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Botwe G, Fang X, Mukhtar YM, Zhou Y, Tang H, Wang M, Zhang J, Fu M, Jiang P, Gu J, Zhang X. Circular RNAs as biomarkers and therapeutic targets for gastrointestinal cancers. J Gastroenterol Hepatol 2024; 39:1230-1246. [PMID: 38504413 DOI: 10.1111/jgh.16536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/03/2024] [Accepted: 02/24/2024] [Indexed: 03/21/2024]
Abstract
Circular RNAs are a class of noncoding RNAs with covalently linked 5' and 3' ends that arise from backsplicing events. The absence of a 5' cap and a 3' poly(A) tail makes circular RNAs relatively more stable than their linear counterparts. They are evolutionary conserved and tissue-specific, and some show disease-specific expression patterns. Although their biological functions remain largely unknown, circular RNAs have been shown to play regulatory roles by acting as microRNA sponges, regulators of RNA-binding proteins, alternative splicing, and parental gene expression, and they could even encode proteins. Over the past few decades, circular RNAs have attracted wide attention in oncology owing to their implications in various tumors. Many circular RNAs have been characterized as key players in gastrointestinal cancers and influence cancer growth, progression, metastasis, and therapeutic resistance. Accumulating evidence reveals that their unique characteristics, coupled with their critical roles in tumorigenesis, make circular RNAs promising non-invasive clinical biomarkers for gastrointestinal cancers. In the present review, we summarized the biological roles of the emerging circular RNAs and their potential as biomarkers and therapeutic targets, which may help better understand their clinical significance in the management of gastrointestinal cancers.
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Affiliation(s)
- Godwin Botwe
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xinjian Fang
- Department of Oncology, Gaochun Hospital Affiliated to Jiangsu University, Nanjing, Jiangsu, China
| | - Yusif Mohammed Mukhtar
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yue Zhou
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Haozhou Tang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Maoye Wang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jiahui Zhang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Min Fu
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Pengcheng Jiang
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jianmei Gu
- Department of Clinical Laboratory Medicine, Nantong Tumor Hospital/Affiliated Tumor Hospital of Nantong University, Nantong, Jiangsu, China
| | - Xu Zhang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
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Fraboulet RM, Si Ahmed Y, Aubry M, Corre S, Galibert MD, Blum Y. Cirscan: a shiny application to identify differentially active sponge mechanisms and visualize circRNA-miRNA-mRNA networks. BMC Bioinformatics 2024; 25:53. [PMID: 38302900 PMCID: PMC10832221 DOI: 10.1186/s12859-024-05668-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/22/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Non-coding RNAs represent a large part of the human transcriptome and have been shown to play an important role in disease such as cancer. However, their biological functions are still incompletely understood. Among non-coding RNAs, circular RNAs (circRNAs) have recently been identified for their microRNA (miRNA) sponge function which allows them to modulate the expression of miRNA target genes by taking on the role of competitive endogenous RNAs (ce-circRNAs). Today, most computational tools are not adapted to the search for ce-circRNAs or have not been developed for the search for ce-circRNAs from user's transcriptomic data. RESULTS In this study, we present Cirscan (CIRcular RNA Sponge CANdidates), an interactive Shiny application that automatically infers circRNA-miRNA-mRNA networks from human multi-level transcript expression data from two biological conditions (e.g. tumor versus normal conditions in the case of cancer study) in order to identify on a large scale, potential sponge mechanisms active in a specific condition. Cirscan ranks each circRNA-miRNA-mRNA subnetwork according to a sponge score that integrates multiple criteria based on interaction reliability and expression level. Finally, the top ranked sponge mechanisms can be visualized as networks and an enrichment analysis is performed to help its biological interpretation. We showed on two real case studies that Cirscan is capable of retrieving sponge mechanisms previously described, as well as identifying potential novel circRNA sponge candidates. CONCLUSIONS Cirscan can be considered as a companion tool for biologists, facilitating their ability to prioritize sponge mechanisms for experimental validations and identifying potential therapeutic targets. Cirscan is implemented in R, released under the license GPL-3 and accessible on GitLab ( https://gitlab.com/geobioinfo/cirscan_Rshiny ). The scripts used in this paper are also provided on Gitlab ( https://gitlab.com/geobioinfo/cirscan_paper ).
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Affiliation(s)
- Rose-Marie Fraboulet
- Univ Rennes, CNRS, INSERM, IGDR (Institut de Genetique et Developpement de Rennes) - UMR 6290, ERL U1305, Equipe Labellisée Ligue Nationale contre le Cancer, 35000, Rennes, France
| | - Yanis Si Ahmed
- Univ Rennes, CNRS, INSERM, IGDR (Institut de Genetique et Developpement de Rennes) - UMR 6290, ERL U1305, Equipe Labellisée Ligue Nationale contre le Cancer, 35000, Rennes, France
| | - Marc Aubry
- INSERM, OSS (Oncogenesis Stress Signaling), UMR-S 1242, CLCC Eugene Marquis, Univ Rennes 1, 35000, Rennes, France
| | - Sebastien Corre
- Univ Rennes, CNRS, INSERM, IGDR (Institut de Genetique et Developpement de Rennes) - UMR 6290, ERL U1305, Equipe Labellisée Ligue Nationale contre le Cancer, 35000, Rennes, France
| | - Marie-Dominique Galibert
- Univ Rennes, CNRS, INSERM, IGDR (Institut de Genetique et Developpement de Rennes) - UMR 6290, ERL U1305, Equipe Labellisée Ligue Nationale contre le Cancer, 35000, Rennes, France
- Department of Molecular Genetics and Genomics, Hospital University of Rennes (CHU Rennes), 35000, Rennes, France
| | - Yuna Blum
- Univ Rennes, CNRS, INSERM, IGDR (Institut de Genetique et Developpement de Rennes) - UMR 6290, ERL U1305, Equipe Labellisée Ligue Nationale contre le Cancer, 35000, Rennes, France.
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Sun C, Zhang J, Liu J, Tong J, Wang P. Hsa_circ_0017956 Acts as miR-758-3p Sponge to Facilitate the Progression of Non-small-Cell Lung Cancer by Regulating FOXP4 Expression. Mol Biotechnol 2023; 65:1715-1728. [PMID: 36763305 DOI: 10.1007/s12033-023-00661-x] [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: 09/22/2022] [Accepted: 01/10/2023] [Indexed: 02/11/2023]
Abstract
Accumulating studies have demonstrated the important role of circular RNAs (circRNAs) in the progression of different human tumors, including non-small-cell lung cancer (NSCLC). The purpose of this study was to deeply study the function and mechanism of circ_0017956 in NSCLC. Real-time quantitative polymerase chain reaction (RT-qPCR) was applied to detect the expression of circ_0017956, microRNA-758-3p (miR-758-3p), and Forkhead Box P4 (FOXP4). Western blot was performed to determine the protein levels. Cell proliferation was examined by cell counting kit-8 (CCK-8) assay and 5-ethynyl-2'-deoxyuridine (EdU) assay. Flow cytometry was used to evaluate the apoptosis of NSCLC cells. Transwell assay was applied to detect cell migratory and invasive capacities. The angiogenesis ability was evaluated by tube formation experiment. The target relationship between miR-758-3p and circ_0017956 or FOXP4 was confirmed by dual-luciferase reporter assay. Animal experiment was conducted to assess the effect of circ_0017956 in vivo. Circ_0017956 and FOXP4 were upregulated, while miR-758-3p was downregulated in NSCLC tissues and cells. Silencing of circ_0017956 significantly suppressed cell proliferation, migration, invasion, and angiogenesis, but promoted cell apoptosis in NSCLC cells. Mechanically, circ_0017956 functioned as a sponge for miR-758-3p and miR-758-3p could directly interact with FOXP4. Moreover, silencing of miR-758-3p or overexpression of FOXP4 could overturn the anticancer influence of circ_0017956 interference on NSCLC cells. Besides that, circ_0017956 knockdown hindered tumor growth in vivo. Altogether, circ_0017956 promoted the progression of NSCLC by regulating FOXP4 through sponging miR-758-3p.
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Affiliation(s)
- Chengdong Sun
- Department of Infectious Diseases, Beijing Jishuitan Hospital, MD, 26-06, District 1, Meteor Garden, Huoying, Huilongguan, Changping, Beijing, 100096, People's Republic of China.
| | - Jian Zhang
- Department of Infectious Diseases, Beijing Jishuitan Hospital, MD, 26-06, District 1, Meteor Garden, Huoying, Huilongguan, Changping, Beijing, 100096, People's Republic of China
| | - Jia Liu
- Department of Infectious Diseases, Beijing Jishuitan Hospital, MD, 26-06, District 1, Meteor Garden, Huoying, Huilongguan, Changping, Beijing, 100096, People's Republic of China
| | - Jingjing Tong
- Department of Infectious Diseases, Beijing Jishuitan Hospital, MD, 26-06, District 1, Meteor Garden, Huoying, Huilongguan, Changping, Beijing, 100096, People's Republic of China
| | - Panpan Wang
- Department of Infectious Diseases, Beijing Jishuitan Hospital, MD, 26-06, District 1, Meteor Garden, Huoying, Huilongguan, Changping, Beijing, 100096, People's Republic of China
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Chen M, Zhang L. Circ_0001806 relieves LPS-induced HK2 cell injury by regulating the expression of miR-942-5p and TXNIP. J Bioenerg Biomembr 2023; 55:301-312. [PMID: 37541979 DOI: 10.1007/s10863-023-09978-3] [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: 06/12/2023] [Accepted: 07/17/2023] [Indexed: 08/06/2023]
Abstract
Sepsis is a systemic inflammatory disease that can cause a variety of diseases, including septic acute kidney injury (AKI). Circular RNAs (circRNAs) are believed to be involved in the development of this disease. This study aims to clarify the function of circ_0001806 in lipopolysaccharide (LPS)-induced HK2 cell model and its related mechanisms. Circ_0001806 was up-regulated in septic AKI serum specimens and LPS-induced HK2 cells. Circ_0001806 knockdown promoted cell proliferation and restrained apoptosis, inflammation and oxidative stress in LPS-induced HK2 cells. In mechanism, circ_0001806 can be used as a sponge for miR-942-5p, and miR-942-5p can directly target TXNIP. Functional experiments revealed that the miR-942-5p inhibitor could reverse the alleviating effect of circ_0001806 knockdown on LPS-induced HK2 cell injury, and TXNIP addition can also reverse the inhibitory effect of miR-942-5p overexpression on LPS-induced HK2 cell injury. In addition, circ_0001806 regulated TXNIP expression through sponging miR-942-5p. Besides, exosome-derived circ_0001806 was upregulated in LPS-induced HK2 cells, while was downregulated by GW4869. The results showed that circ_0001806 knockdown could reduce LPS-induced HK2 cell injury by regulating TXNIP expression via targeting miR-942-5p, indicating that circ_0001806 might be an important biomarker for alleviating sepsis-related AKI. This might provide therapeutic strategy for the treatment of sepsis.
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Affiliation(s)
- Mingjin Chen
- Department of Emergency Medicine, Lishui Second People's Hospital, No. 69, North Ring Road, Liandu District, Lishui City, 323000, Zhejiang Province, China
| | - Lefeng Zhang
- Department of Emergency Medicine, Lishui Second People's Hospital, No. 69, North Ring Road, Liandu District, Lishui City, 323000, Zhejiang Province, China.
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5
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Liang C, Ji D, Qin F, Chen G. CAF signature predicts the prognosis of colorectal cancer patients: A retrospective study based on bulk RNA sequencing and single-cell RNA sequencing data. Medicine (Baltimore) 2023; 102:e33149. [PMID: 36897717 PMCID: PMC9997814 DOI: 10.1097/md.0000000000033149] [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: 11/04/2022] [Accepted: 02/10/2023] [Indexed: 03/11/2023] Open
Abstract
The incidence rate and mortality rate of colorectal cancer (CRC) ranks third and second globally. Cancer-associated fibroblasts (CAFs) are the major constituent of the stromal cells in the tumor microenvironment (TME) and are closely associated with patients' prognoses. Our study intended to establish a prognostic model for CRC using hallmark genes of CAFs. The expression values of genes and clinicopathological characteristics of patients were enrolled from the cancer genome atlas database as well as the gene expression omnibus database. The single-cell RNA sequencing data were collected and analyzed in the deeply integrated human single-cell omics database and cancer single-cell expression map databases. The ESTIMATE algorithm was applied to access the infiltration levels of immune and stromal cells. The prognostic genes were selected by the Cox regression analysis and the prognostic signature was constructed by the least absolute shrinkage and selection operator algorithm. gene set enrichment analysis was used to explore the enriched gene sets. In this study, based on bulk RNA sequencing and single-cell RNA sequencing data, and we found that more CAFs were infiltrated in the tumor microenvironment and consisted of 3 subtypes. Then we constructed a prognostic signature for CRC using hallmark genes of CAFs and proved that this signature exhibited high values to predict the overall survival of CRC patients in independent training and validating cohorts. Besides, function enrichment analysis revealed that our prognostic model was significantly associated with immune regulation. Further analysis showed that the infiltrated levels of tumor-suppressing immune cells and the expression of higher immune checkpoint genes in CRC tissues were higher in patients with high-risk scores. Furthermore, immunohistochemistry analysis exhibited that these genes in our prognostic signature were markedly upregulated in CRC tissues. We first constructed a signature based on CAFs hallmark genes to predict the survival of CRC patients and further revealed that the tumor-suppressing microenvironment and dysregulated immune checkpoint genes in CRC tissues were partly responsible for the poor prognosis of patients.
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Affiliation(s)
- Chen Liang
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dongze Ji
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Feng Qin
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Fang G, Xu D, Zhang T, Wang G, Qiu L, Gao X, Miao Y. Biological functions, mechanisms, and clinical significance of circular RNA in colorectal cancer. Front Oncol 2023; 13:1138481. [PMID: 36950552 PMCID: PMC10025547 DOI: 10.3389/fonc.2023.1138481] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/20/2023] [Indexed: 03/08/2023] Open
Abstract
Colorectal cancer (CRC) is a leading cause of cancer-related death worldwide due to the lack of effective diagnosis and prognosis biomarkers and therapeutic targets, resulting in poor patient survival rates. Circular RNA (circRNA) is a type of endogenous non-coding RNA (ncRNA) with a closed-loop structure that plays a crucial role in physiological processes and pathological diseases. Recent studies indicate that circRNAs are involved in the diagnosis, prognosis, drug resistance, and development of tumors, particularly in CRC. Therefore, circRNA could be a potential new target for improving CRC diagnosis, prognosis, and treatment. This review focuses on the origin and biological functions of circRNA, summarizes recent research on circRNA's role in CRC, and discusses the potential use of circRNAs as clinical biomarkers for cancer diagnosis and prognosis, as well as therapeutic targets for CRC treatment.
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Affiliation(s)
- Guida Fang
- Department of Gastrointestinal Surgery, Clinical College of Lianyungang Second People’s Hospital, Bengbu Medical College, Lianyungang, China
| | - Dalai Xu
- Department of Gastrointestinal Surgery, The Second People’s Hospital of Lianyungang City, Kangda College of Nanjing Medical University, Lianyungang, China
| | - Tao Zhang
- Department of Gastrointestinal Surgery, Clinical College of Lianyungang Second People’s Hospital, Bengbu Medical College, Lianyungang, China
| | - Gang Wang
- Department of Gastrointestinal Surgery, The Second People’s Hospital of Lianyungang City, Kangda College of Nanjing Medical University, Lianyungang, China
| | - Lei Qiu
- Department of Gastrointestinal Surgery, The Second People’s Hospital of Lianyungang City, Kangda College of Nanjing Medical University, Lianyungang, China
| | - Xuzhu Gao
- Department of Gastrointestinal Surgery, Clinical College of Lianyungang Second People’s Hospital, Bengbu Medical College, Lianyungang, China
- Department of Gastrointestinal Surgery, The Second People’s Hospital of Lianyungang City, Kangda College of Nanjing Medical University, Lianyungang, China
- Institute of Clinical Oncology, The Second People’s Hospital of Lianyungang City (Cancer Hospital of Lianyungang), Lianyungang, China
- *Correspondence: Yongchang Miao, ; Xuzhu Gao,
| | - Yongchang Miao
- Department of Gastrointestinal Surgery, Clinical College of Lianyungang Second People’s Hospital, Bengbu Medical College, Lianyungang, China
- Department of Gastrointestinal Surgery, The Second People’s Hospital of Lianyungang City, Kangda College of Nanjing Medical University, Lianyungang, China
- *Correspondence: Yongchang Miao, ; Xuzhu Gao,
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Wei Y, Li Y, Chen Y, Liu P, Huang S, Zhang Y, Sun Y, Wu Z, Hu M, Wu Q, Wu H, Liu F, She T, Ning Z. ALDH1: A potential therapeutic target for cancer stem cells in solid tumors. Front Oncol 2022; 12:1026278. [PMID: 36387165 PMCID: PMC9650078 DOI: 10.3389/fonc.2022.1026278] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/12/2022] [Indexed: 12/02/2022] Open
Abstract
Solid tumors can be divided into benign solid tumors and solid malignant tumors in the academic community, among which malignant solid tumors are called cancers. Cancer is the second leading cause of death in the world, and the global incidence of cancer is increasing yearly New cancer patients in China are always the first. After the concept of stem cells was introduced in the tumor community, the CSC markers represented by ALDH1 have been widely studied due to their strong CSC cell characteristics and potential to be the driving force of tumor metastasis. In the research results in the past five years, it has been found that ALDH1 is highly expressed in various solid cancers such as breast cancer, lung cancer, colorectal cancer, liver cancer, gastric cancer, cervical cancer, esophageal cancer, ovarian cancer, head,and neck cancer. ALDH1 can activate and transform various pathways (such as the USP28/MYC signaling pathway, ALDH1A1/HIF-1α/VEGF axis, wnt/β-catenin signaling pathway), as well as change the intracellular pH value to promote formation and maintenance, resulting in drug resistance in tumors. By targeting and inhibiting ALDH1 in tumor stem cells, it can enhance the sensitivity of drugs and inhibit the proliferation, differentiation, and metastasis of solid tumor stem cells to some extent. This review discusses the relationship and pathway of ALDH1 with various solid tumors. It proposes that ALDH1 may serve as a diagnosis and therapeutic target for CSC, providing new insights and new strategies for reliable tumor treatment.
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Affiliation(s)
- Yaolu Wei
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Yan Li
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Yenan Chen
- Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Pei Liu
- Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Sheng Huang
- Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Yuping Zhang
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Yanling Sun
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Zhe Wu
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Meichun Hu
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Qian Wu
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Hongnian Wu
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Fuxing Liu
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
- *Correspondence: Fuxing Liu, ; Tonghui She, ; Zhifeng Ning,
| | - Tonghui She
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
- *Correspondence: Fuxing Liu, ; Tonghui She, ; Zhifeng Ning,
| | - Zhifeng Ning
- School of Basic Medicine Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
- *Correspondence: Fuxing Liu, ; Tonghui She, ; Zhifeng Ning,
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Hsa_circ_0000877 facilitates the progression of diffuse large B-cell lymphoma by miR-370-3p/mitogen-activated protein kinase kinase kinase kinase 4/Hippo pathway. Anticancer Drugs 2022; 33:1091-1102. [PMID: 36066383 DOI: 10.1097/cad.0000000000001366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Diffuse large B-cell lymphoma (DLBCL) originates from B lymphocytes and is a fatal hematological malignancy. Circular RNAs have been increasingly reported as a promising biological target for cancer therapy, but their role in DLBCL remains poorly studied. Relative expression levels of has_circ_0000877 (circ_0000877), microRNA-370-3p (miR-370-3p), and mitogen-activated protein kinase kinase kinase kinase 4 (MAP4K4) were assessed by quantitative real-time PCR. Western blot analysis was employed to measure protein levels. Cell Counting Kit-8 assay and 5-ethynyl-2'-deoxyuridine (EdU) assay were used to detect the proliferation of TMD8 and U2932 cells. Cell cycle and apoptosis were investigated by flow cytometry. Transwell assay was used to analyze cell migration and invasion. Molecular interaction was determined by dual-luciferase reporter assay and RNA immunoprecipitation assay. The protein expression of Ki67 in tumor tissues of mice was detected by immunohistochemistry assay. The expression of circ_0000877 was markedly elevated in DLBCL tissues and cell lines. The decreased expression of circ_0000877 significantly inhibited proliferation, migration, and invasion of DLBCL cell lines. In addition, silencing circ_0000877 promoted cell apoptosis and induced cell cycle arrest in G0/G1 phase. Then, miR-370-3p directly interacted with circ_0000877 and MAP4K4. Circ_0000877 promoted MAP4K4 level by sponging miR-370-3p. MAP4K4 depletion inhibited the activation of Hippo pathway. Finally, circ_0000877 silencing significantly prevented the growth of DLBCL cells in vivo . Our findings revealed that circ_0000877 could regulate the malignant evolution of DLBCL by miR-370-3p/MAP4K4/Hippo pathway.
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Li X, Sun X, Kan C, Chen B, Qu N, Hou N, Liu Y, Han F. COL1A1: A novel oncogenic gene and therapeutic target in malignancies. Pathol Res Pract 2022; 236:154013. [PMID: 35816922 DOI: 10.1016/j.prp.2022.154013] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 06/28/2022] [Accepted: 07/04/2022] [Indexed: 02/07/2023]
Abstract
Collagen type I alpha 1 (COL1A1), a member of the collagen family, is involved in epithelial-mesenchymal transition, which is closely linked to malignant tumorigenesis. COL1A1 is highly expressed in various cancers and regulates various cellular processes, including cell proliferation, metastasis, apoptosis, and cisplatin resistance. COL1A1 is also associated with cancer progression and prognosis; elevated COL1A1 expression is associated with poor prognosis in cancer patients. However, the main role of COL1A as a cancer-promoting factor in specific tumors has not been reported. Additionally, the protein levels and mechanisms of action of this protein differ among tumor types. This review discusses current research progress concerning COL1A1 in different tumor types, and then summarizes its contributions to cancer progression, thus providing a basis for follow-up research and potential targets for cancer treatment.
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Affiliation(s)
- Xue Li
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Xiaodong Sun
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Chengxia Kan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Bing Chen
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Na Qu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Ningning Hou
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yongping Liu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China.
| | - Fang Han
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China; Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, and Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China.
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10
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Wang Y, Mei X, Song W, Wang C, Qiu X. LncRNA LINC00511 promotes COL1A1-mediated proliferation and metastasis by sponging miR-126-5p/miR-218-5p in lung adenocarcinoma. BMC Pulm Med 2022; 22:272. [PMID: 35842617 PMCID: PMC9287882 DOI: 10.1186/s12890-022-02070-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 07/08/2022] [Indexed: 12/12/2022] Open
Abstract
Background Lung adenocarcinoma (LUAD) is currently the leading cause of cancer-related death worldwide. Long noncoding RNAs (lncRNAs) play key roles in tumor occurrence and development as crucial cancer regulators. The present study aimed to explore the molecular mechanism and regulatory network of Linc00511 in LUAD and to identify new potential therapeutic targets for LUAD. Methods Real-time quantitative polymerase chain reaction (RT–qPCR) was performed to determine the relative Linc00511 levels in LUAD tissues and cells. The proliferation, apoptosis, migration, and invasion abilities of LUAD cells were assessed by a Cell Counting Kit-8 (CCK-8) assay, a colony formation assay, flow cytometry, and a Transwell assay. Changes in hsa_miR-126-5p, hsa_miR-218-5p, and COL1A1 expression were analyzed using western blotting and RT–qPCR. Targeted binding between miR-126-5p/miR-218-5p and Linc00511 or COL1A1 was verified with a luciferase reporter system and confirmed by an RNA pulldown assay. The participation of the PI3K/AKT signaling pathway was confirmed via western blotting. Xenograft animal experiments were performed to detect the impact of Linc00511 on LUAD tumor growth in vivo. Results In the present work, we observed that Linc00511 was upregulated in LUAD tissues and cells. Loss/gain-of-function experiments indicated that knockdown of Linc00511 significantly inhibited LUAD cell proliferation, migration and invasion and promoted LUAD cell apoptosis, whereas overexpression of Linc00511 showed the opposite effects. In addition, we determined that Linc00511 promoted COL1A1-mediated cell proliferation and cell motility by sponging miR-126-5p and miR-218-5p. Moreover, Linc00511 activated the PI3K/AKT signaling pathway through upregulation of COL1A1. Finally, silencing of Linc00511 inhibited LUAD tumor growth in vivo. Conclusions Linc00511 acts as a competing endogenous RNA to regulate COL1A1 by targeting miR-126-5p and miR-218-5p, thereby promoting the proliferation and invasion of LUAD cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02070-3.
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Affiliation(s)
- Yudong Wang
- Thoracic Surgery Department, Shengjing Hospital of China Medical University, Shenyang, 110136, Liaoning, China
| | - Xingke Mei
- Thoracic Surgery Department, Shengjing Hospital of China Medical University, Shenyang, 110136, Liaoning, China
| | - Weikang Song
- Thoracic Surgery Department, Shengjing Hospital of China Medical University, Shenyang, 110136, Liaoning, China
| | - Chen Wang
- Thoracic Surgery Department, Shengjing Hospital of China Medical University, Shenyang, 110136, Liaoning, China
| | - Xueshan Qiu
- College of Basic Medical Science, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110001, Liaoning, China. .,Department of Pathology, The First Hospital of China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang, 110122, Liaoning, China.
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11
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Qu Z, Yang KD, Luo BH, Zhang F. CAFs-secreted exosomal cricN4BP2L2 promoted colorectal cancer stemness and chemoresistance by interacting with EIF4A3. Exp Cell Res 2022; 418:113266. [PMID: 35752345 DOI: 10.1016/j.yexcr.2022.113266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 06/13/2022] [Accepted: 06/19/2022] [Indexed: 02/07/2023]
Abstract
Cancer-associated fibroblasts secreted exosomes (CAFs-exo) are important for tumor carcinogenesis and chemoresistance, but its underlying mechanism in colorectal cancer (CRC) has not yet been clarified. In this study, we investigated the regulatory mechanism of CAFs-exo cricN4BP2L2 on the proliferation, apoptosis, stemness and chemoresistance of LoVo cells. We found that CAFs-exo promoted the oxaliplatin resistance and stemness of LoVo cells, while inhibited the LoVo cell apoptosis. Moreover, knockdown of cricN4BP2L2 in CAFs-exo inhibited the oxaliplatin resistance and stemness characteristics of LoVo cells. Mechanistically, cricN4BP2L2 regulated PI3K/AKT/mTOR axis by binding to EIF4A3. Rescue experiments proved that CAFs-derived exosomal cricN4BP2L2 promoted CRC cells stemness and oxaliplatin resistance by upregulating EIF4A3. Moreover, in vivo experiments showed that depletion of cricN4BP2L2 suppressed CRC tumorigenesis growth. In conclusion, CAFs-exo cricN4BP2L2 promoted the CRC cells stemness and oxaliplatin resistance through EIF4A3/PI3K/AKT/mTOR pathway.
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Affiliation(s)
- Zhan Qu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Ke-Da Yang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Bai-Hua Luo
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Fan Zhang
- Department of Gynecology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China.
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12
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Ko CC, Hsieh YY, Yang PM. Long Non-Coding RNA MIR31HG Promotes the Transforming Growth Factor β-Induced Epithelial-Mesenchymal Transition in Pancreatic Ductal Adenocarcinoma Cells. Int J Mol Sci 2022; 23:6559. [PMID: 35743003 PMCID: PMC9223781 DOI: 10.3390/ijms23126559] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/10/2022] [Accepted: 06/10/2022] [Indexed: 02/04/2023] Open
Abstract
The epithelial-to-mesenchymal transition (EMT) describes a biological process in which polarized epithelial cells are converted into highly motile mesenchymal cells. It promotes cancer cell dissemination, allowing them to form distal metastases, and also involves drug resistance in metastatic cancers. Transforming growth factor β (TGFβ) is a multifunctional cytokine that plays essential roles in development and carcinogenesis. It is a major inducer of the EMT. The MIR31 host gene (MIR31HG) is a newly identified long non-coding (lnc)RNA that exhibits ambiguous roles in cancer. In this study, a cancer genomics analysis predicted that MIR31HG overexpression was positively correlated with poorer disease-free survival of pancreatic ductal adenocarcinoma (PDAC) patients, which was associated with upregulation of genes related to TGFβ signaling and the EMT. In vitro evidence demonstrated that TGFβ induced MIR31HG expression in PDAC cells, and knockdown of MIR31HG expression reversed TGFβ-induced EMT phenotypes and cancer cell migration. Therefore, MIR31HG has an oncogenic role in PDAC by promoting the EMT.
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Affiliation(s)
- Ching-Chung Ko
- Department of Medical Imaging, Chi Mei Medical Center, Tainan 71004, Taiwan;
- Department of Health and Nutrition, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Yao-Yu Hsieh
- Division of Hematology and Oncology, Taipei Medical University Shuang Ho Hospital, New Taipei City 23561, Taiwan;
- Division of Hematology and Oncology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Pei-Ming Yang
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- PhD Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei 11031, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Cancer Center, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
- TMU and Affiliated Hospitals Pancreatic Cancer Groups, Taipei Medical University, Taipei 11031, Taiwan
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Johnson K, Leary PJ, Govaere O, Barter MJ, Charlton SH, Cockell SJ, Tiniakos D, Zatorska M, Bedossa P, Brosnan MJ, Cobbold JF, Ekstedt M, Aithal GP, Clément K, Schattenberg JM, Boursier J, Ratziu V, Bugianesi E, Anstee QM, Daly AK. Increased serum miR-193a-5p during non-alcoholic fatty liver disease progression: Diagnostic and mechanistic relevance. JHEP Rep 2022; 4:100409. [PMID: 35072021 PMCID: PMC8762473 DOI: 10.1016/j.jhepr.2021.100409] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 10/08/2021] [Accepted: 11/09/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND & AIMS Serum microRNA (miRNA) levels are known to change in non-alcoholic fatty liver disease (NAFLD) and may serve as useful biomarkers. This study aimed to profile miRNAs comprehensively at all NAFLD stages. METHODS We profiled 2,083 serum miRNAs in a discovery cohort (183 cases with NAFLD representing the complete NAFLD spectrum and 10 population controls). miRNA libraries generated by HTG EdgeSeq were sequenced by Illumina NextSeq. Selected serum miRNAs were profiled in 372 additional cases with NAFLD and 15 population controls by quantitative reverse transcriptase PCR. RESULTS Levels of 275 miRNAs differed between cases and population controls. Fewer differences were seen within individual NAFLD stages, but miR-193a-5p consistently showed increased levels in all comparisons. Relative to NAFL/non-alcoholic steatohepatitis (NASH) with mild fibrosis (stage 0/1), 3 miRNAs (miR-193a-5p, miR-378d, and miR378d) were increased in cases with NASH and clinically significant fibrosis (stages 2-4), 7 (miR193a-5p, miR-378d, miR-378e, miR-320b, miR-320c, miR-320d, and miR-320e) increased in cases with NAFLD activity score (NAS) 5-8 compared with lower NAS, and 3 (miR-193a-5p, miR-378d, and miR-378e) increased but 1 (miR-19b-3p) decreased in steatosis, activity, and fibrosis (SAF) activity score 2-4 compared with lower SAF activity. The significant findings for miR-193a-5p were replicated in the additional cohort with NAFLD. Studies in Hep G2 cells showed that following palmitic acid treatment, miR-193a-5p expression decreased significantly. Gene targets for miR-193a-5p were investigated in liver RNAseq data for a case subgroup (n = 80); liver GPX8 levels correlated positively with serum miR-193a-5p. CONCLUSIONS Serum miR-193a-5p levels correlate strongly with NAFLD activity grade and fibrosis stage. MiR-193a-5p may have a role in the hepatic response to oxidative stress and is a potential clinically tractable circulating biomarker for progressive NAFLD. LAY SUMMARY MicroRNAs (miRNAs) are small pieces of nucleic acid that may turn expression of genes on or off. These molecules can be detected in the blood circulation, and their levels in blood may change in liver disease including non-alcoholic fatty liver disease (NAFLD). To see if we could detect specific miRNA associated with advanced stages of NAFLD, we carried out miRNA sequencing in a group of 183 patients with NAFLD of varying severity together with 10 population controls. We found that a number of miRNAs showed changes, mainly increases, in serum levels but that 1 particular miRNA miR-193a-5p consistently increased. We confirmed this increase in a second group of cases with NAFLD. Measuring this miRNA in a blood sample may be a useful way to determine whether a patient has advanced NAFLD without an invasive liver biopsy.
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Key Words
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- AUROC, area under the receiver operating characteristic
- Biomarker
- CPM, counts per million
- Ct, cycle threshold
- ER, endoplasmic reticulum
- FC, fold change
- FIB-4, fibrosis-4
- FLIP, fatty liver inhibition of progression
- GTEx, Genotype-Tissue Expression
- MicroRNA
- NAFL, non-alcoholic fatty liver
- NAFLD, non-alcoholic fatty liver disease
- NAS, NAFLD activity score
- NASH, non-alcoholic steatohepatitis
- Non-alcoholic fatty liver disease
- PCA, principal component analysis
- SAF, steatosis–activity–fibrosis
- Sequencing
- TGF-β, transforming growth factor-beta
- cDNA, complementary DNA
- logFC, log2 fold change
- miRNA, microRNA
- qPCR, quantitative PCR
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Affiliation(s)
- Katherine Johnson
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Peter J. Leary
- Bioinformatics Support Unit, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Olivier Govaere
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Matthew J. Barter
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Sarah H. Charlton
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Simon J. Cockell
- Bioinformatics Support Unit, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Dina Tiniakos
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Michalina Zatorska
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Pierre Bedossa
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - M. Julia Brosnan
- Internal Medicine Research Unit, Pfizer Inc., Cambridge, MA, USA
| | - Jeremy F. Cobbold
- Oxford Liver Unit, NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK
| | - Mattias Ekstedt
- Division of Diagnostics and Specialist Medicine, Department of Health, Medicine, and Caring Sciences, Linköping University, Linköping, Sweden
| | - Guruprasad P. Aithal
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Nottingham, UK
| | - Karine Clément
- Institute of Cardiometabolism and Nutrition, Pitié Salpêtrière Hospital, Paris, France
- Assistance Publique – Hopitaux de Paris, Paris, France
| | - Jörn M. Schattenberg
- Metabolic Liver Research Program, I. Department of Medicine, University Medical Center of Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Jerome Boursier
- Hepatology Department, Angers University Hospital, Angers, France
| | - Vlad Ratziu
- Institute of Cardiometabolism and Nutrition, Pitié Salpêtrière Hospital, Paris, France
- Assistance Publique – Hopitaux de Paris, Paris, France
| | - Elisabetta Bugianesi
- Division of Gastroenterology, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Quentin M. Anstee
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Newcastle NIHR Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Trust, Newcastle upon Tyne, UK
| | - Ann K. Daly
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
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Chen X, She P, Wang C, Shi L, Zhang T, Wang Y, Li H, Qian L, Li M. Hsa_circ_0001806 promotes glycolysis and cell progression in hepatocellular carcinoma through miR-125b/HK2. J Clin Lab Anal 2021; 35:e23991. [PMID: 34664737 PMCID: PMC8649327 DOI: 10.1002/jcla.23991] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Hepatocellular carcinoma (HCC) is one of the most common malignant tumours and a leading cause of cancer death. Circular RNA (circRNA) has been demonstrated to play an important role in regulating tumour development. The current study aims to explore the specific role of hsa_circ_0001806 during HCC progression. METHODS The expression of hsa_circ_0001806 in HCC tissues and cells was measured through qRT-PCR. Cell proliferation, apoptosis and migration were measured using CCK-8 and Annexin V/PI staining kits, and Transwell assay. Bioinformatics prediction and dual-luciferase reporter assay were adopted to explore the mechanism underlying the cell function of hsa_circ_0001806 in HCC cells. In addition, glycolysis was assessed by measuring the glucose uptake, lactate production and ATP level using a glucose assay kit, fluorometric lactate assay kit and ATP detection assay kit. RESULTS Hsa_circ_0001806 was up-regulated in HCC tissues and cells and positively associated with the advanced TNM stage, metastasis and poor overall survival. The overexpression of hsa_circ_0001806 promoted HCC cell proliferation, migration and glycolysis and inhibited cell apoptosis, while the silence of hsa_circ_0001806 showed an opposite effect. Furthermore, hsa_circ_0001806 acted as a sponge of miR-125b to up-regulate hexokinase II (HK2) expression. In addition, the inhibition of miR-125b and HK2 overexpression partly reversed the inhibitory effect of hsa_circ_0001806 silencing on HCC cell proliferation, migration and glycolysis. CONCLUSION The inhibition of hsa_circ_0001806 suppressed HCC cell proliferation, migration and glycolysis through mediating miR-125b/HK2 axis.
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Affiliation(s)
- Xueyi Chen
- College of Life SciencesNorthwest UniversityXi’anChina
| | - Pengyun She
- The First Affliliated Hospital of Xi’an Jiao Tong UniversityXi’anChina
- Department of EndocrinologyThe Affiliated Hospital of Northwest University Xi’an NO.3 HospitalXi’anChina
| | - Caihua Wang
- College of Life SciencesNorthwest UniversityXi’anChina
| | - Lina Shi
- Department of EndocrinologyThe Affiliated Hospital of Northwest University Xi’an NO.3 HospitalXi’anChina
| | - Tieying Zhang
- Department of NeurologyThe Affiliated Hospital of Northwest University Xi’an NO.3 HospitalXi’anChina
| | - Yanfei Wang
- Department of NeurologyThe Affiliated Hospital of Northwest University Xi’an NO.3 HospitalXi’anChina
| | - Haixia Li
- Department of GeriatricsXianyang first people’s HospitalXianyangChina
| | - Lu Qian
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular DiseasesThe Affiliated Hospital of Northwest University Xi’an NO.3 HospitalXi’anChina
| | - Man Li
- Department of Internal MedicineThe Affiliated Hospital of Northwest University Xi’an NO.3 HospitalXi’anChina
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15
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Zhou H, Chen Y. CircRNA has_circ_0001806 promotes hepatocellular carcinoma progression via the miR-193a-5p/MMP16 pathway. Braz J Med Biol Res 2021; 54:e11459. [PMID: 34730679 PMCID: PMC8555451 DOI: 10.1590/1414-431x2021e11459] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/02/2021] [Indexed: 12/11/2022] Open
Abstract
Reportedly, circular RNAs (circRNAs) are crucial regulators in cancer progression. Nonetheless, the molecular mechanism of circRNAs in hepatocellular carcinoma (HCC) has not been fully clarified. Gene expression omnibus (GEO) database was employed to screen out the differentially expressed circRNAs in HCC. qRT-PCR and western blot were executed to detect circ_0001806 expression, miR-193a-5p expression, and MMP16 mRNA and protein expressions in HCC. The effect of circ_0001806 on HCC was analyzed by the CCK-8 method and Transwell experiment. RIP assay, pull-down experiment, and dual-luciferase reporter gene experiment were applied to validate the targeting relationships among circ_0001806, miR-193a-5p, and MMP16. Circ_0001806 was up-modulated in HCC tissues and cell lines. Knockdown of circ_0001806 impeded the multiplication, migration, and invasion of HCC cells. Circ_0001806 could up-regulate MMP16 expression through repressing miR-193a-5p, thereby facilitating the malignant biological behaviors of HCC. Circ_0001806 promoted HCC progression by regulating miR-193a-5p/MMP16 axis.
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Affiliation(s)
- Hongmu Zhou
- Department of Geriatrics, General Hospital of The Yangtze River Shipping, Wuhan Brain Hospital, Wuhan, Hubei, China
| | - Ying Chen
- Department of Gastroenterology, Affiliated Hospital of Jianghan University, Wuhan Sixth Hospital, Wuhan, Hubei, China
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Huang J, Yu S, Ding L, Ma L, Chen H, Zhou H, Zou Y, Yu M, Lin J, Cui Q. The Dual Role of Circular RNAs as miRNA Sponges in Breast Cancer and Colon Cancer. Biomedicines 2021; 9:biomedicines9111590. [PMID: 34829818 PMCID: PMC8615412 DOI: 10.3390/biomedicines9111590] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/13/2021] [Accepted: 10/27/2021] [Indexed: 02/07/2023] Open
Abstract
Breast cancer (BC) and colon cancer (CRC) are the two most deadly cancers in the world. These cancers partly share the same genetic background and are partially regulated by the same genes. The outcomes of traditional chemoradiotherapy and surgery remain suboptimal, with high postoperative recurrence and a low survival rate. It is, therefore, urgent to innovate and improve the existing treatment measures. Many studies primarily reported that the microRNA (miRNA) sponge functions of circular RNA (circRNA) in BC and CRC have an indirect relationship between the circRNA–miRNA axis and malignant behaviors. With a covalent ring structure, circRNAs can regulate the expression of target genes in multiple ways, especially by acting as miRNA sponges. Therefore, this review mainly focuses on the roles of circRNAs as miRNA sponges in BC and CRC based on studies over the last three years, thus providing a theoretical reference for finding new therapeutic targets in the future.
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Affiliation(s)
- Jiashu Huang
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Shenghao Yu
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Lei Ding
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Lingyuan Ma
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Hongjian Chen
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Hui Zhou
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Yayan Zou
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Min Yu
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Jie Lin
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
| | - Qinghua Cui
- Lab of Biochemistry & Molecular Biology, School of Life Sciences, Yunnan University, Kunming 650091, China; (J.H.); (S.Y.); (L.D.); (L.M.); (H.C.); (H.Z.); (Y.Z.); (M.Y.); (J.L.)
- Key Lab of Molecular Cancer Biology, Yunnan Education Department, Kunming 650091, China
- Correspondence: ; Tel.: +86-871-65031412
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Ameli-Mojarad M, Ameli-Mojarad M, Hadizadeh M, Young C, Babini H, Nazemalhosseini-Mojarad E, Bonab MA. The effective function of circular RNA in colorectal cancer. Cancer Cell Int 2021; 21:496. [PMID: 34535136 PMCID: PMC8447721 DOI: 10.1186/s12935-021-02196-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 01/04/2023] Open
Abstract
Colorectal cancer (CRC) is the 3rd most common type of cancer worldwide. Late detection plays role in one-third of annual mortality due to CRC. Therefore, it is essential to find a precise and optimal diagnostic and prognostic biomarker for the identification and treatment of colorectal tumorigenesis. Covalently closed, circular RNAs (circRNAs) are a class of non-coding RNAs, which can have the same function as microRNA (miRNA) sponges, as regulators of splicing and transcription, and as interactors with RNA-binding proteins (RBPs). Therefore, circRNAs have been investigated as specific targets for diagnostic and prognostic detection of CRC. These non-coding RNAs are also linked to metastasis, proliferation, differentiation, migration, angiogenesis, apoptosis, and drug resistance, illustrating the importance of understanding their involvement in the molecular mechanisms of development and progression of CRC. In this review, we present a detailed summary of recent findings relating to the dysregulation of circRNAs and their potential role in CRC.
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Affiliation(s)
| | - Melika Ameli-Mojarad
- Department of Biology, Faculty of Basic Science, Kharrazi University, Tehran, Iran
| | - Mahrooyeh Hadizadeh
- School of Medicine, University of Sunderland, City Campus, Chester Road, Sunderland, SR1 3SD UK
| | - Chris Young
- Institute of Health & Life Sciences, De Montfort University, Leicester, UK
| | - Hosna Babini
- Department of Cell & Molecular Biology, Faculty of Science, Tehran University of Medical Science, Tehran, Iran
| | - Ehsan Nazemalhosseini-Mojarad
- Gastroenterology and Liver Disease Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maziar Ashrafian Bonab
- School of Medicine, University of Sunderland, City Campus, Chester Road, Sunderland, SR1 3SD UK
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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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19
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Li M, Zhuang J, Kang D, Chen Y, Song W. Identification of circRNA circ-CSPP1 as a potent driver of colorectal cancer by directly targeting the miR-431/LASP1 axis. Open Life Sci 2021; 16:523-536. [PMID: 34124372 PMCID: PMC8165258 DOI: 10.1515/biol-2021-0053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/27/2020] [Accepted: 12/29/2020] [Indexed: 12/28/2022] Open
Abstract
Colorectal cancer (CRC) is the third most common malignancy worldwide. Circular RNAs (circRNAs) have been implicated in cancer biology. The purpose of the current work is to investigate the precise parts of circRNA centrosome and spindle pole-associated protein 1 (circ-CSPP1) in the progression of CRC. Our data showed that circ-CSPP1 was significantly overexpressed in CRC tissues and cells. The knockdown of circ-CSPP1 attenuated cell proliferation, migration, invasion and promoted apoptosis in vitro and weakened tumor growth in vivo. circ-CSPP1 directly targeted miR-431, and circ-CSPP1 knockdown modulated CRC cell progression in vitro via upregulating miR-431. Moreover, LIM and SH3 protein 1 (LASP1) was a functional target of miR-431 in modulating CRC cell malignant progression. Furthermore, circ-CSPP1 in CRC cells functioned as a posttranscriptional regulator on LASP1 expression by targeting miR-431. Our present study identified the oncogenic role of circ-CSPP1 in CRC partially by the modulation of the miR-431/LASP1 axis, providing evidence for circ-CSPP1 as a promising biomarker for CRC management.
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Affiliation(s)
- Minghao Li
- Department of Gastrointestinal Anorectal Surgery, Tianjin Third Central Hospital, No. 83, Jintang Road, Hedong District, Tianjin, 300170, China
| | - Jianbin Zhuang
- Department of Gastrointestinal Anorectal Surgery, Tianjin Third Central Hospital, No. 83, Jintang Road, Hedong District, Tianjin, 300170, China
| | - Di Kang
- Department of Gastrointestinal Anorectal Surgery, Tianjin Third Central Hospital, No. 83, Jintang Road, Hedong District, Tianjin, 300170, China
| | - Yuzhuo Chen
- Department of Gastrointestinal Anorectal Surgery, Tianjin Third Central Hospital, No. 83, Jintang Road, Hedong District, Tianjin, 300170, China
| | - Weiliang Song
- Department of Gastrointestinal Anorectal Surgery, Tianjin Third Central Hospital, No. 83, Jintang Road, Hedong District, Tianjin, 300170, China
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Ghafouri-Fard S, Taheri M, Hussen BM, Vafaeimanesh J, Abak A, Vafaee R. Function of circular RNAs in the pathogenesis of colorectal cancer. Biomed Pharmacother 2021; 140:111721. [PMID: 34015582 DOI: 10.1016/j.biopha.2021.111721] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/20/2021] [Accepted: 05/07/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) comprise a group of noncoding RNAs with a circular conformation being constructed by either classic spliceosome-mediated or lariat-kind of splicing. They have tissue and temporal specificity and are involved in different biological functions. A vast body of literature has demonstrated critical roles of circRNAs in the formation or progression of neoplasms. Hsa_circ_0066631, hsa_circ_0082096, ciRS-7, circMAT2B, circ_052666, circMBOAT2, circPACRGL and circ_0128846 are among up-regulated circRNAs in CRC. Instead, expression levels of circTADA2A, circ_022743, circ_004452, circ-FBXW7, circ0106714, circFNDC3B and circ_cse1 have been decreased in CRC samples. Finally, expression levels of circRNA-100876, hsa_circ_0002320, circNOL10, circ_0056618, circ_0060745, circ-0004277, hsa_circRNA_102958, circPPP1R12A, hsa_circ_0007534, circ_0079993 and hsa_circ_0005075 can be used for prediction of clinical outcome of patients CRC.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | | | - Atefe Abak
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Vafaee
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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21
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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.
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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.
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22
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Yuan Y, Zhou X, Kang Y, Kuang H, Peng Q, Zhang B, Liu X, Zhang M. Circ-CCS is identified as a cancer-promoting circRNA in lung cancer partly by regulating the miR-383/E2F7 axis. Life Sci 2020; 267:118955. [PMID: 33359669 DOI: 10.1016/j.lfs.2020.118955] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/03/2020] [Accepted: 12/16/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Increasing biomolecules have been found to be involved in the lung cancer development. This study will perform the function and mechanism analyses of a novel circular RNA copper chaperone for superoxide dismutase (circ-CCS) in lung cancer. METHODS Circ-CCS, microRNA-383 (miR-383) and E2F transcription factor 7 (E2F7) were quantified by quantitative real-time polymerase chain reaction (qRT-PCR). Cell viability was detected using Cell Counting Kit-8 (CCK-8). Clonal ability was measured by colony formation assay. Cell apoptosis was determined via flow cytometry. Cell migration and invasion were assessed by transwell assay. Detection of protein was completed using western blot. Xenograft assay was used for the functional analysis of circ-CCS in vivo. The binding between targets was proved by dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. E2F7 protein level was also examined by Immunohistochemistry (IHC) analysis in human tissues. RESULTS Circ-CCS was upregulated in lung cancer and could predict poor prognosis. Downregulation of circ-CCS inhibited lung cancer cell growth and metastasis while promoted apoptosis in vitro, and suppressed tumorigenesis of lung cancer in vivo. Circ-CCS had sponge effect on miR-383 and the function of si-circ-CCS was achieved by upregulating miR-383. E2F7 was a target gene of miR-383 and its downregulation was responsible for the anti-cancerous role of miR-383 in lung cancer. Circ-CCS could elevate E2F7 expression via interacting with miR-383. CONCLUSION Circ-CCS was shown to facilitate lung cancer progression via the miR-383/E2F7 axis, exhibiting the pivotal value of circ-CCS in diagnosis and treatment of lung cancer.
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Affiliation(s)
- Yanli Yuan
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China
| | - Xiaolei Zhou
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China
| | - Yan Kang
- Department Two of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hongping Kuang
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China
| | - Qiang Peng
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China
| | - Bo Zhang
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China
| | - Xinxin Liu
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China
| | - Manlin Zhang
- Department of Respiratory and Critical Care Ward 3, Henan Provincial Chest Hospital, Zhengzhou, Henan, China.
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23
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Zhao X, Wang Y, Yu Q, Yu P, Zheng Q, Yang X, Gao D. Circular RNAs in gastrointestinal cancer: Current knowledge, biomarkers and targeted therapy (Review). Int J Mol Med 2020; 46:1611-1632. [PMID: 33000182 PMCID: PMC7521476 DOI: 10.3892/ijmm.2020.4731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/01/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs) are a type of endogenous non‑coding RNAs that are connected at the 3' and 5' ends by exon or intron cyclization, which forms a covalently closed loop. They are stable, well conserved, exhibit specific expression in mammalian cells and can function as microRNA (miRNA or miR) sponges to regulate the target genes of miRNAs, which influences biological processes. Such as tumor proliferation, invasion, metastasis, apoptosis and tumor stage. circRNAs represent promising candidates for clinical diagnosis and treatment. In the present review, the biogenesis, classification and functions of circRNAs in tumors are briefly summarized and discussed. In addition, the participation of circRNAs in signal transduction pathways regulating gastrointestinal cancer cellular functions is highlighted.
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Affiliation(s)
- Xiaorui Zhao
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yue Wang
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Qiongfang Yu
- Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Pei Yu
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Qiaoyu Zheng
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xue Yang
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Dian Gao
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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