open
Abstract
The macrophages are abundantly found in TME and their M2 polarization is in favor of tumor malignancy. On the other hand, non-coding RNAs (ncRNAs) can modulate macrophage polarization in TME to affect cancer progression. The miRNAs can dually induce/suppress M2 polarization of macrophages and by affecting various molecular pathways, they modulate tumor progression and therapy response. The lncRNAs can affect miRNAs via sponging and other molecular pathways to modulate macrophage polarization. A few experiments have also examined role of circRNAs in targeting signaling networks and affecting macrophages. The therapeutic targeting of these ncRNAs can mediate TME remodeling and affect macrophage polarization. Furthermore, exosomal ncRNAs derived from tumor cells or macrophages can modulate polarization and TME remodeling. Suppressing biogenesis and secretion of exosomes can inhibit ncRNA-mediated M2 polarization of macrophages and prevent tumor progression. The ncRNAs, especially exosomal ncRNAs can be considered as non-invasive biomarkers for tumor diagnosis.
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Affiliation(s)
- Maliheh Entezari
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Mohsen Rashidi
- Department Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; The Health of Plant and Livestock Products Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sholeh Etehad Asnaf
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mehrdad Hashemi
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Milad Ashrafizadeh
- Faculty of Engineering and Natural Sciences, Sabanci University, Orta Mahalle, Üniversite Caddesi No. 27, Orhanlı, Tuzla, Istanbul, Turkey
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul 34396, Turkey
| | - Navid Rabiee
- School of Engineering, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology & Zoonoses, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Sepideh Mirzaei
- Department of Biology, Faculty of Science, Islamic Azad University, Science and Research Branch, Tehran, Iran.
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Cancer Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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De Palma FDE, Salvatore F, Pol JG, Kroemer G, Maiuri MC. Circular RNAs as Potential Biomarkers in Breast Cancer. Biomedicines 2022; 10:biomedicines10030725. [PMID: 35327527 PMCID: PMC8945016 DOI: 10.3390/biomedicines10030725] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 02/06/2023] Open
Abstract
Due to the high heterogeneity and initially asymptomatic nature of breast cancer (BC), the management of this disease depends on imaging together with immunohistochemical and molecular evaluations. These tests allow early detection of BC and patient stratification as they guide clinicians in prognostication and treatment decision-making. Circular RNAs (circRNAs) represent a class of newly identified long non-coding RNAs. These molecules have been described as key regulators of breast carcinogenesis and progression. Moreover, circRNAs play a role in drug resistance and are associated with clinicopathological features in BC. Accumulating evidence reveals a clinical interest in deregulated circRNAs as diagnostic, prognostic and predictive biomarkers. Furthermore, due to their covalently closed structure, circRNAs are highly stable and easily detectable in body fluids, making them ideal candidates for use as non-invasive biomarkers. Herein, we provide an overview of the biogenesis and pleiotropic functions of circRNAs, and report on their clinical relevance in BC.
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Affiliation(s)
- Fatima Domenica Elisa De Palma
- Equipe 11 Labellisée Par La Ligue Nationale Contre Le Cancer, Centre de Recherche Des Cordeliers, Inserm U1138, Université de Paris Cité, Sorbonne Université, 75006 Paris, France; (J.G.P.); (G.K.)
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, 94800 Villejuif, France
- Department of Molecular Medicine and Medical Biotechnology, University of Naples “Federico II”, 80131 Naples, Italy;
- CEINGE-Biotecnologie Avanzate, 80145 Naples, Italy
- Correspondence: (F.D.E.D.P.); (M.C.M.); Tel.: +39-3348176281 (F.D.E.D.P.)
| | - Francesco Salvatore
- Department of Molecular Medicine and Medical Biotechnology, University of Naples “Federico II”, 80131 Naples, Italy;
- CEINGE-Biotecnologie Avanzate, 80145 Naples, Italy
- Inter-University Center for multifactorial and multi genetic chronic human diseases, “Federico II”-Naples, Tor Vergata-Roma II, and Chieti-Pescara Universities, 80131 Naples, Italy
| | - Jonathan G. Pol
- Equipe 11 Labellisée Par La Ligue Nationale Contre Le Cancer, Centre de Recherche Des Cordeliers, Inserm U1138, Université de Paris Cité, Sorbonne Université, 75006 Paris, France; (J.G.P.); (G.K.)
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, 94800 Villejuif, France
| | - Guido Kroemer
- Equipe 11 Labellisée Par La Ligue Nationale Contre Le Cancer, Centre de Recherche Des Cordeliers, Inserm U1138, Université de Paris Cité, Sorbonne Université, 75006 Paris, France; (J.G.P.); (G.K.)
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, 94800 Villejuif, France
- Institut Universitaire de France, 75005 Paris, France
- Department of Biology, Institut du Cancer Paris CARPEM, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France
| | - Maria Chiara Maiuri
- Equipe 11 Labellisée Par La Ligue Nationale Contre Le Cancer, Centre de Recherche Des Cordeliers, Inserm U1138, Université de Paris Cité, Sorbonne Université, 75006 Paris, France; (J.G.P.); (G.K.)
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, 94800 Villejuif, France
- Department of Pharmacy, University of Naples “Federico II”, 80131 Naples, Italy
- Correspondence: (F.D.E.D.P.); (M.C.M.); Tel.: +39-3348176281 (F.D.E.D.P.)
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Arora S, Khan S, Zaki A, Tabassum G, Mohsin M, Bhutto HN, Ahmad T, Fatma T, Syed MA. Integration of chemokine signaling with non-coding RNAs in tumor microenvironment and heterogeneity in different cancers. Semin Cancer Biol 2022; 86:720-736. [DOI: 10.1016/j.semcancer.2022.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/15/2022] [Accepted: 03/02/2022] [Indexed: 02/07/2023]
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Zhou W, Chen YX, Ke B, He JK, Zhu N, Zhang AF, Fang XD, Tu WP. circPlekha7 suppresses renal fibrosis via targeting miR-493-3p/KLF4. Epigenomics 2022; 14:199-217. [PMID: 35172608 DOI: 10.2217/epi-2021-0370] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Aims: The authors aim to investigate the function of circPlekha7 in renal fibrosis. Methods: Human renal tissues from chronic kidney disease patients, kidney cell line and primary cultured renal tubular epithelial cells were used. TGF-β1-treated human kidney 2 cells/tubular epithelial cells and a unilateral ureteral obstruction mouse model were employed to study renal fibrosis. Results: circPlekha7 was diminished in renal tissues from chronic kidney disease patients and TGF-β1-treated human kidney 2 cells and tubular epithelial cells, while miR-493-3p was upregulated. Overexpression of circPlekha7 or knockdown of miR-493-3p suppressed TGF-β1 induced enhancements on epithelial to mesenchymal transition and fibrogenesis, as well as attenuated renal fibrosis and injury in mice subjected to unilateral ureteral obstruction. circPlekha7 bound with miR-493-3p, which directly targeted KLF4. Conclusion: circPlekha7 inhibits epithelial to mesenchymal transition of renal tubular epithelial cells and fibrosis via targeting miR-493-3p to de-repress KLF4/mitofusin2 expression.
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Affiliation(s)
- Wa Zhou
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - Yan-Xia Chen
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - Ben Ke
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - Jia-Ke He
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - Na Zhu
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - A-Fei Zhang
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - Xiang-Dong Fang
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
| | - Wei-Ping Tu
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, PR China
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Peter MR, Zhao F, Jeyapala R, Kamdar S, Xu W, Hawkins C, Evans AJ, Fleshner NE, Finelli A, Bapat B. Investigating Urinary Circular RNA Biomarkers for Improved Detection of Renal Cell Carcinoma. Front Oncol 2022; 11:814228. [PMID: 35174071 PMCID: PMC8841801 DOI: 10.3389/fonc.2021.814228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 12/27/2021] [Indexed: 12/22/2022] Open
Abstract
Renal cell carcinomas (RCC) are usually asymptomatic until late stages, posing several challenges for early detection of malignant disease. Non-invasive liquid biopsy biomarkers are emerging as an important diagnostic tool which could aid with routine screening of RCCs. Circular RNAs (circRNAs) are novel non-coding RNAs that play diverse roles in carcinogenesis. They are promising biomarkers due to their stability and ease of detection in small quantities from non-invasive sources such as urine. In this study, we analyzed the expression of various circRNAs that were previously identified in RCC tumors (circEGLN3, circABCB10, circSOD2 and circACAD11) in urinary sediment samples from non-neoplastic controls, patients with benign renal tumors, and clear cell RCC (ccRCC) patients. We observed significantly reduced levels of circEGLN3 and circSOD2 in urine from ccRCC patients compared to healthy controls. We also assessed the linear variant of EGLN3 and found differential expression between patients with benign tumors compared to ccRCC patients. These findings highlight the potential of circRNA markers as non-invasive diagnostic tools to detect malignant RCC.
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Affiliation(s)
- Madonna R. Peter
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Fang Zhao
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Renu Jeyapala
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Shivani Kamdar
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Wei Xu
- Department of Biostatistics, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Cynthia Hawkins
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
- Arthur and Sonia Labatt Brain Tumor Research Centre, Hospital for Sick Children, Toronto, ON, Canada
| | - Andrew J. Evans
- Department of Laboratory Medicine, Mackenzie Health, Richmond Hill, ON, Canada
| | - Neil E. Fleshner
- Division of Urology, Department of Surgery, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Antonio Finelli
- Division of Urology, Department of Surgery, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Bharati Bapat
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
- *Correspondence: Bharati Bapat,
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Liu L, Jia L, Shao J, Liu H, Wu Q, Wu X. Circular RNA circNF1 siRNA Silencing Inhibits Glioblastoma Cell Proliferation by Promoting the Maturation of miR-340. Front Neurol 2021; 12:658076. [PMID: 34589042 PMCID: PMC8475906 DOI: 10.3389/fneur.2021.658076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 08/10/2021] [Indexed: 11/25/2022] Open
Abstract
It has been reported that circNF1, a type of circular RNA (circRNA), promotes gastric cancer. This study aimed to analyze the role of circNF1 in glioblastoma (GBM). The expression of circNF1, mature miR-340, and miR-340 precursor in paired GBM and non-cancer tissues from GBM patients (n = 50) was analyzed by RT-qPCR. GBM cells were transfected with circNF1 siRNA, followed by the analysis of the expression of mature miR-340 and miR-340 precursor, to study the effects of circNF1 knockdown on the maturation of miR-340. The CCK-8 assay was carried out to explore the role of circNF1 and miR-340 in the proliferation of GBM cells. circNF1 expression was found to be upregulated in GBM and was correlated with patient survival. In glioma tissue, circNF1 was inversely correlated with mature miR-340, but not with the miR-340 precursor. In GBM cells, circNF1 siRNA silencing resulted in the upregulation of mature miR-340, but not the miR-340 precursor. The cell proliferation assay showed that circNF1 siRNA silencing and miR-340 overexpression decreased the proliferation of GBM cells. In addition, the miR-340a inhibitor suppressed the role of circNF1 siRNA silencing in cell proliferation. Therefore, circNF1 siRNA silencing may inhibit GBM cell proliferation by promoting the maturation of miR-340.
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Affiliation(s)
- Li Liu
- Taizhou First People's Hospital, Taizhou, China
| | - Li Jia
- Department of Urology, Yidu Central Hospital of Weifang City, Weifang, China
| | - Jun Shao
- Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, China.,Shanghai Jinshan District Central Hospital, Shanghai, China
| | - Hanhua Liu
- Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, China.,Shanghai Jinshan District Central Hospital, Shanghai, China
| | - Qinke Wu
- Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, China.,Shanghai Jinshan District Central Hospital, Shanghai, China
| | - Xudong Wu
- Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, China.,Shanghai Jinshan District Central Hospital, Shanghai, China
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37
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Zheng S, Hou J, Chang Y, Zhao D, Yang H, Yang J. CircRNA Circ-CCND1 Aggravates Hepatocellular Carcinoma Tumorigenesis by Regulating the miR-497-5p/HMGA2 Axis. Mol Biotechnol 2021; 64:178-186. [PMID: 34564768 DOI: 10.1007/s12033-021-00391-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/08/2021] [Indexed: 12/17/2022]
Abstract
Circular RNAs (circRNAs) are key regulators in hepatocellular carcinoma (HCC) tumorigenesis and development, yet it is unclear whether circ-CCND1 participates in regulating HCC progression. Quantitative real-time polymerase chain reaction (qRT-PCR) was performed for detecting the expressions of circ-CCND1, microRNA (miR) -497-5p, and high mobility group AT-hook 2 (HMGA2) mRNA in HCC tissues and cell lines. Subcellular fractionation assay was used to analyze the localization of circ-CCND1 in HCC cell lines. Loss-of-function experiments were conducted to examine the effects of circ-CCND1 on HCC cell proliferation, migration, and invasion. Dual-luciferase reporter gene assay was employed for detecting the targeting relationships of circ-CCND1 and miR-497-5p, as well as miR-497-5p and HMGA2, respectively. Western blot was used to detect the regulatory functions of circ-CCND1 and miR-497-5p on HMGA1 expression at protein level. Circ-CCND1 and HMGA2 expressions in HCC were significantly up-regulated and miR-497-5p expression was markedly decreased. High circ-CCND1 expression was associated with relatively large tumor size and lymph node metastasis in HCC patients. In addition, circ-CCND1 was mainly distributed in the cytoplasm of HCC cells. Functionally, knockdown of circ-CCND1 remarkably suppressed HCC cell proliferation, migration, and invasion. Mechanistically, miR-497-5p was a direct target of circ-CCND1 and miR-497-5p specifically modulated HMGA2 expression. Furthermore, miR-497-5p inhibitors and or HMGA2 overexpression partially counteracted the suppressing effect induced by si-circ-CCND1 on the malignant phenotype of HCC cells. Circ-CCND1 plays a cancer-promoting role in HCC by modulating the miR-497-5p/HMGA2 axis. Therefore, targeting circ-CCND1 is likely to be a promising therapeutic strategy for HCC.
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Affiliation(s)
- Sheng Zheng
- Department of Gastroenterology, The Third People's Hospital of Yunnan Province, Beijing Road No.292, Guandu District, Kunming, 650011, Yunnan, China
| | - Jianhong Hou
- Department of Liver and Gallbladder Surgery, The Third People's Hospital of Yunnan Province, Kunming, 650011, Yunnan, China
| | - Yefei Chang
- Department of Medical Laboratory, The Third People's Hospital of Yunnan Province, Kunming, 650011, Yunnan, China
| | - Dan Zhao
- Department of Obstetrics and Gynecology, Kunming Dongfang Hospital of Yunnan Province, Kunming, 650000, Yunnan, China
| | - Hua Yang
- Department of Gastroenterology, The Third People's Hospital of Yunnan Province, Beijing Road No.292, Guandu District, Kunming, 650011, Yunnan, China
| | - Juan Yang
- Department of Gastroenterology, The Third People's Hospital of Yunnan Province, Beijing Road No.292, Guandu District, Kunming, 650011, Yunnan, China.
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38
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Fu B, Liu W, Zhu C, Li P, Wang L, Pan L, Li K, Cai P, Meng M, Wang Y, Zhang A, Tang W, An M. Circular RNA circBCBM1 promotes breast cancer brain metastasis by modulating miR-125a/BRD4 axis. Int J Biol Sci 2021; 17:3104-3117. [PMID: 34421353 PMCID: PMC8375234 DOI: 10.7150/ijbs.58916] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 07/09/2021] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs) play critical roles in tumorigenesis and the progression of various cancers. We previously identified a novel upregulated circRNA, circBCBM1 (hsa_circ_0001944), in the context of breast cancer brain metastasis. However, the potential biological function and molecular mechanism of circBCBM1 in breast cancer brain metastasis remain largely unknown. In this study, we confirmed that circBCBM1 was a stable and cytoplasmic circRNA. Functionally, circBCBM1 promoted the proliferation and migration of 231-BR cells in vitro and growth and brain metastasis in vivo. Mechanistically, circBCBM1 acted as an endogenous miR-125a sponge to inhibit miR-125a activity, resulting in the upregulation of BRD4 (bromodomain containing 4) and subsequent upregulation of MMP9 (matrix metallopeptidase 9) through Sonic hedgehog (SHH) signaling pathway. Importantly, circBCBM1 was markedly upregulated in the breast cancer brain metastasis cells and clinical tissue and plasma samples; besides, circBCBM1 overexpression in primary cancerous tissues was associated with shorter brain metastasis-free survival (BMFS) of breast cancer patients. These findings indicate that circBCBM1 is involved in breast cancer brain metastasis via circBCBM1/miR-125a/BRD4 axis. CircBCBM1 may serve as a novel diagnostic and prognostic biomarker and potential therapeutic target for breast cancer brain metastasis.
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Affiliation(s)
- Bo Fu
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Wei Liu
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Cui Zhu
- Department of Neurology, Dongchang Fu People's Hospital, Liaocheng, P.R. China
| | - Peng Li
- Department of Clinical Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Li Wang
- Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Li Pan
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Ke Li
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Peiying Cai
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Min Meng
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Yiting Wang
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Anqi Zhang
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Wenqiang Tang
- Department of Central Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
| | - Meng An
- Department of Clinical Laboratory, Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng, P.R. China
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He X, Tao Z, Zhang Z, He W, Xie Y, Zhang L. The potential role of RAAS-related hsa_circ_0122153 and hsa_circ_0025088 in essential hypertension. Clin Exp Hypertens 2021; 43:715-722. [PMID: 34392742 DOI: 10.1080/10641963.2021.1945077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background: The dysregulation of renin-angiotensin-aldosterone system (RAAS) is closely related to the development of essential hypertension (EH). MicroRNAs (miRNAs) are an important regulator of RAAS. The sponge effect of circular RNAs (circRNAs) on miRNAs makes the circRNA-miRNA-mRNA axis in EH possible, however, there is currently a lack of relevant evidence.Material and Methods: A circRNA-miRNA network was constructed based on the previous circRNAs microarray results. The expression of RAAS-related miRNAs and circRNAs were verified by qRT-PCR. Peripheral blood samples of 106 EH patients and 106 healthy volunteers were included in this study. GO and KEGG enrichment were performed to predict the role of candidate circRNAs in EH.Results: In EH patients, RAAS-related hsa-miR-483-3p and hsa-miR-27a-3p were down-regulated, and hsa_circ_0122153 and hsa_circ_0025088 were up-regulated. The relative expression of RAAS-related circRNAs and target miRNAs showed a negative correlation (hsa_circ_0122153-hsa-miR-483-3p and hsa_circ_0025088-hsa-miR-27a-3p). Hsa_circ_0122153 or hsa_circ_0025088 combined with corresponding miRNAs and environmental factors may support the early diagnosis of EH. Hsa_circ_0122153 and hsa_circ_0025088 may participate in the regulation of aldosterone and the secretion of renin through the circRNA-miRNA-mRNA network, respectively.Conclusion: Highly expressed hsa_circ_0122153 and hsa_circ_0025088 increase the risk of EH. The hsa_circ_0122153/hsa-miR-483-3p and hsa_circ_0025088/hsa-miR-27a-3p axis involving RAAS were potential EH pathways.
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Affiliation(s)
- Xin He
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China.,Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medical School of Ningbo University, Ningbo, Zhejiang Province, China
| | - Zhenbo Tao
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
| | - Zebo Zhang
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medical School of Ningbo University, Ningbo, Zhejiang Province, China
| | - Wenming He
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
| | - Yanqing Xie
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
| | - Lina Zhang
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
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40
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Pietropaolo V, Prezioso C, Moens U. Role of Virus-Induced Host Cell Epigenetic Changes in Cancer. Int J Mol Sci 2021; 22:ijms22158346. [PMID: 34361112 PMCID: PMC8346956 DOI: 10.3390/ijms22158346] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/12/2022] Open
Abstract
The tumor viruses human T-lymphotropic virus 1 (HTLV-1), hepatitis C virus (HCV), Merkel cell polyomavirus (MCPyV), high-risk human papillomaviruses (HR-HPVs), Epstein-Barr virus (EBV), Kaposi’s sarcoma-associated herpes virus (KSHV) and hepatitis B virus (HBV) account for approximately 15% of all human cancers. Although the oncoproteins of these tumor viruses display no sequence similarity to one another, they use the same mechanisms to convey cancer hallmarks on the infected cell. Perturbed gene expression is one of the underlying mechanisms to induce cancer hallmarks. Epigenetic processes, including DNA methylation, histone modification and chromatin remodeling, microRNA, long noncoding RNA, and circular RNA affect gene expression without introducing changes in the DNA sequence. Increasing evidence demonstrates that oncoviruses cause epigenetic modifications, which play a pivotal role in carcinogenesis. In this review, recent advances in the role of host cell epigenetic changes in virus-induced cancers are summarized.
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Affiliation(s)
- Valeria Pietropaolo
- Department of Public Health and Infectious Diseases, “Sapienza” University, 00185 Rome, Italy;
- Correspondence: (V.P.); (U.M.)
| | - Carla Prezioso
- Department of Public Health and Infectious Diseases, “Sapienza” University, 00185 Rome, Italy;
- IRCSS San Raffaele Roma, Microbiology of Chronic Neuro-Degenerative Pathologies, 00161 Rome, Italy
| | - Ugo Moens
- Molecular Inflammation Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø—The Arctic University of Norway, 9037 Tromsø, Norway
- Correspondence: (V.P.); (U.M.)
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41
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Comprehensive analysis of circRNA expression pattern and circRNA-miRNA-mRNA network in oral squamous cell carcinoma. Oral Oncol 2021; 121:105437. [PMID: 34265729 DOI: 10.1016/j.oraloncology.2021.105437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/25/2021] [Accepted: 06/15/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVE CircRNAs are critical gene modulators in tumor initiation and progression. However, the expression pattern and molecular pathogenesis of circRNAs in oral squamous cell carcinoma (OSCC) are still poorly characterized. METHODS RNA sequencing with CIRCexplorer2 pipeline was performed to identify circRNAs in 46 tumor-normal paired tissues from OSCC patients. Another set of 48 head and neck squamous cell carcinoma samples from the MiOncoCirc database were utilized as an independent validation. RESULTS Of the 1276 identified high-confidence circRNAs, 154 were differentially expressed between tumor and normal tissues (log2|Fold Change|≥1 and false discovery rate < 0.05). CircRNAs expression was globally down-regulated in tumors compared to normal tissues (P = 9.44 × 10-14). Correlation analysis demonstrated that the global expression of circRNAs was positively related to tumor infiltrating lymphocyte (P = 1.10 × 10-4) and stromal signature (P = 2.70 × 10-3) whereas negatively associated with cell proliferation markers (P = 4.32 × 10-2). CircRNAs-miRNAs-mRNAs regulatory network revealed 6574 interactions, and the target genes were enriched in extracellular matrix and immune-related pathways. Survival analysis were performed on target genes in immune-related pathways, and 20 genes were significantly associated with the prognostic status of OSCC in The Cancer Genome Atlas cohort. The risk model constructed with above 20 genes was associated with the prognosis status of OSCC (HR = 3.28, P = 5.06 × 10-11), and the result was validated in an independent study (GSE41613) (HR = 2.06, P = 1.73 × 10-2). CONCLUSION CircRNAs showed a global down-regulation pattern in OSCC tissues, and genes regulated by circRNAs primarily involved in immune and extracellular matrix pathways, which could also affect the OSCC prognosis, indicating that they may serve as potential prognostic biomarkers.
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Radanova M, Mihaylova G, Nazifova-Tasinova N, Levkova M, Tasinov O, Ivanova D, Mihaylova Z, Donev I. Oncogenic Functions and Clinical Significance of Circular RNAs in Colorectal Cancer. Cancers (Basel) 2021; 13:3395. [PMID: 34298612 PMCID: PMC8303601 DOI: 10.3390/cancers13143395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/13/2021] [Accepted: 07/02/2021] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer (CRC) is ranked as the second most commonly diagnosed disease in females and the third in males worldwide. Therefore, the finding of new more reliable biomarkers for early diagnosis, for prediction of metastasis, and resistance to conventional therapies is an important challenge in overcoming the disease. The current review presents circular RNAs (circRNAs) with their unique features as potential prognostic and diagnostic biomarkers in CRC. The review highlights the mechanism of action and the role of circRNAs with oncogenic functions in the CRC as well as the association between their expression and clinicopathological characteristics of CRC patients. The comprehension of the role of oncogenic circRNAs in CRC pathogenesis is growing rapidly and the next step is using them as suitable new drug targets in the personalized treatment of CRC patients.
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Affiliation(s)
- Maria Radanova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
- Laboratory of Molecular Pathology, University Hospital “St. Marina”, 9000 Varna, Bulgaria
| | - Galya Mihaylova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Neshe Nazifova-Tasinova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Mariya Levkova
- Department of Medical Genetics, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria;
| | - Oskan Tasinov
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Desislava Ivanova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Zhasmina Mihaylova
- Clinic of Medical Oncology, Military Medical Academy, 1000 Sofia, Bulgaria;
| | - Ivan Donev
- Clinic of Medical Oncology, Hospital Nadezhda, 1000 Sofia, Bulgaria
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Function of Circular RNAs in Fish and Their Potential Application as Biomarkers. Int J Mol Sci 2021; 22:ijms22137119. [PMID: 34281172 PMCID: PMC8268770 DOI: 10.3390/ijms22137119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/25/2021] [Accepted: 06/27/2021] [Indexed: 11/16/2022] Open
Abstract
Circular RNAs (circRNAs) are an emerging class of regulatory RNAs with a covalently closed-loop structure formed during pre-mRNA splicing. Recent advances in high-throughput RNA sequencing and circRNA-specific computational tools have driven the development of novel approaches to their identification and functional characterization. CircRNAs are stable, developmentally regulated, and show tissue- and cell-type-specific expression across different taxonomic groups. They play a crucial role in regulating various biological processes at post-transcriptional and translational levels. However, the involvement of circRNAs in fish immunity has only recently been recognized. There is also broad evidence in mammals that the timely expression of circRNAs in muscle plays an essential role in growth regulation but our understanding of their expression and function in teleosts is still very limited. Here, we discuss the available knowledge about circRNAs and their role in growth and immunity in vertebrates from a comparative perspective, with emphasis on cultured teleost fish. We expect that the interest in teleost circRNAs will increase substantially soon, and we propose that they may be used as biomarkers for selective breeding of farmed fish, thus contributing to the sustainability of the aquaculture sector.
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Stella M, Falzone L, Caponnetto A, Gattuso G, Barbagallo C, Battaglia R, Mirabella F, Broggi G, Altieri R, Certo F, Caltabiano R, Barbagallo GMV, Musumeci P, Ragusa M, Pietro CD, Libra M, Purrello M, Barbagallo D. Serum Extracellular Vesicle-Derived circHIPK3 and circSMARCA5 Are Two Novel Diagnostic Biomarkers for Glioblastoma Multiforme. Pharmaceuticals (Basel) 2021; 14:ph14070618. [PMID: 34198978 PMCID: PMC8308516 DOI: 10.3390/ph14070618] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/22/2021] [Accepted: 06/25/2021] [Indexed: 01/05/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most frequent and deadly human brain cancer. Early diagnosis through non-invasive biomarkers may render GBM more easily treatable, improving the prognosis of this currently incurable disease. We suggest the use of serum extracellular vesicle (sEV)-derived circular RNAs (circRNAs) as highly stable minimally invasive diagnostic biomarkers for GBM diagnosis. EVs were isolated by size exclusion chromatography from sera of 23 GBM and 5 grade 3 glioma (GIII) patients, and 10 unaffected controls (UC). The expression of two candidate circRNAs (circSMARCA5 and circHIPK3) was assayed by droplet digital PCR. CircSMARCA5 and circHIPK3 were significantly less abundant in sEVs from GBM patients with respect to UC (fold-change (FC) of -2.15 and -1.92, respectively) and GIII (FC of -1.75 and -1.4, respectively). Receiver operating characteristic curve (ROC) analysis, based on the expression of sEV-derived circSMARCA5 and circHIPK3, allowed us to distinguish GBM from UC (area under the curve (AUC) 0.823 (0.667-0.979) and 0.855 (0.704 to 1.000), with a 95% confidence interval (CI), respectively). Multivariable ROC analysis, performed by combining the expression of sEV-derived circSMARCA5 and circHIPK3 with preoperative neutrophil to lymphocyte (NLR), platelet to lymphocyte (PLR) and lymphocyte to monocyte (LMR) ratios, three known diagnostic and prognostic GBM markers, allowed an improvement in the GBM diagnostic accuracy (AUC 0.901 (0.7912 to 1.000), 95% CI). Our data suggest sEV-derived circSMARCA5 and circHIPK3 as good diagnostic biomarkers for GBM, especially when associated with preoperative NLR, PLR and LMR.
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Affiliation(s)
- Michele Stella
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
| | - Luca Falzone
- Department of Biomedical and Biotechnological Sciences, Section of Pathology, University of Catania, 95123 Catania, Italy; (L.F.); (G.G.); (M.L.)
| | - Angela Caponnetto
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
| | - Giuseppe Gattuso
- Department of Biomedical and Biotechnological Sciences, Section of Pathology, University of Catania, 95123 Catania, Italy; (L.F.); (G.G.); (M.L.)
| | - Cristina Barbagallo
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
| | - Rosalia Battaglia
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
| | - Federica Mirabella
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
| | - Giuseppe Broggi
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Section of Anatomic Pathology, University of Catania, 95123 Catania, Italy; (G.B.); (R.C.)
| | - Roberto Altieri
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Neurological Surgery, Policlinico “Rodolico-San Marco” University Hospital, University of Catania, 95123 Catania, Italy; (R.A.); (F.C.); (G.M.V.B.)
- Interdisciplinary Research Centre on the Diagnosis and Therapy of Brain Tumors, University of Catania, 95123 Catania, Italy
| | - Francesco Certo
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Neurological Surgery, Policlinico “Rodolico-San Marco” University Hospital, University of Catania, 95123 Catania, Italy; (R.A.); (F.C.); (G.M.V.B.)
- Interdisciplinary Research Centre on the Diagnosis and Therapy of Brain Tumors, University of Catania, 95123 Catania, Italy
| | - Rosario Caltabiano
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Section of Anatomic Pathology, University of Catania, 95123 Catania, Italy; (G.B.); (R.C.)
| | - Giuseppe Maria Vincenzo Barbagallo
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Neurological Surgery, Policlinico “Rodolico-San Marco” University Hospital, University of Catania, 95123 Catania, Italy; (R.A.); (F.C.); (G.M.V.B.)
- Interdisciplinary Research Centre on the Diagnosis and Therapy of Brain Tumors, University of Catania, 95123 Catania, Italy
| | - Paolo Musumeci
- Department of Physics and Astronomy, University of Catania, 95123 Catania, Italy;
| | - Marco Ragusa
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
- Interdisciplinary Research Centre on the Diagnosis and Therapy of Brain Tumors, University of Catania, 95123 Catania, Italy
| | - Cinzia Di Pietro
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
| | - Massimo Libra
- Department of Biomedical and Biotechnological Sciences, Section of Pathology, University of Catania, 95123 Catania, Italy; (L.F.); (G.G.); (M.L.)
- Research Center for Prevention, Diagnosis and Treatment of Cancer, University of Catania, 95123 Catania, Italy
| | - Michele Purrello
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
- Interdisciplinary Research Centre on the Diagnosis and Therapy of Brain Tumors, University of Catania, 95123 Catania, Italy
| | - Davide Barbagallo
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics Giovanni Sichel, University of Catania, 95123 Catania, Italy; (M.S.); (A.C.); (C.B.); (R.B.); (F.M.); (M.R.); (C.D.P.); (M.P.)
- Interdisciplinary Research Centre on the Diagnosis and Therapy of Brain Tumors, University of Catania, 95123 Catania, Italy
- Correspondence: ; Tel.: +39-0953782089
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Garlapati P, Ling J, Chiao PJ, Fu J. Circular RNAs regulate cancer-related signaling pathways and serve as potential diagnostic biomarkers for human cancers. Cancer Cell Int 2021; 21:317. [PMID: 34162394 PMCID: PMC8220689 DOI: 10.1186/s12935-021-02017-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 06/10/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) are RNAs that have an important role in various pathological processes, including cancer. After the usage of high-throughput RNA sequencing, many circRNAs were found to be differentially expressed in various cancer cell lines and regulate cell signaling pathways by modulating particular gene expressions. Understanding their role in these pathways and what cancers they are found in can set the stage for identifying diagnostic and prognostic biomarkers and therapeutic targets of cancer. This paper will discuss which circRNAs are found in different cancers and what mechanisms they use to upregulate or downregulate certain cellular components.
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Affiliation(s)
- Pranavi Garlapati
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jinjie Ling
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, 10032, USA
| | - Paul J Chiao
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jie Fu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
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Li X, Jiang W, Zhong Y, Wu L, Sun G, Wang H, Tao J, Li Z. Advances of circular RNAs in thyroid cancer: An overview. Biomed Pharmacother 2021; 140:111706. [PMID: 34004512 DOI: 10.1016/j.biopha.2021.111706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 05/03/2021] [Accepted: 05/05/2021] [Indexed: 12/19/2022] Open
Abstract
Circular RNA (circRNA) is a general term for a type of single-stranded RNAs, they are primarily generated via exon back-splice process in precursor mRNAs (pre-mRNAs). circRNAs refer to an emerging type of endogeneity-correlated closed molecules of RNA in a covalent manner. They mainly function as microRNA sponges, protein brackets, and regulatory element in transcription and splicing process. Recently, it has also starting been noticed that they serve as extraordinary models involved in polypeptides producing process. Although circRNAs have been extensively studied, their function in thyroid carcinoma is still lacking. Thus, we present the latest advances in circRNA research and summarize their fundamental rules of regulating process as well as the mechanism. More importantly, We mainly review the role and mechanism of circRNA in thyroid cancer, which provides an emerging perspective and theoretically supports the treatment of thyroid cancer.
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Affiliation(s)
- Xiao Li
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Jiang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yi Zhong
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Liangliang Wu
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Guoqiang Sun
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hanjin Wang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Jing Tao
- Department of General Surgery, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Zhouxiao Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Division of Hand, Plastic and Aesthetic Surgery, University Hospital, LMU Munich, Pettenkoferstraße 8a, 80336, Munich, Germany.
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Abstract
Post-synthesis modification of biomolecules is an efficient way of regulating and optimizing their functions. The human epitranscriptome includes a variety of more than 100 modifications known to exist in all RNA subtypes. Modifications of non-coding RNAs are particularly interesting since they can directly affect their structure, stability, interaction and function. Indeed, non-coding RNAs such as tRNA and rRNA are the most modified RNA species in eukaryotic cells. In the last 20 years, new functions of non-coding RNAs have been discovered and their involvement in human disease, including cancer, became clear. In this review, we will present the evidence connecting modifications of different non-coding RNA subtypes and their role in cancer.
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Affiliation(s)
| | | | - Luca Pandolfini
- Corresponding authors: Isaia Barbieri, University of Cambridge, Department of pathology, Division of cellular and molecular pathology, Addenbrooke's hospital, Lab block, level 3 Box 231, CB2 0QQ, Cambridge, UK. Tel.: +44 (0)1223 333917; E-mail: , Luca Pandolfini, Istituto Italiano di Tecnologia, via Enrico Melen 83, Building B, 16152 Genova, Italy. Tel.: +39 010 2897623; E-mail:
| | - Isaia Barbieri
- Corresponding authors: Isaia Barbieri, University of Cambridge, Department of pathology, Division of cellular and molecular pathology, Addenbrooke's hospital, Lab block, level 3 Box 231, CB2 0QQ, Cambridge, UK. Tel.: +44 (0)1223 333917; E-mail: , Luca Pandolfini, Istituto Italiano di Tecnologia, via Enrico Melen 83, Building B, 16152 Genova, Italy. Tel.: +39 010 2897623; E-mail:
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Wu H, Tao Y, Zhang W, Wang G, Zhang Q. circ‑0000212 promotes cell proliferation of colorectal cancer by sponging miR‑491 and modulating FOXP4 expression. Mol Med Rep 2021; 23:300. [PMID: 33649850 PMCID: PMC7930931 DOI: 10.3892/mmr.2021.11939] [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: 08/22/2020] [Accepted: 02/01/2021] [Indexed: 12/30/2022] Open
Abstract
Colorectal cancer (CRC) is a lethal and common malignancy worldwide. Non-coding (nc)RNAs have been shown to modulate tumor progression in several types of cancer. The present study aimed to investigate the role of hsa_circ_0000212 in CRC, as a sponge of microRNA (miR)-491. The expression levels of miR-491 and forkhead box P4 (FOXP4) were analyzed using data from The Cancer Genome Atlas. The association between miR-491 and FOXP4 and the clinicopathological characteristics were also analyzed. A novel circular (circ)RNA, hsa_circ_0000212, was found to sponge miR-491 based on bioinformatics analysis. The potential binding site between miR-491 and FOXP4 or circ-0000212 was validated using luciferase and RNA immunoprecipitation assays. The expression levels and distribution of circ-0000212 was also determined. Cell Counting Kit-8 and colony formation assays were performed to determine the role of miR-491 or circ-0000212 on the proliferation of the CRC cells. Decreased miR-491 or increased FOXP4 expression levels were associated with the pathological stage in patients with CRC. In addition, miR-491 inhibited cell proliferation by targeting FOXP4. circ-0000212 was increased in CRC tissues and was predominantly localized in the cytoplasm. Furthermore, circ-0000212 augmented viability of the CRC cells by sponging miR-491 and modulating FOXP4. In conclusion, circ-0000212 may serve as a novel tumor-promoter and drug target in CRC.
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Affiliation(s)
- Hongyu Wu
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Yangbao Tao
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Weiyuan Zhang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Guiyu Wang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Qian Zhang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
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Nisar S, Bhat AA, Singh M, Karedath T, Rizwan A, Hashem S, Bagga P, Reddy R, Jamal F, Uddin S, Chand G, Bedognetti D, El-Rifai W, Frenneaux MP, Macha MA, Ahmed I, Haris M. Insights Into the Role of CircRNAs: Biogenesis, Characterization, Functional, and Clinical Impact in Human Malignancies. Front Cell Dev Biol 2021; 9:617281. [PMID: 33614648 PMCID: PMC7894079 DOI: 10.3389/fcell.2021.617281] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/04/2021] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs) are an evolutionarily conserved novel class of non-coding endogenous RNAs (ncRNAs) found in the eukaryotic transcriptome, originally believed to be aberrant RNA splicing by-products with decreased functionality. However, recent advances in high-throughput genomic technology have allowed circRNAs to be characterized in detail and revealed their role in controlling various biological and molecular processes, the most essential being gene regulation. Because of the structural stability, high expression, availability of microRNA (miRNA) binding sites and tissue-specific expression, circRNAs have become hot topic of research in RNA biology. Compared to the linear RNA, circRNAs are produced differentially by backsplicing exons or lariat introns from a pre-messenger RNA (mRNA) forming a covalently closed loop structure missing 3′ poly-(A) tail or 5′ cap, rendering them immune to exonuclease-mediated degradation. Emerging research has identified multifaceted roles of circRNAs as miRNA and RNA binding protein (RBP) sponges and transcription, translation, and splicing event regulators. CircRNAs have been involved in many human illnesses, including cancer and neurodegenerative disorders such as Alzheimer’s and Parkinson’s disease, due to their aberrant expression in different pathological conditions. The functional versatility exhibited by circRNAs enables them to serve as potential diagnostic or predictive biomarkers for various diseases. This review discusses the properties, characterization, profiling, and the diverse molecular mechanisms of circRNAs and their use as potential therapeutic targets in different human malignancies.
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Affiliation(s)
- Sabah Nisar
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Ajaz A Bhat
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Mayank Singh
- Dr. B. R. Ambedkar Institute Rotary Cancer Hospital (BRAIRCH), All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | | | - Arshi Rizwan
- Department of Nephrology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Sheema Hashem
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Puneet Bagga
- Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Ravinder Reddy
- Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Farrukh Jamal
- Dr. Rammanohar Lohia Avadh University, Ayodhya, India
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Gyan Chand
- Department of Endocrine Surgery, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Davide Bedognetti
- Laboratory of Cancer Immunogenomics, Cancer Research Department, Sidra Medicine, Doha, Qatar.,Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa, Italy.,College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Wael El-Rifai
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | | | - Muzafar A Macha
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science and Technology (IUST), Pulwama, India
| | - Ikhlak Ahmed
- Research Branch, Sidra Medicine, Doha, Qatar.,Research Branch, Sidra Medicine, Doha, Qatar
| | - Mohammad Haris
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar.,Laboratory Animal Research Center, Qatar University, Doha, Qatar
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Qian C, Yang Y, Lan T, Wang Y, Yao J. Hsa_circ_0043265 Restrains Cell Proliferation, Migration and Invasion of Tongue Squamous Cell Carcinoma via Targeting the miR-1243/SALL1 Axis. Pathol Oncol Res 2021; 27:587130. [PMID: 34257535 PMCID: PMC8262158 DOI: 10.3389/pore.2021.587130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/05/2021] [Indexed: 01/18/2023]
Abstract
Increasing evidence has displayed critical roles of circular RNAs (circRNAs) in tongue squamous cell carcinoma (TSCC). Hsa_circ_0043265 (circ_0043265) has been identified as a tumor suppressor in various tumors. Nevertheless, the critical roles of circ_0043265 in the initiation and progression of TSCC are yet to be fully elucidated. In our study, RNA and protein expressions were detected via qRT-PCR and Western blot. Cell proliferation, migration and invasion were evaluated via CCK-8 and transwell assays. The interactions between circ_0043265, miR-1243 and SALL1 were analyzed via bioinformatics analyses, RNA pull-down and luciferase assays, respectively. The current study demonstrated that circ_0043265 expression was downmodulated in TSCC tissues and cell lines (SCC25, SCC15, SCC9 and Cal27). Functionally, circ_0043265 overexpression led to an attenuation of cell proliferation, migration and invasion of SCC25 and Cal27 cells. Mechanistically, circ_0043265 acted as a competing endogenous RNA (ceRNA) via competitively sponging miR-1243, and restoration of miR-1243 rescued the inhibitory effects of circ_0043265 on cell proliferation, migration and invasion of SCC25 and Cal27 cells. Finally, it was observed that spalt like transcription factor 1 (SALL1), a potential target of miR-1243, was positively modulated via circ_0043265 in SCC25 and Cal27 cells, and SALL1 knockdown reversed the inhibitory effects of circ_0043265 on SCC25 and Cal27 cells. Collectively, the current study demonstrated that circ_0043265 was downmodulated in TSCC and was identified as a ceRNA that restrained the cell proliferation, migration and invasion of SCC25 and Cal27 cells via modulating the miR-1243/SALL1 axis.
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Affiliation(s)
- Cuijuan Qian
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
| | - Yisheng Yang
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
| | - Tianchen Lan
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
| | - Yichao Wang
- Department of Medical Laboratory, Taizhou Central Hospital, Taizhou University Hospital, Taizhou, China
| | - Jun Yao
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, China
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