1
|
Tian XL, Zhang TT, Cai TJ, Tian M, Liu QJ. Screening radiation-differentially expressed circular RNAs and establishing dose classification models in the human lymphoblastoid cell line AHH-1. Int J Radiat Biol 2024; 100:550-564. [PMID: 38252315 DOI: 10.1080/09553002.2024.2304850] [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: 09/17/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024]
Abstract
PURPOSE In the event of a large-scale radiological accident, rapid and high-throughput biodosimetry is the most vital basis in medical resource allocation for the prompt treatment of victims. However, the current biodosimeter is yet to be rapid and high-throughput. Studies have shown that ionizing radiation modulates expressions of circular RNAs (circRNAs) in healthy human cell lines and tumor tissue. circRNA expressions can be quantified rapidly and high-throughput. However, whether circRNAs are suitable for early radiation dose classification remains unclear. METHODS We employed transcriptome sequencing and bioinformatics analysis to screen for radiation-differentially expressed circRNAs in the human lymphoblastoid cell line AHH-1 at 4 h following exposure to 0, 2, and 5 Gy 60Co γ-rays. The dose-response relationships between differentially expressed circRNA expressions and absorbed doses were investigated using real-time polymerase chain reaction and linear regression analysis at 4 h, 24 h, and 48 h post-exposure to 0, 2, 4, 6, and 8 Gy. Six distinct dose classification models of circRNA panels were established and validated by receiver operating characteristic (ROC) curve analysis. RESULTS A total of 11 radiation-differentially expressed circRNAs were identified and validated. Based on dose-response effects, those circRNAs changed in a dose-responsive or dose-dependent manner were combined into panels A through F at 4 h, 24 h, and 48 h post-irradiation. ROC curve analysis showed that panels A through C had the potential to effectively classify exposed and non-exposed conditions, which area under the curve (AUC) of these three panels were all 1.000, and the associate p values were .009. Panels D through F excellently distinguished between different dose groups (AUC = 0.963-1.000, p < .05). The validation assay showed that panels A through F demonstrated consistent excellence in sensitivity and specificity in dose classification. CONCLUSIONS Ionizing radiation can indeed modulate the circRNA expression profile in the human lymphoblastoid cell line AHH-1. The differentially expressed circRNAs exhibit the potential for rapid and high-throughput dose classification.
Collapse
Affiliation(s)
- Xue-Lei Tian
- Chinese Center for Disease Control and Prevention, China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Beijing, PR China
| | - Ting-Ting Zhang
- Chinese Center for Disease Control and Prevention, China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Beijing, PR China
| | - Tian-Jing Cai
- Chinese Center for Disease Control and Prevention, China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Beijing, PR China
| | - Mei Tian
- Chinese Center for Disease Control and Prevention, China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Beijing, PR China
| | - Qing-Jie Liu
- Chinese Center for Disease Control and Prevention, China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Beijing, PR China
| |
Collapse
|
2
|
Yin Y, Wan J, Yu J, Wu K. Molecular Pathogenesis of Colitis-associated Colorectal Cancer: Immunity, Genetics, and Intestinal Microecology. Inflamm Bowel Dis 2023; 29:1648-1657. [PMID: 37202830 DOI: 10.1093/ibd/izad081] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Indexed: 05/20/2023]
Abstract
Patients with inflammatory bowel disease (IBD) have a high risk for colorectal cancer (CRC). This cancer type, which is strongly associated with chronic inflammation, is called colitis-associated CRC (CAC). Understanding the molecular pathogenesis of CAC is crucial to identify biomarkers necessary for early diagnosis and more effective treatment directions. The accumulation of immune cells and inflammatory factors, which constitute a complex chronic inflammatory environment in the intestinal mucosa, may cause oxidative stress or DNA damage to the epithelial cells, leading to CAC development and progression. An important feature of CAC is genetic instability, which includes chromosome instability, microsatellite instability, hypermethylation, and changes in noncoding RNAs. Furthermore, the intestinal microbiota and metabolites have a great impact on IBD and CAC. By clarifying immune, genetic, intestinal microecology, and other related pathogenesis, CAC may be more predictable and treatable.
Collapse
Affiliation(s)
- Yue Yin
- Medical School, Fourth Military Medical University, Xi'an, China
| | - Jian Wan
- Xijing Hospital of Digestive Diseases, State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Jingmin Yu
- Xijing Hospital of Digestive Diseases, State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Kaichun Wu
- Xijing Hospital of Digestive Diseases, State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
3
|
Zhang H, Guo Z, Wang X, Xian J, Zou L, Zheng C, Zhang J. Protective mechanisms of Zanthoxylum bungeanum essential oil on DSS-induced ulcerative colitis in mice based on a colonic mucosal transcriptomic approach. Food Funct 2022; 13:9324-9339. [PMID: 36069282 DOI: 10.1039/d1fo04323d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The ameliorative effects on ulcerative colitis (UC) as well as the related mechanisms of the essential oil derived from the edible herb Zanthoxylum bungeanum Maxim (ZBEO) have been demonstrated herein. Based on GC-MS analysis, 45 volatile compounds in ZBEO were determined for its quality control. In vitro studies showed that after pretreatment with ZBEO, the disordered expression levels of pro-inflammatory cytokines (TNF-α, IL-6, and IL-1β) and an anti-inflammatory cytokine (IL-10) on colon epithelial NCM460 cells induced by lipopolysaccharide (LPS) could be reversed. Additionally, oral administration of ZBEO significantly alleviated colitis in dextran sulfate sodium (DSS)-induced UC mice, including body weight loss, colon length shortening, disease activity index and colonic pathological damage. Furthermore, to uncover the anti-UC mechanisms of ZBEO, analysis of transcriptomes by next-generation sequencing technology was performed to explore the RNA genetic variation on colon tissues. Based on GO analysis and KEGG pathway analysis, a series of genetic pathways involved in the protective role of ZBEO against UC were determined. As a result, ZBEO treatment could decrease the expression of VCAM-1, TLR8, IL-1β and IL-11 mRNA as verified by qRT-PCR, which are involved in these potential genetic pathways. In conclusion, ZBEO administration would be a medicinal or dietary supplementation strategy for ulcerative colitis treatment.
Collapse
Affiliation(s)
- Huan Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China.
| | - Zhiqing Guo
- Oncology Teaching and Research Department, Hospital of Chengdu University of Traditional of Chinese Medicine, Chengdu 610072, China.
| | - Xiao Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China.
| | - Jing Xian
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China.
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu, 610106, China
| | - Chuan Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China. .,Oncology Teaching and Research Department, Hospital of Chengdu University of Traditional of Chinese Medicine, Chengdu 610072, China.
| | - Jinming Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China.
| |
Collapse
|
4
|
Chemically Induced Colitis-Associated Cancer Models in Rodents for Pharmacological Modulation: A Systematic Review. J Clin Med 2022; 11:jcm11102739. [PMID: 35628865 PMCID: PMC9146029 DOI: 10.3390/jcm11102739] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/29/2022] [Accepted: 05/10/2022] [Indexed: 02/01/2023] Open
Abstract
Animal models for colitis-associated colorectal cancer (CACC) represent an important tool to explore the mechanistic basis of cancer-related inflammation, providing important evidence that several inflammatory mediators play specific roles in the initiation and perpetuation of colitis and CACC. Although several original articles have been published describing the CACC model in rodents, there is no consensus about the induction method. This review aims to identify, summarize, compare, and discuss the chemical methods for the induction of CACC through the PRISMA methodology. METHODS We searched MEDLINE via the Pubmed platform for studies published through March 2021, using a highly sensitive search expression. The inclusion criteria were only original articles, articles where a chemically-induced animal model of CACC is described, preclinical studies in vivo with rodents, and articles published in English. RESULTS Chemically inducible models typically begin with the administration of a carcinogenic compound (as azoxymethane (AOM) or 1,2-dimethylhydrazine (DMH)), and inflammation is caused by repeated cycles of colitis-inducing agents (such as 2,4,6-trinitrobenzenesulfonic acid (TNBS) or dextran sulfate sodium (DSS)). The strains mostly used are C57BL/6 and Balb/c with 5-6 weeks. To characterize the preclinical model, the parameters more used include body weight, stool consistency and morbidity, inflammatory biomarkers such as tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-1β, angiogenesis markers such as proliferating cell nuclear antigen (PCNA), marker of proliferation Ki-67, and caspase 3, the presence of ulcers, thickness or hyperemia in the colon, and histological evaluation of inflammation. CONCLUSION The AOM administration seems to be important to the CACC induction method, since the carcinogenic effect is achieved with just one administration. DSS has been the more used inflammatory agent; however, the TNBS contribution should be more studied, since it allows a reliable, robust, and a highly reproducible animal model of intestinal inflammation.
Collapse
|
5
|
Yin J, Tong F, Ye Y, Hu T, Xu L, Zhang L, Zhu J, Pang Z. Hsa_circRNA_103124 Upregulation in Crohn's Disease Promotes Cell Proliferation and Inhibits Autophagy by Regulating the Hsa-miR-650/AKT2 Signaling Pathway. Front Genet 2021; 12:753161. [PMID: 34804121 PMCID: PMC8602894 DOI: 10.3389/fgene.2021.753161] [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: 08/04/2021] [Accepted: 10/20/2021] [Indexed: 12/21/2022] Open
Abstract
Circular RNAs (circRNAs) play important roles in the pathogenesis of Crohn's disease (CD). We discovered that hsa_circRNA_103124 was upregulated in CD patients in our previous study. Nonetheless, the function of hsa_circRNA_103124 is unclear. In this study, hsa_circRNA_103124 was predicted to interact with hsa-miR-650. Gene Ontology (GO) and pathway analyses identified AKT serine/threonine kinase 2 (AKT2) as the downstream target protein of hsa-miR-650. Activated AKT2 inhibits autophagy, but promotes cell proliferation. Recent studies suggest that the inhibition of autophagy is one of the mechanisms of CD pathogenesis. Therefore, we inferred that hsa_circRNA_103124 might regulate autophagy and proliferation by targeting AKT2 as a sponge for hsa-miR-650. Here, quantitative reverse transcription PCR (RT-QPCR) results revealed that upregulated hsa_circRNA_103124 expression in patients with CD was negatively correlated with hsa-miR-650 expression but positively correlated with the white blood cell count and calprotectin levels. TSC complex subunit 1 (TSC1), one of the proteins upstream of autophagy was downregulated in patients with CD. Consisting with the bioinformatics prediction, it was verified that hsa_circRNA_103124 targeted to hsa-miR650 by fluorescence in situ hybridization (FISH) and luciferase reporter assays. A hsa-miR-650 inhibitor reversed the promotion of rapamycin-induced autophagy and the inhibition of cell proliferation by the hsa_circRNA_103124 siRNA. However, hsa-miR-650 mimics reversed the inhibition of rapamycin-induced autophagy and the promotion of cell proliferation through hsa_circRNA_103124 overexpression. These results indicate that hsa_circRNA_103124 upregulation in patients with CD promotes cell proliferation and inhibits autophagy by regulating the hsa-miR-650/AKT2 signaling pathway.
Collapse
Affiliation(s)
- Juan Yin
- Department of Digestive Disease and Nutrition Research Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Fuyi Tong
- The Fifth People's Hospital of Suzhou, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Yulan Ye
- Department of Gastroenterology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Tong Hu
- Department of Gastroenterology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Lijuan Xu
- Department of Gastroenterology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Liping Zhang
- Department of Gastroenterology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Jianyun Zhu
- Department of Digestive Disease and Nutrition Research Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Zhi Pang
- Department of Digestive Disease and Nutrition Research Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China.,Department of Gastroenterology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| |
Collapse
|
6
|
Li B, Li Y, Li L, Yu Y, Gu X, Liu C, Long X, Yu Y, Zuo X. Hsa_circ_0001021 regulates intestinal epithelial barrier function via sponging miR-224-5p in ulcerative colitis. Epigenomics 2021; 13:1385-1401. [PMID: 34528447 DOI: 10.2217/epi-2021-0230] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aims: Few circRNAs have been thoroughly explored in ulcerative colitis (UC). Materials & methods: Microarrays and qualitative real-time PCRs were used to detect and confirm dysregulated circRNAs associated with UC. Functional analysis was performed to explore the roles. Results: A total of 580 circRNAs and 87 miRNAs were simultaneously dysregulated in both inflamed and noninflamed UC colonic mucosa compared with healthy controls. Accordingly, hsa_circ_0001021 was significantly downregulated in patients with UC and was related to Mayo scores. Clinical samples and cell experiments revealed that hsa_circ_0001021 was expressed in epithelial cells and correlated with ZO-1, occludin and CLDN-2. Moreover, hsa_circ_0001021 sponged miR-224-5p to upregulate smad4 and increased ZO-1 and occludin. Conclusion: Hsa_circ_0001021 is related to UC severity and regulates epithelial barrier function via sponging miR-224-5p.
Collapse
Affiliation(s)
- Bing Li
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yan Li
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Lixiang Li
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yu Yu
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiang Gu
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Chang Liu
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xin Long
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yanbo Yu
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiuli Zuo
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Robot Engineering Laboratory for Precise Diagnosis & Therapy of GI Tumor, Qilu Hospital of Shandong University, Jinan, Shandong, China
| |
Collapse
|
7
|
Zhou W, Zhang H, Pan Y, Xu Y, Cao Y. circRNA expression profiling of colon tissue from mesalazine-treated mouse of inflammatory bowel disease reveals an important circRNA-miRNA-mRNA pathway. Aging (Albany NY) 2021; 13:10187-10207. [PMID: 33819198 PMCID: PMC8064189 DOI: 10.18632/aging.202780] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/23/2020] [Indexed: 12/13/2022]
Abstract
Mesalazine (5-aminosalicylic acid, 5-ASA) has been widely used to treat inflammatory bowel disease (IBD). However, it remains unclear about the underlying biological mechanisms of IBD pathogenesis and mesalazine treatment, which could be partially clarified by exploring the profiling of circular RNAs (circRNAs) using RNA-seq. A total of 15 mice (C57BL/6) were randomly assigned to three equally sized groups: control, dextran sulfate sodium (DSS, using DSS to induce IBD), and DSS+5-ASA (using mesalazine to treat IBD). We randomly selected three mice of each group to collect colon tissues for RNA-seq and then performed bioinformatic analysis for two comparisons: DSS vs. control and DSS+5-ASA vs. DSS. Comparisons of a series of indicators (e.g., body weight) verified the establishment of DSS-induced IBD mouse model and the effectiveness of mesalazine in treating IBD. We identified 182 differentially expressed circRNAs, including 55 up-regulated and 47 down-regulated circRNAs when comparing the DSS+5-ASA with the DSS group. These 102 circRNA-associated genes were significantly involved in the N-Glycan biosynthesis and lysine degradation. The network analysis of circRNA-miRNA-mRNAs identified an important pathway, i.e., chr10:115386962-115390436+/mmu-miR-6914-5p/Atg7, which is related to autophagy. The findings provide new insights into the biological mechanisms of IBD pathogenesis and mesalazine treatment, particularly highlighting the circRNA-miRNA-mRNA pathway.
Collapse
Affiliation(s)
- Wei Zhou
- Department of Anal-Rectal Surgery, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06510, United States of America
| | - Haiyin Zhang
- Department of Biochemistry, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yibin Pan
- Department of Anal-Rectal Surgery, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yanwu Xu
- Department of Biochemistry, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yongqing Cao
- Department of Anal-Rectal Surgery, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| |
Collapse
|
8
|
Long F, Lin Z, Li L, Ma M, Lu Z, Jing L, Li X, Lin C. Comprehensive landscape and future perspectives of circular RNAs in colorectal cancer. Mol Cancer 2021; 20:26. [PMID: 33536039 PMCID: PMC7856739 DOI: 10.1186/s12943-021-01318-6] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 01/19/2021] [Indexed: 12/14/2022] Open
Abstract
Colorectal cancer (CRC) is a common hereditary tumor that is often fatal. Its pathogenesis involves multiple genes, including circular RNAs (circRNAs). Notably, circRNAs constitute a new class of noncoding RNAs (ncRNAs) with a covalently closed loop structure and have been characterized as stable, conserved molecules that are abundantly expressed in tissue/development-specific patterns in eukaryotes. Based on accumulating evidence, circRNAs are aberrantly expressed in CRC tissues, cells, exosomes, and blood from patients with CRC. Moreover, numerous circRNAs have been identified as either oncogenes or tumor suppressors that mediate tumorigenesis, metastasis and chemoradiation resistance in CRC. Although the regulatory mechanisms of circRNA biogenesis and functions remain fairly elusive, interesting results have been obtained in studies investigating CRC. In particular, the expression of circRNAs in CRC is comprehensively modulated by multiple factors, such as splicing factors, transcription factors, specific enzymes and cis-acting elements. More importantly, circRNAs exert pivotal effects on CRC through various mechanisms, including acting as miRNA sponges or decoys, interacting with RNA binding proteins, and even translating functional peptides. Finally, circRNAs may serve as promising diagnostic and prognostic biomarkers and potential therapeutic targets in the clinical practice of CRC. In this review, we discuss the dysregulation, functions and clinical significance of circRNAs in CRC and further discuss the molecular mechanisms by which circRNAs exert their functions and how their expression is regulated. Based on this review, we hope to reveal the functions of circRNAs in the initiation and progression of cancer and highlight the future perspectives on strategies targeting circRNAs in cancer research.
Collapse
Affiliation(s)
- Fei Long
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of The University of South China, Hengyang, Hunan, 421001, P.R. China
| | - Zhi Lin
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P.R. China
| | - Liang Li
- Class 25 Grade 2016, The Five-Year Program in Clinical Medicine, School of Medicine, University of South China, Hengyang, Hunan, 421001, P.R. China
| | - Min Ma
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Zhixing Lu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Liang Jing
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Xiaorong Li
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China.
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China.
- School of Life Sciences, Central South University, Changsha, 410078, Hunan, China.
| |
Collapse
|
9
|
Which long noncoding RNAs and circular RNAs contribute to inflammatory bowel disease? Cell Death Dis 2020; 11:456. [PMID: 32541691 PMCID: PMC7295799 DOI: 10.1038/s41419-020-2657-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel disease (IBD), a chronic relapsing gastrointestinal inflammatory disease, mainly comprises ulcerative colitis (UC) and Crohn’s disease (CD). Although the mechanisms and pathways of IBD have been widely examined in recent decades, its exact pathogenesis remains unclear. Studies have focused on the discovery of new therapeutic targets and application of precision medicine. Recently, a strong connection between IBD and noncoding RNAs (ncRNAs) has been reported. ncRNAs include microRNAs (miRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs). The contributions of lncRNAs and circRNAs in IBD are less well-studied compared with those of miRNAs. However, lncRNAs and circRNAs are likely to drive personalized therapy for IBD. They will enable accurate diagnosis, prognosis, and prediction of therapeutic responses and promote IBD therapy. Herein, we briefly describe the molecular functions of lncRNAs and circRNAs and provide an overview of the current knowledge of the altered expression profiles of lncRNAs and circRNAs in patients with IBD. Further, we discuss how these RNAs are involved in the nosogenesis of IBD and are emerging as biomarkers.
Collapse
|
10
|
Nie H, Wang Y, Liao Z, Zhou J, Ou C. The function and mechanism of circular RNAs in gastrointestinal tumours. Cell Prolif 2020; 53:e12815. [PMID: 32515024 PMCID: PMC7377939 DOI: 10.1111/cpr.12815] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/21/2020] [Accepted: 04/04/2020] [Indexed: 12/12/2022] Open
Abstract
Gastrointestinal tumours are tumours that originate in the digestive tract and have extremely high morbidity and mortality. The main categories include: oesophageal, gastric, and colorectal cancers. Circular RNAs are a new class of non‐coding RNAs with a covalent closed‐loop structure without a 5’ cap or a 3’ poly A tail, which can encode a small amount of polypeptide. Recent studies have shown that circRNAs are involved in multiple biological processes during the development of gastrointestinal tumours including proliferation, invasion and metastasis, radio‐ and chemoresistance, and inflammatory responses. Also, the clinical and pathological characteristics of the patient, such as staging and lymph node metastasis, are closely associated with the expression level of circRNAs. Further investigation of the function and the role of circRNAs in the development of gastrointestinal tumours will provide new directions for its clinical diagnosis and treatment.
Collapse
Affiliation(s)
- Hui Nie
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Yutong Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Zhiming Liao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China.,Department of Pathology, the Fourth Hospital of Changsha, Changsha, China
| | - Jianhua Zhou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Chunlin Ou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
11
|
Wang T, Chen N, Ren W, Liu F, Gao F, Ye L, Han Y, Zhang Y, Liu Y. Integrated analysis of circRNAs and mRNAs expression profile revealed the involvement of hsa_circ_0007919 in the pathogenesis of ulcerative colitis. J Gastroenterol 2019; 54:804-818. [PMID: 31037450 DOI: 10.1007/s00535-019-01585-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/22/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Ulcerative colitis (UC) is characterized by chronic inflammation in the colon and epigenetic factors underlying the occurrence. Circular RNAs (circRNAs) have been under intensive focus due to the circular construct and gene-regulating functions. However, the changes and roles of circRNAs in UC remain unknown. METHODS Microarrays were used to detect the differentially expressed genes, and quantitative real-time PCR was used to identify the changes in UC. In silico analyses were performed to predict the functions of circRNAs and mRNAs. In vitro, epithelial cell lines were stimulated by pro-inflammation effectors to test the alterations in circRNAs. CircRNAs-microRNAs-mRNAs network clarified the potential mechanisms underlying circRNAs in UC. The binding site between hsa_circ_0007919 and miR-138 or let-7a was verified using dual-luciferase assay. RESULTS A total of 264 significantly dysregulated circRNAs and 1869 differentially expressed mRNAs in inflamed mucosa were compared with the non-inflamed mucosa in UC. Hsa_circ_0004662 and hsa_circ_0007919 were altered largely in UC tissues. Hsa_circ_0007919 was reduced persistently after inflammatory treatments, and it was relevant to Mayo endoscopic subscores and the expression of tight junction molecules. Finally, hsa_circ_0007919 could harbor miR-138, and let-7a to regulate the targeted mRNAs EPC1 and VIPR1. CONCLUSIONS Several circRNAs were differentially expressed in UC. Hsa_circ_0007919 is related to clinical characteristics and epithelial integrity by binding to hsa-let-7a, hsa-miR-138 to regulate the target genes. CircRNAs, especially hsa_circ_0007919, are associated with the pathogenesis and development of UC, with potential diagnostic and therapeutic implications.
Collapse
Affiliation(s)
- Tingting Wang
- Institute of Clinical Molecular Biology and Central Laboratory, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China.,Department of Gatroenterology, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Ning Chen
- Department of Gatroenterology, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Weixia Ren
- Institute of Clinical Molecular Biology and Central Laboratory, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Fangfang Liu
- Department of Pathology, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Fangfang Gao
- Institute of Clinical Molecular Biology and Central Laboratory, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Lei Ye
- Institute of Clinical Molecular Biology and Central Laboratory, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Ying Han
- Institute of Clinical Molecular Biology and Central Laboratory, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China
| | - Yujun Zhang
- Institute of Clinical Molecular Biology and Central Laboratory, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, People's Republic of China.
| | - Yulan Liu
- Department of Gatroenterology, Peking University People's Hospital, No. 11 Xizhimen South Street, Beijing, 100044, People's Republic of China.
| |
Collapse
|
12
|
He C, Huang C, Zhou R, Yu H. CircLMNB1 promotes colorectal cancer by regulating cell proliferation, apoptosis and epithelial-mesenchymal transition. Onco Targets Ther 2019; 12:6349-6359. [PMID: 31496737 PMCID: PMC6691939 DOI: 10.2147/ott.s204741] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 05/21/2019] [Indexed: 12/26/2022] Open
Abstract
Objective The aberrant expression of circular RNAs (circRNAs) is a frequent occurrence in various cancers. However, the functions and roles played by most circRNAs in colorectal cancer (CRC) remain largely unknown. Materials and methods Levels of circLMNB1 expression were evaluated by qRT-PCR and FISH assays. The influence of circLMNB1 knockdown on LoVo and HCT116 cell proliferation, cycling, apoptosis, migration, and invasion were assessed by the CCK-8, assay, Edu assay, flow cytometry, Hoechst staining, and the Transwell assay, respectively. The relative levels of EMT- and apoptosis-related proteins were determined by Western blotting. Results CircLMNB1 expression was significantly upregulated in CRC tissues and cells. Knockdown of circLMNB1 by siRNA in LoVo cells suppressed cell proliferation, migration and invasion, and facilitated cell cycle arrest and apoptosis In addition, we proved that knockdown of circLMNB1 upregulated E-cadherin, Bax and caspase-3 expression, and downregulated MMP2, MMP-9, and N-cadherin expression in LoVo cells. Further results showed that overexpression of circLMNB1 enhanced the malignant characteristics of HCT116 cells. Conclusion Our findings revealed that blocking of circLMNB1 could inhibit CRC development, and help to explain the underlying mechanism by which circLMNB1 knockdown inhibits the metastasis of CRC. Finally, this study suggests circLMNB1 as a novel biomarker for CRC.
Collapse
Affiliation(s)
- Chunping He
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, People's Republic of China
| | - Chao Huang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, People's Republic of China
| | - Rui Zhou
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, People's Republic of China
| | - Honggang Yu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, People's Republic of China
| |
Collapse
|
13
|
Silencing of hsa_circ_0004771 inhibits proliferation and induces apoptosis in breast cancer through activation of miR-653 by targeting ZEB2 signaling pathway. Biosci Rep 2019; 39:BSR20181919. [PMID: 30979827 PMCID: PMC6522819 DOI: 10.1042/bsr20181919] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/07/2019] [Accepted: 03/27/2019] [Indexed: 12/11/2022] Open
Abstract
Background: Circular RNAs (circRNAs) have been reported as the competing endogenous RNAs (ceRNAs) to sponge microRNAs (miRNAs) implicating in the initiation and progression of breast cancer. However, the functions of circRNAs in breast cancer have not been completely clarified. In the present study, we aimed to identify differentially expressed circRNAs in breast cancer tumor tissues, and their roles and downstream targets were investigated in the progression of breast cancer. Methods: High-throughput circRNA sequencing was performed to detect the differentially expressed circRNAs. The CCK-8 and flow cytometry were performed to measure the cell viability and apoptosis in breast cancer cells. Gene and protein expression were assayed by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blotting, respectively. Results: hsa_circ_0004771 and Zinc finger E-box binding homeobox 2 (ZEB2) expression levels were up-regulated and positively correlated in breast cancer tumor tissues. In addition, the expression levels of miR-653 were reduced in breast cancer tumor tissues. We also found that hsa_circ_0004771 functioned as a sponge of miR-653 to inhibit its expression. miR-653 as a post-transcriptional regulator down-regulated the expression of ZEB2 by binding to its 3′-UTR. Interestingly, a significant inverse correlation was observed between miR-653 and hsa_circ_0004771 or ZEB2 expression in breast cancer tumor tissues. Knockdown of hsa_circ_0004771 and ZEB2 served as equally authentic of miR-653 mimics to induce growth inhibition and apoptosis in breast cancer cells. Conclusion: Hsa_circ_0004771/miR-653/ZEB2 regulatory feedback revealed a new molecular mechanism in the pathogenesis of breast cancer, which might provide novel therapeutic targets for the treatment of breast cancer.
Collapse
|
14
|
Zhang H, Wang X, Huang H, Wang Y, Zhang F, Wang S. Hsa_circ_0067997 promotes the progression of gastric cancer by inhibition of miR-515-5p and activation of X chromosome-linked inhibitor of apoptosis (XIAP). ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:308-318. [PMID: 30688097 DOI: 10.1080/21691401.2018.1553787] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Circular RNAs (circRNAs) have been revealed to play vital roles in modulating gene expression and participate in several pathological responses including gastric cancer (GC). However, the larger numbers of the circRNAs in GC progression remain undetermined. In the present study, four GC related circRNAs expression profiles from the Gene Expression Omnibus (GEO) database were enrolled. We identified hsa_ circRNA_00067997 (circ_0067997) as an oncogene in GC. qRT-PCR was used to validate the expression of circ_0067997 in GC tissues and cell lines. The results revealed that circ_0067997 was upregulated in GC, and high circ_0067997 expression was associated with the poor overall survival rate of GC patients. Knockdown of circ_0067997 significantly reduced cell viability, inhibited colony formation, and attenuated invasive ability, whereas overexpression of circ_0067997 exhibited opposed effects. Circ_0067997 was identified to be a sponge for miR-515-5p directly. Moreover, XIAP was demonstrated to be targeted and regulated by miR-515-5p. In conclusion, circ_0067997 was identified to be an oncogene in GC by regulating miR-515-5p/XIAP axis.
Collapse
Affiliation(s)
- Haibo Zhang
- a Department of Gastroenterology , The People's Hospital of Anyang city , Anyang , China.,b Graduate School, Xinxiang Medical University , Xinxiang , China
| | - Xiumin Wang
- a Department of Gastroenterology , The People's Hospital of Anyang city , Anyang , China
| | - Hongchun Huang
- a Department of Gastroenterology , The People's Hospital of Anyang city , Anyang , China
| | - Yongfeng Wang
- c Department of Pathology , The People's Hospital of Anyang city , Anyang , China
| | - Fangfang Zhang
- d The Third Clinical College, Xinxiang Medical University , Xinxiang , China.,e Collaborative Innovation Laboratory , Xinxiang Medical University , Xinxiang , China
| | - Shaofang Wang
- b Graduate School, Xinxiang Medical University , Xinxiang , China.,f Department of Respiratory Medicine , The People's Hospital of Anyang city , Anyang , China
| |
Collapse
|
15
|
Wang L, Peng X, Lu X, Wei Q, Chen M, Liu L. Inhibition of hsa_circ_0001313 (circCCDC66) induction enhances the radio-sensitivity of colon cancer cells via tumor suppressor miR-338-3p: Effects of cicr_0001313 on colon cancer radio-sensitivity. Pathol Res Pract 2018; 215:689-696. [PMID: 30630646 DOI: 10.1016/j.prp.2018.12.032] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/04/2018] [Accepted: 12/25/2018] [Indexed: 11/28/2022]
Abstract
Circular RNA_0001313 (circ_0001313), also known as circCCDC66, is a novel circRNA that recently found to be upregulated in colon cancer tissues and promote colon cancer progression. However, the role of circ_0001313 in regulating radio-sensitivity of colon cancer and its molecular mechanism remain undetermined. Here we found circ_0001313 was significantly upregulated and miR-338-3p was downregulated in radio-resistant colon cancer tissues compared to radio-sensitive tissues. Radiation treatment in colon cells triggered a remarkable upregulation of circ_0001313 and a downregulation of miR-338-3p. Knockdown of circ_0001313 reduced cell viability, colony formation rate and increased caspase-3 activity in colon cancer cells under irradiation. Moreover, circ_0001313 act as a sponge for miR-338-3p in colon cancer cells. Furthermore, miR-338-3p could reverse the effects of circ_0001313 knockdown on cell viability, colony formation, and caspase-3 activity. These findings revealed that knockdown of circ_0001313 could induce radio-sensitivity of colon cancer cells by negatively regulating miR-338-3p.
Collapse
Affiliation(s)
- Li Wang
- Department of General Surgery, Nanhua Hospital Affiliated to Nanhua University, Hengyang, Hunan Province, 421002, China; Department of Cancer Molecular Biology, School of Pharmacy, Soochow University, Suzhou, Jiangsu Province, 215006, China
| | - Xiuda Peng
- Department of General Surgery, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, 421001, China
| | - Xianzhou Lu
- Department of General Surgery, Nanhua Hospital Affiliated to Nanhua University, Hengyang, Hunan Province, 421002, China
| | - Qinglan Wei
- Department of Hand Surgery, Nanhua Hospital Affiliated to Nanhua University, Hengyang, Hunan Province, 421002, China
| | - Mingdao Chen
- Department of General Surgery, Nanhua Hospital Affiliated to Nanhua University, Hengyang, Hunan Province, 421002, China
| | - Longfei Liu
- Department of General Surgery, Nanhua Hospital Affiliated to Nanhua University, Hengyang, Hunan Province, 421002, China.
| |
Collapse
|