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Mahmoodi Chalbatani G, Gharagouzloo E, Malekraeisi MA, Azizi P, Ebrahimi A, Hamblin MR, Mahmoodzadeh H, Elkord E, Miri SR, Sanati MH, Panahi B. The integrative multi-omics approach identifies the novel competing endogenous RNA (ceRNA) network in colorectal cancer. Sci Rep 2023; 13:19454. [PMID: 37945594 PMCID: PMC10636147 DOI: 10.1038/s41598-023-46620-z] [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: 08/04/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023] Open
Abstract
Circular RNAs (circRNA) are known to function as competing endogenous RNA (ceRNA) in various cancers by regulating microRNAs (miRNA). However, in colorectal cancer (CRC), the precise pathological role of circ000240/miRNA/mRNA remains indeterminate. The expression level of hsa_circ_000240 was evaluated using qRT-PCR in matching pairs of CRC tumor and adjacent normal tissue samples in our laboratory. Then, to determine whether hsa_circ_000240 acted as a ceRNA in CRC, the linked miRNAs and gene targets were retrieved. Topological analysis of candidate genes using a network approach identified the most critical hub genes and subnetworks related to CRC disease. Microarray and bulk RNA sequencing analyses were utilized to comprehensively evaluate the expression levels of both miRNA and mRNA in CRC. Single-cell RNA-seq analysis was also used to evaluate the significant overall survival (OS) genes at the cellular level. ATAC-seq data provided insights into candidate genes' accessible chromatin regions. The research uncovered a considerable upregulation of hsa_circ_000240 in CRC tissues. Three miRNAs interacted with the target circRNA. One thousand six hundred eighty intersected genes regulated by three miRNAs were further identified, and the relevant functionality of identified neighbor genes highlighted their relevance to cancer. The topological analysis of the constructed network has identified 33 hub genes with notably high expression in CRC. Among these genes, eight, including CHEK1, CDC6, FANCI, GINS2, MAD2L1, ORC1, RACGAP1, and SMC4, have demonstrated a significant impact on overall survival. The utilization of single-cell RNA sequencing unequivocally corroborated the augmented expression levels of CDC6 and ORC1 in individuals with CRC, alongside their noteworthy connection with the infiltration of immune cells. ATAC-seq analyses revealed altered accessibility regions in Chr2, 4, and 12 for CDC6 and ORC1 high-expression. Correlation analysis of CDC6 and ORC1 further highlighted the association of candidate gene expression with exhaustion markers such as CTLA4, CD247, TIGIT, and CD244. The candidate genes exhibit a positive correlation with chromatin remodeling and histone acetylation. These epigenetic modifications play a significant role in influencing the cancer progression following expression of CDC6 and ORC1 in CRC. Additionally, results showed that the methylation rate of the promoter region of CDC6 was elevated in CRC disease, confirming the functional importance of CDC6 and their interaction with hsa_circ_000240 and associated ceRNA in CRC. In conclusion, this study highlights hsa_circ_000240's role as a ceRNA in CRC. It opens new avenues for further dissection of CDC6, ORC1, and underlying novel epigenetics and immunotherapy targets for CRC therapy.
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Affiliation(s)
| | - Elahe Gharagouzloo
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Science, Tehran, Iran
- Division of Cellular and Molecular Biology, Department of Biology, Nour Danesh Institute of Higher Education, Meymeh, Isfahan, Iran
| | | | - Paniz Azizi
- Psychological and Brain Science Departments, Program in Neuroscience, Indiana University, Bloomington, IN, USA
| | - Amirabbas Ebrahimi
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Science, Tehran, Iran
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, 40 Blossom Street, Boston, MA, 02114, USA
| | - Habibollah Mahmoodzadeh
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Science, Tehran, Iran
| | - Eyad Elkord
- Department of Applied Biology, College of Science, University of Sharjah, Sharjah, United Arab Emirates.
- Biomedical Research Center, School of Science, Engineering and Environment, University of Salford, Manchester, M5 4WT, UK.
| | - Seyed Rohollah Miri
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Science, Tehran, Iran.
| | - Mohammad Hossein Sanati
- Division of Cellular and Molecular Biology, Department of Biology, Nour Danesh Institute of Higher Education, Meymeh, Isfahan, Iran.
- Medical Genetics Department, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran.
| | - Bahman Panahi
- Department of Genomics, Branch for Northwest and West Region, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran
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Villegas-Mirón P, Gallego A, Bertranpetit J, Laayouni H, Espinosa-Parrilla Y. Signatures of genetic variation in human microRNAs point to processes of positive selection and population-specific disease risks. Hum Genet 2022; 141:1673-1693. [PMID: 35249174 PMCID: PMC9522702 DOI: 10.1007/s00439-021-02423-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 12/19/2021] [Indexed: 12/11/2022]
Abstract
The occurrence of natural variation in human microRNAs has been the focus of numerous studies during the last 20 years. Most of them have been focused on the role of specific mutations in disease, while a minor proportion seek to analyse microRNA diversity in the genomes of human populations. We analyse the latest human microRNA annotations in the light of the most updated catalogue of genetic variation provided by the 1000 Genomes Project. By means of the in silico analysis of microRNA genetic variation we show that the level of evolutionary constraint of these sequences is governed by the interplay of different factors, like their evolutionary age or genomic location. The role of mutations in the shaping of microRNA-driven regulatory interactions is emphasized with the acknowledgement that, while the whole microRNA sequence is highly conserved, the seed region shows a pattern of higher genetic diversity that appears to be caused by the dramatic frequency shifts of a fraction of human microRNAs. We highlight the participation of these microRNAs in population-specific processes by identifying that not only the seed, but also the loop, are particularly differentiated regions among human populations. The quantitative computational comparison of signatures of population differentiation showed that candidate microRNAs with the largest differences are enriched in variants implicated in gene expression levels (eQTLs), selective sweeps and pathological processes. We explore the implication of these evolutionary-driven microRNAs and their SNPs in human diseases, such as different types of cancer, and discuss their role in population-specific disease risk.
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Affiliation(s)
- Pablo Villegas-Mirón
- Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, Barcelona, Catalonia, Spain
| | - Alicia Gallego
- Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Madrid, Spain
| | - Jaume Bertranpetit
- Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, Barcelona, Catalonia, Spain
| | - Hafid Laayouni
- Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, Barcelona, Catalonia, Spain.
- Bioinformatics Studies, ESCI-UPF, Pg. Pujades 1, 08003, Barcelona, Spain.
| | - Yolanda Espinosa-Parrilla
- Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile.
- Laboratorio de Medicina Molecular-LMM, Centro Asistencial, Docente Y de Investigación-CADI, Universidad de Magallanes, Punta Arenas, Chile.
- Interuniversity Center on Healthy Aging, Punta Arenas, Chile.
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3
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Asadi MR, Moslehian MS, Sabaie H, Sharifi-Bonab M, Hakimi P, Hussen BM, Taheri M, Rakhshan A, Rezazadeh M. CircRNA-Associated CeRNAs Regulatory Axes in Retinoblastoma: A Systematic Scoping Review. Front Oncol 2022; 12:910470. [PMID: 35865469 PMCID: PMC9294360 DOI: 10.3389/fonc.2022.910470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/10/2022] [Indexed: 12/04/2022] Open
Abstract
Retinoblastoma (RB) is one of the most common childhood cancers caused by RB gene mutations (tumor suppressor gene in various patients). A better understanding of molecular pathways and the development of new diagnostic approaches may lead to better treatment for RB patients. The number of studies on ceRNA axes is increasing, emphasizing the significance of these axes in RB. Circular RNAs (circRNAs) play a vital role in competing endogenous RNA (ceRNA) regulatory axes by sponging microRNAs and regulating gene expression. Because of the broadness of ceRNA interaction networks, they may assist in investigating treatment targets in RB. This study conducted a systematic scoping review to evaluate verified loops of ceRNA in RB, focusing on the ceRNA axis and its relationship to circRNAs. This scoping review was carried out using a six-step strategy and the Prisma guideline, and it involved systematically searching the publications of seven databases. Out of 363 records, sixteen articles were entirely consistent with the defined inclusion criteria and were summarized in the relevant table. The majority of the studies focused on the circRNAs circ_0000527, circ_0000034, and circTET1, with approximately two-fifths of the studies focusing on a single circRNA. Understanding the many features of this regulatory structure may help elucidate RB’s unknown causative factors and provide novel molecular potential therapeutic targets and medical fields.
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Affiliation(s)
- Mohammad Reza Asadi
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Marziyeh Sadat Moslehian
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hani Sabaie
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mirmohsen Sharifi-Bonab
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parvin Hakimi
- Woman’s Reproductive Health Research Center, Tabriz University of medical sciences, Tabriz, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
- Center of Research and Strategic Studies, Lebanese French University, Erbil, Iraq
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- *Correspondence: Mohammad Taheri, ; Azadeh Rakhshan, ; Maryam Rezazadeh,
| | - Azadeh Rakhshan
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Mohammad Taheri, ; Azadeh Rakhshan, ; Maryam Rezazadeh,
| | - Maryam Rezazadeh
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
- Woman’s Reproductive Health Research Center, Tabriz University of medical sciences, Tabriz, Iran
- *Correspondence: Mohammad Taheri, ; Azadeh Rakhshan, ; Maryam Rezazadeh,
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Circ_0001955 Acts as a miR-646 Sponge to Promote the Proliferation, Metastasis and Angiogenesis of Hepatocellular Carcinoma. Dig Dis Sci 2022; 67:2257-2268. [PMID: 34021822 DOI: 10.1007/s10620-021-07053-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/11/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND Circular RNA (circRNA) exerts a crucial role in the progression of many cancers, including hepatocellular carcinoma (HCC). However, the function of circ_0001955 in HCC progression has been poorly studied. AIMS Elucidating the role and molecular mechanism of circ_0001955 in HCC progression. METHODS Quantitative real-time PCR was employed to detect the expression of circ_0001955 and miR-646. Cell counting kit 8 assay, Ethynyl-2-deoxyuridine assay, flow cytometry, transwell assay, and tube formation assay were conducted to measure cell proliferation, metastasis, angiogenesis and apoptosis. Dual-luciferase reporter assay and biotin-labeled RNA pull-down assay were performed to analyze the interactions among circ_0001955, miR-646 and frizzled class receptor 4 (FZD4). Moreover, animal experiments were performed to examine the influence of circ_0001955 on HCC tumor growth in vivo. RESULTS Circ_0001955 was a highly expressed circRNA in HCC tissues and cells. Circ_0001955 knockdown inhibited the proliferation, metastasis, angiogenesis, and enhanced the apoptosis of HCC cells. Meanwhile, miR-646 could be sponged by circ_0001955, and its inhibitor could reverse the negative regulation of circ_0001955 knockdown on HCC progression. Further, FZD4 was a target of miR-646, and its overexpression could invert the inhibition effect of miR-646 mimic on HCC progression. Besides, our results also indicated that circ_0001955 promoted FZD4 expression by sponging miR-646. Animal experiment results showed that circ_0001955 silencing restrained HCC tumor growth in vivo. CONCLUSION Our findings suggested that circ_0001955 might play a positive role in HCC progression via regulating the miR-646/FZD4 axis, indicating that circ_0001955 might be a potential therapeutic target for HCC.
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Amuti A, Liu D, Maimaiti A, Yu Y, Yasen Y, Ma H, Li R, Deng S, Pang F, Tian Y. Doxorubicin inhibits osteosarcoma progression by regulating circ_0000006/miR-646/ BDNF axis. J Orthop Surg Res 2021; 16:645. [PMID: 34717683 PMCID: PMC8557021 DOI: 10.1186/s13018-021-02782-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 10/06/2021] [Indexed: 01/02/2023] Open
Abstract
Background Osteosarcoma (OS) is the most common aggressive bone tumor in children and teenagers. Doxorubicin (DOX) is a chemotherapeutic drug for OS. This study aims to reveal the effects and underneath mechanism of DOX treatment in OS progression. Methods The expression of circular_0000006 (circ_0000006), microRNA-646 (miR-646) and brain-derived neurotrophic factor (BDNF) was detected by quantitative real-time polymerase chain reaction (qRT-PCR). BDNF protein expression was determined by western blot. Cell proliferation was illustrated by cell counting kit-8 (CCK-8) and cell colony formation assays. Cell migration and invasion were revealed by transwell migration and wound-healing assays and transwell invasion assay, respectively. Cell apoptosis was demonstrated by flow cytometry analysis. The binding relationship of miR-646 and circ_0000006 or BDNF was predicted by circRNA interactome and targetscan online database, respectively, and verified by dual-luciferase reporter assay. The effects of circ_0000006 knockdown on tumor growth in vivo were manifested by in vivo tumor formation assay. Results Circ_0000006 expression and the mRNA and protein levels of BDNF were dramatically upregulated, and miR-646 expression was effectively downregulated in OS tissues or cells compared with control groups. Circ_0000006 expression and BDNF protein expression were lower, and miR-646 expression was higher in DOX treatment groups than in control groups in OS cells. Circ_0000006 knockdown repressed cell proliferation, migration and invasion, whereas promoted cell apoptosis under DOX treatment in OS cells; however, these effects were attenuated by miR-646 inhibitor. Additionally, circ_0000006 sponged miR-646 to bind to BDNF. Circ_0000006 silencing suppressed tumor growth in vivo. Conclusion Circ_0000006 knockdown promoted DOX-mediated effects on OS development by miR-646/BDNF pathway, which provided a theoretical basis in treating OS with DOX.
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Affiliation(s)
- Abulimiti Amuti
- Department of Orthopaedics, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Dehu Liu
- Department of Osteology, Tai'an Traditional Chinese Medicine Hospital, Taian, Shandong, China
| | - Ayiguli Maimaiti
- Department of Orthopaedics, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Yao Yu
- Six Subjects of Hand Surgery, Affiliated Central Hospital of Shenyang Medical College, Shenyang, Liaoning, China
| | - Yalikun Yasen
- Department of Orthopaedics, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Haoguang Ma
- Department of Surgery, Hot Spring Sanatorium of Linyi, Linyi Hedong Central Hospital, Linyi, Shandong, China
| | - Rui Li
- Department of Joint Surgery, The Fourth Hospital of Baotou, Baotou City, Mongolia, China
| | - Shurong Deng
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
| | - Fei Pang
- Department of Orthopaedics, Shaoxing People's Hospital, No. 568 North Zhongxing Road, Yuecheng District, Shaoxing City, 312000, Zhejiang Province, China.
| | - Youliang Tian
- Department of Rehabilitation Medicine and Physiotherapy, PLA Strategic Support Force Characteristic Medical Center, No. 9 Anxiang North Lane, Chaoyang District, , Beijing, 100101, China.
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Zhang W, Li X, Zhang W, Lu Y, Lin W, Yang L, Zhang Z, Li X. The LncRNA CASC11 Promotes Colorectal Cancer Cell Proliferation and Migration by Adsorbing miR-646 and miR-381-3p to Upregulate Their Target RAB11FIP2. Front Oncol 2021; 11:657650. [PMID: 33937069 PMCID: PMC8084185 DOI: 10.3389/fonc.2021.657650] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/25/2021] [Indexed: 12/24/2022] Open
Abstract
Background We previously reported that the long non-coding RNA (lncRNA) CASC11 promotes colorectal cancer (CRC) progression as an oncogene by binding to HNRNPK. However, it remains unknown whether CASC11 can act as a competitive endogenous RNA (ceRNA) in CRC. In this study, we focused on the role of CASC11 as a ceRNA in CRC by regulating miR-646 and miR-381-3p targeting of RAB11FIP2. Methods We identified the target microRNAs (miRNAs) of CASC11 and the target genes of miR-646 and miR-381-3p using bioinformatic methods. A dual-luciferase reporter assay was performed to validate the target relationship. Quantitative real-time PCR (qRT-PCR), western blotting (WB), and immunohistochemistry (IHC) were used to measure the RNA and protein expression levels. Rescue experiments in vitro and in vivo were performed to investigate the influence of the CASC11/miR-646 and miR-381-3p/RAB11FIP2 axis on CRC progression. Results We found that CASC11 binds to miR-646 and miR-381-3p in the cytoplasm of CRC cells. Moreover, miR-646 and miR-381-3p inhibitors reversed the suppressive effect of CASC11 silencing on CRC growth and metastasis in vitro and in vivo. We further confirmed that RAB11FIP2 is a mutual target of miR-646 and miR-381-3p. The expression levels of CASC11 and RAB11FIP2 in CRC were positively correlated and reciprocally regulated. Further study showed that CASC11 played an important role in regulating PI3K/AKT pathway by miR-646 and miR-381-3p/RAB11FIP2 axis. Conclusion Our study showed that CASC11 promotes the progression of CRC as a ceRNA by sponging miR-646 and miR-381-3p. Thus, CASC11 is a potential biomarker and a therapeutic target of CRC.
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Affiliation(s)
- Wei Zhang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Pathology, The First Affiliated Hospital (Yijishan Hospital) of Wannan Medical College, Wuhu, China
| | - Xiaomin Li
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Wenjuan Zhang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yanxia Lu
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Weihao Lin
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Lawei Yang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zheying Zhang
- Department of Pathology, Xinxiang Medical University, Xinxiang, China
| | - Xuenong Li
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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Qu J, Yang J, Chen M, Wei R, Tian J. CircFLNA Acts as a Sponge of miR-646 to Facilitate the Proliferation, Metastasis, Glycolysis, and Apoptosis Inhibition of Gastric Cancer by Targeting PFKFB2. Cancer Manag Res 2020; 12:8093-8103. [PMID: 32982406 PMCID: PMC7490063 DOI: 10.2147/cmar.s264674] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/08/2020] [Indexed: 12/12/2022] Open
Abstract
Background Many studies have confirmed that circular (circRNA) is involved in the development of gastric cancer (GC). However, the role of circFLNA in the progression of GC remains unclear. Methods Quantitative real-time PCR (qRT-PCR) was used to measure the relative expression of circFLNA, microRNA (miR)-646 and 6-phosphofructo-2-kinase/fructose-2, 6-biphosphatase 2 (PFKFB2). Cell counting kit 8 (CCK8) assay, transwell assay and flow cytometry were performed to determine the proliferation, migration, invasion and apoptosis of cells, respectively. GC tumor xenograft models were built to confirm the function of circFLNA silencing on GC tumor growth in vivo. Furthermore, the lactate production, glucose consumption, ATP level and glucose uptake were detected to assess the glycolysis of cells. Then, the interaction between miR-646 and circFLNA or PFKFB2 was confirmed using dual-luciferase reporter assay. RNA immunoprecipitation (RIP) assay was used to verify the interaction between miR-646 and circFLNA further. In addition, Western blot (WB) analysis was employed to detect the relative protein expression of PFKFB2. Results Our results found that circFLNA was upregulated in GC tissues and cells. Silencing of circFLNA could suppress the proliferation, migration, invasion, glycolysis, and enhance the apoptosis of GC cells. Also, circFLNA knockdown reduced GC tumor volume and weight in vivo. Further experiments revealed that circFLNA could sponge miR-646, and miR-646 could target PFKFB2. The rescue experiments indicated that miR-646 inhibitor could reverse the suppressive effect of circFLNA silencing on GC progression, and PFKFB2 overexpression also could invert the inhibition effect of miR-646 on GC progression. Conclusion Our data concluded that circFLNA played a pro-cancer role in GC, which suggested that circFLNA might be a potential biomarker for GC treatment.
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Affiliation(s)
- Juan Qu
- Department of Gastroenterology, Tianjin Nankai Hospital, Tianjin, People's Republic of China
| | - Jizhi Yang
- Department of Traditional Chinese Medicine, Chen Tangzhuang Community Health Service Center, Hexi District, Tianjin, People's Republic of China
| | - Ming Chen
- Department of Gastroenterology, Tianjin Nankai Hospital, Tianjin, People's Republic of China
| | - Rongna Wei
- Department of Gastroenterology, Tianjin Nankai Hospital, Tianjin, People's Republic of China
| | - Jingjing Tian
- Department of Gastroenterology, Tianjin Nankai Hospital, Tianjin, People's Republic of China
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Zhang L, Wu J, Li Y, Jiang Y, Wang L, Chen Y, Lv Y, Zou Y, Ding X. Circ_0000527 promotes the progression of retinoblastoma by regulating miR-646/LRP6 axis. Cancer Cell Int 2020; 20:301. [PMID: 32669977 PMCID: PMC7350616 DOI: 10.1186/s12935-020-01396-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 07/01/2020] [Indexed: 02/08/2023] Open
Abstract
Background Researches validate that circular RNAs (circRNAs) are dysregulated in a variety of malignancies and play an important role in regulating the malignant phenotype of tumor cells. Nevertheless, the role of circ_0000527 in retinoblastoma (RB) and its regulatory mechanisms remain largely unknown. Methods Real-time PCR (RT-PCR) was used to detect circ_0000527 and miR-646 expression in RB tissues and cells. The LRP6 expression in RB cells was detected by Western blot. The relationship between circ_0000527 expression and the clinicopathological parameters of RB patients was analyzed. Cell proliferation, apoptosis and metastasis were monitored by cell counting kit-8 (CCK-8), flow cytometry, and Transwell assay. The dual-luciferase reporter gene assay and RIP assay were employed to verify the targeting relationship between circ_0000527 and miR-646, miR-646 and LRP6. Results Circ_0000527 was highly expressed in both RB and RB cell lines, whose high expression level and degree of differentiation were significantly correlated with the increase in cTNM staging level. Overexpression of circ_0000527 contributed to RB cell proliferation, migration, invasion and suppressed cell apoptosis, while knocking down circ_0000527 inhibited the above malignant biological behavior. The underlying mechanism suggested that functioning as a endogenous competitive RNA, circ_0000527 directly targeted miR-646 and positively regulated LRP6 expression. Conclusion Circ_0000527 enhances the proliferation and metastasis of RB cells by modulating the miR-646/LRP6 axis.
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Affiliation(s)
- Li Zhang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Jie Wu
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Yujun Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Yanxia Jiang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Lili Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Yunqing Chen
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Yalin Lv
- Department of Dermatology, The Affiliated Hospital of Qingdao University, No 16, Jiangsu Road, South District, Qingdao, 266003 Shandong China
| | - Yuwei Zou
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
| | - Xiaoyan Ding
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, 266003 Shandong China
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9
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Liu Y, Chen S, Zong ZH, Guan X, Zhao Y. CircRNA WHSC1 targets the miR-646/NPM1 pathway to promote the development of endometrial cancer. J Cell Mol Med 2020; 24:6898-6907. [PMID: 32378344 PMCID: PMC7299690 DOI: 10.1111/jcmm.15346] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/25/2019] [Accepted: 04/12/2020] [Indexed: 12/16/2022] Open
Abstract
Circular RNAs (circRNAs) play important roles in human cancer progression. Their high stability and tissue specificity make circRNAs important molecular targets for clinical diagnosis, treatment and prognosis. However, the functions and molecular mechanisms of circRNA WHSC1 in endometrial cancer are unknown. CircWHSC1 expression in normal endometrial and endometrial cancer tissues was detected using PCR. Overexpression or knockdown of circWHSC1 in endometrial cancer cell lines HEC‐1B or Ishikawa, respectively, cell function experiments were used to detect the impact of circWHSC1 on endometrial cancer cells. A nude mouse xenograft model was used to detect changes in tumorigenesis of HEC‐1B cells after circWHSC1 overexpression. Bioinformatics and dual luciferase reporter gene technology were used to predict and validate the sponging ability of circWHSC1 on microRNAs. Gene expression changes were detected by using Western blotting. CircWHSC1 expression was increased in endometrial cancer tissues. CircWHSC1 overexpression promoted the proliferation, migration and invasion of endometrial cancer cells and decreased apoptosis. CircWHSC1 knockdown had the opposite effect. CircWHSC1 overexpressed nude mice showed increased tumorigenicity. Bioinformatics predicted that circWHSC1 binds to miR‐646, which was confirmed using luciferase reporter gene assays. High expression of miR‐646 could reverse the effect of circWHSC1 on endometrial cancer cells. Western blotting showed increased or decreased levels of nucleophosmin 1 (NPM1), an miR‐646 downstream target, after circWHSC1 overexpression or knockdown, respectively. CircWHSC1 promotes endometrial cancer development through sponging miR‐646 and targeting NPM1.
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Affiliation(s)
- Yao Liu
- Department of Gynecologic Oncology Research Office, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institute in Guangdong Province, Guangzhou, China
| | - Shuo Chen
- Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhi-Hong Zong
- Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xue Guan
- Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yang Zhao
- Department of Gynecologic Oncology Research Office, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institute in Guangdong Province, Guangzhou, China
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Zhang Y, Wang F, Wang L, Zhang Q. MiR-363 suppresses cell migration, invasion, and epithelial-mesenchymal transition of osteosarcoma by binding to NOB1. World J Surg Oncol 2020; 18:83. [PMID: 32357945 PMCID: PMC7195799 DOI: 10.1186/s12957-020-01859-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/20/2020] [Indexed: 12/11/2022] Open
Abstract
Background Osteosarcoma (OS) is a primary malignant bone tumor with a high rate of metastasis and a short 5-year survival rate. MiR-363 was downregulated in a variety of tumors and played a role in suppressing tumors. However, the roles of miR-363 in osteosarcoma remain unknown; thus, the purpose of this study was to explore the functions of miR-363 in osteosarcoma. Methods CCK-8 and transwell assays were performed to evaluate the proliferation, migration, and invasion abilities of MG63 cells. The epithelial-mesenchymal transition (EMT) and apoptosis-associated proteins were measured by using Western blot assay. Luciferase reporter assay was utilized to verify whether miR-363 directly bound to the 3′-UTR of NOB1 mRNA. Results MiR-363 was downregulated while NOB1 was upregulated in osteosarcoma clinical tissue specimens and cell lines as compared with the adjacent normal tissue specimens and normal cell line. The miR-363 is reversely correlated with the expression of NOB1 in osteosarcoma tissues. Overexpression of miR-363 suppressed the ability of cell migration, invasion, and EMT, whereas low expression of miR-363 promoted this ability. In addition, miR-363 inhibited osteosarcoma proliferation both in vitro and in vivo and inhibited the apoptosis in MG63 cells. Interference of NOB1 could inhibit the migration, invasion, and EMT of osteosarcoma cell line MG63. NOB1 was verified to be a direct target of miR-363 and its expression was mediated by miR-363. Re-expression of NOB1 could partially reverse the inhibitory effect of miR-363 on cell migration and invasion. In addition, low expression of miR-363 or overexpression of NOB1 predicted poor prognosis of osteosarcoma patients. Conclusion MiR-363 inhibited osteosarcoma the proliferation, migration, invasion, and EMT and induced the apoptosis by directly targeting NOB1 in MG63 cells. The newly identified miR-363/NOB1 axis provides novel insights into the pathogenesis of osteosarcoma.
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Affiliation(s)
- Yongtao Zhang
- Department of Orthopedics and Traumatology, Zibo Hospital of Integrated Traditional Chinese and Western Medicine, Zibo, 255000, Shandong Province, China
| | - Fang Wang
- CT Imaging Department of Zibo Central Hospital, Zibo, 255000, Shandong Province, China
| | - Lina Wang
- Laboratory of the Fifth People's Hospital of Zibo, Shandong Province, Zibo, 255000, China
| | - Quanbin Zhang
- Department of Orthopaedic Trauma, Zibo Central Hospital, No. 54 Gongqingtuan Road, Zibo, 255000, Shandong Province, China.
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Cokarić Brdovčak M, Zubković A, Jurak I. Herpes Simplex Virus 1 Deregulation of Host MicroRNAs. Noncoding RNA 2018; 4:ncrna4040036. [PMID: 30477082 PMCID: PMC6316616 DOI: 10.3390/ncrna4040036] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/15/2018] [Accepted: 11/19/2018] [Indexed: 02/06/2023] Open
Abstract
Viruses utilize microRNAs (miRNAs) in a vast variety of possible interactions and mechanisms, apparently far beyond the classical understanding of gene repression in humans. Likewise, herpes simplex virus 1 (HSV-1) expresses numerous miRNAs and deregulates the expression of host miRNAs. Several HSV-1 miRNAs are abundantly expressed in latency, some of which are encoded antisense to transcripts of important productive infection genes, indicating their roles in repressing the productive cycle and/or in maintenance/reactivation from latency. In addition, HSV-1 also exploits host miRNAs to advance its replication or repress its genes to facilitate latency. Here, we discuss what is known about the functional interplay between HSV-1 and the host miRNA machinery, potential targets, and the molecular mechanisms leading to an efficient virus replication and spread.
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Affiliation(s)
- Maja Cokarić Brdovčak
- Laboratory for Molecular Virology, Department of Biotechnology, University of Rijeka, R. Matejčić 2, HR-51000 Rijeka, Croatia.
| | - Andreja Zubković
- Laboratory for Molecular Virology, Department of Biotechnology, University of Rijeka, R. Matejčić 2, HR-51000 Rijeka, Croatia.
| | - Igor Jurak
- Laboratory for Molecular Virology, Department of Biotechnology, University of Rijeka, R. Matejčić 2, HR-51000 Rijeka, Croatia.
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Nikolouzakis TK, Vassilopoulou L, Fragkiadaki P, Sapsakos TM, Papadakis GZ, Spandidos DA, Tsatsakis AM, Tsiaoussis J. Improving diagnosis, prognosis and prediction by using biomarkers in CRC patients (Review). Oncol Rep 2018; 39:2455-2472. [PMID: 29565457 PMCID: PMC5983921 DOI: 10.3892/or.2018.6330] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 03/21/2018] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer (CRC) is among the most common cancers. In fact, it is placed in the third place among the most diagnosed cancer in men, after lung and prostate cancer, and in the second one for the most diagnosed cancer in women, following breast cancer. Moreover, its high mortality rates classifies it among the leading causes of cancer‑related death worldwide. Thus, in order to help clinicians to optimize their practice, it is crucial to introduce more effective tools that will improve not only early diagnosis, but also prediction of the most likely progression of the disease and response to chemotherapy. In that way, they will be able to decrease both morbidity and mortality of their patients. In accordance with that, colon cancer research has described numerous biomarkers for diagnostic, prognostic and predictive purposes that either alone or as part of a panel would help improve patient's clinical management. This review aims to describe the most accepted biomarkers among those proposed for use in CRC divided based on the clinical specimen that is examined (tissue, faeces or blood) along with their restrictions. Lastly, new insight in CRC monitoring will be discussed presenting promising emerging biomarkers (telomerase activity, telomere length and micronuclei frequency).
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Affiliation(s)
| | - Loukia Vassilopoulou
- Laboratory of Forensic Sciences and Toxicology, Medical School, University of Crete, 71409 Heraklion, Crete, Greece
| | - Persefoni Fragkiadaki
- Laboratory of Forensic Sciences and Toxicology, Medical School, University of Crete, 71409 Heraklion, Crete, Greece
| | - Theodoros Mariolis Sapsakos
- Laboratory of Anatomy and Histology, Nursing School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Georgios Z. Papadakis
- Foundation for Research and Technology Hellas (FORTH), Institute of Computer Sciences (ICS), Computational Biomedicine Laboratory (CBML), 71003 Heraklion, Crete, Greece
| | - Demetrios A. Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Aristides M. Tsatsakis
- Laboratory of Forensic Sciences and Toxicology, Medical School, University of Crete, 71409 Heraklion, Crete, Greece
| | - John Tsiaoussis
- Laboratory of Anatomy-Histology-Embryology, Medical School, University of Crete, 71110 Heraklion, Greece
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