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Tan H, Guo M, Chen J, Wang J, Yu G. HetFCM: functional co-module discovery by heterogeneous network co-clustering. Nucleic Acids Res 2024; 52:e16. [PMID: 38088228 PMCID: PMC10853805 DOI: 10.1093/nar/gkad1174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/31/2023] [Accepted: 11/23/2023] [Indexed: 02/10/2024] Open
Abstract
Functional molecular module (i.e., gene-miRNA co-modules and gene-miRNA-lncRNA triple-layer modules) analysis can dissect complex regulations underlying etiology or phenotypes. However, current module detection methods lack an appropriate usage and effective model of multi-omics data and cross-layer regulations of heterogeneous molecules, causing the loss of critical genetic information and corrupting the detection performance. In this study, we propose a heterogeneous network co-clustering framework (HetFCM) to detect functional co-modules. HetFCM introduces an attributed heterogeneous network to jointly model interplays and multi-type attributes of different molecules, and applies multiple variational graph autoencoders on the network to generate cross-layer association matrices, then it performs adaptive weighted co-clustering on association matrices and attribute data to identify co-modules of heterogeneous molecules. Empirical study on Human and Maize datasets reveals that HetFCM can find out co-modules characterized with denser topology and more significant functions, which are associated with human breast cancer (subtypes) and maize phenotypes (i.e., lipid storage, drought tolerance and oil content). HetFCM is a useful tool to detect co-modules and can be applied to multi-layer functional modules, yielding novel insights for analyzing molecular mechanisms. We also developed a user-friendly module detection and analysis tool and shared it at http://www.sdu-idea.cn/FMDTool.
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Affiliation(s)
- Haojiang Tan
- School of Software, Shandong University, Jinan 250101, Shandong, China
- Joint SDU-NTU Centre for Artificial Intelligence Research, Shandong University, Jinan 250101, Shandong, China
| | - Maozu Guo
- College of Electrical and Information Engineering, Beijing Uni. of Civil Eng. and Arch., Beijing 100044, China
| | - Jian Chen
- College of Agronomy & Biotechnolog, China Agricultural University, Beijing 100193, China
| | - Jun Wang
- Joint SDU-NTU Centre for Artificial Intelligence Research, Shandong University, Jinan 250101, Shandong, China
| | - Guoxian Yu
- School of Software, Shandong University, Jinan 250101, Shandong, China
- Joint SDU-NTU Centre for Artificial Intelligence Research, Shandong University, Jinan 250101, Shandong, China
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Luo Y, Wang H, Wang L, Wu W, Zhao J, Li X, Xiong R, Ding X, Yuan D, Yuan C. LncRNA MEG3: Targeting the Molecular Mechanisms and Pathogenic causes of Metabolic Diseases. Curr Med Chem 2024; 31:6140-6153. [PMID: 37855346 DOI: 10.2174/0109298673268051231009075027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/27/2023] [Accepted: 09/08/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND Non-coding RNA is a type of RNA that does not encode proteins, distributed among rRNA, tRNA, snRNA, snoRNA, microRNA and other RNAs with identified functions, where the Long non-coding RNA (lncRNA) displays a nucleotide length over 200. LncRNAs enable multiple biological processes in the human body, including cancer cell invasion and metastasis, apoptosis, cell autophagy, inflammation, etc. Recently, a growing body of studies has demonstrated the association of lncRNAs with obesity and obesity-induced insulin resistance and NAFLD, where MEG3 is related to glucose metabolism, such as insulin resistance. In addition, MEG3 has been demonstrated in the pathological processes of various cancers, such as mediating inflammation, cardiovascular disease, liver disease and other metabolic diseases. OBJECTIVE To explore the regulatory role of lncRNA MEG3 in metabolic diseases. It provides new ideas for clinical treatment or experimental research. METHODS In this paper, in order to obtain enough data, we integrate and analyze the data in the PubMed database. RESULTS LncRNA MEG3 can regulate many metabolic diseases, such as insulin resistance, NAFLD, inflammation and so on. CONCLUSION LncRNA MEG3 has a regulatory role in a variety of metabolic diseases, which are currently difficult to be completely cured, and MEG3 is a potential target for the treatment of these diseases. Here, we review the role of lncRNA MEG3 in mechanisms of action and biological functions in human metabolic diseases.
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Affiliation(s)
- Yiyang Luo
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- College of Medicine and Health Science, China Three Gorges University, Yichang, 443002, China
| | - Hailin Wang
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- College of Medicine and Health Science, China Three Gorges University, Yichang, 443002, China
| | - Lijun Wang
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- Department of Biochemistry, College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
| | - Wei Wu
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- College of Medicine and Health Science, China Three Gorges University, Yichang, 443002, China
| | - Jiale Zhao
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- College of Medicine and Health Science, China Three Gorges University, Yichang, 443002, China
| | - Xueqing Li
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- College of Medicine and Health Science, China Three Gorges University, Yichang, 443002, China
| | - Ruisi Xiong
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- Department of Biochemistry, College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
| | - Xueliang Ding
- Department of Clinical Laboratory, Affiliated Renhe Hospital of China Three Gorges University, Yichang, 443002, China
| | - Ding Yuan
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- College of Medicine and Health Science, China Three Gorges University, Yichang, 443002, China
| | - Chengfu Yuan
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
- Department of Biochemistry, College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
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Yang K, Xiao Y, Zhong L, Zhang W, Wang P, Ren Y, Shi L. p53-regulated lncRNAs in cancers: from proliferation and metastasis to therapy. Cancer Gene Ther 2023; 30:1456-1470. [PMID: 37679529 DOI: 10.1038/s41417-023-00662-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 08/19/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
Long non-coding RNAs (lncRNAs) have been identified as master gene regulators through various mechanisms such as transcription, translation, protein modification and RNA-protein complexes. LncRNA dysregulation is frequently associated with a variety of biological functions and human diseases including cancer. The p53 network is a key tumor-suppressive mechanism that transcriptionally activates target genes to suppress cellular proliferation in human malignancies. Recent research indicates that lncRNAs play an important role in the p53 signaling pathway. In this review, we summarize the current knowledge of lncRNAs in p53-relevant functions and provide an overview of how these altered lncRNAs contribute to tumor initiation and progression. We also discuss the association between lncRNA and up- or downstream genes of p53. These findings imply that lncRNAs can help identify cellular vulnerabilities that may prove to be promising potential biomarkers and therapeutic targets for cancer treatment.
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Affiliation(s)
- Kaixin Yang
- RNA Oncology Group, School of Public Health, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Yinan Xiao
- RNA Oncology Group, School of Public Health, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Linghui Zhong
- RNA Oncology Group, School of Public Health, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Wenyang Zhang
- RNA Oncology Group, School of Public Health, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Peng Wang
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, 075131, People's Republic of China
| | - Yaru Ren
- RNA Oncology Group, School of Public Health, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Lei Shi
- RNA Oncology Group, School of Public Health, Lanzhou University, Lanzhou, 730000, People's Republic of China.
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Hussain MS, Majami AA, Ali H, Gupta G, Almalki WH, Alzarea SI, Kazmi I, Syed RU, Khalifa NE, Bin Break MK, Khan R, Altwaijry N, Sharma R. The complex role of MEG3: An emerging long non-coding RNA in breast cancer. Pathol Res Pract 2023; 251:154850. [PMID: 37839358 DOI: 10.1016/j.prp.2023.154850] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/24/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023]
Abstract
MEG3, a significant long non-coding RNA (lncRNA), substantially functions in diverse biological processes, particularly breast cancer (BC) development. Within the imprinting DLK-MEG3 region on human chromosomal region 14q32.3, MEG3 spans 35 kb and encompasses ten exons. It exerts regulatory effects through intricate interactions with miRNAs, proteins, and epigenetic modifications. MEG3's multifaceted function in BC is evident in gene expression modulation, osteogenic tissue differentiation, and involvement in bone-related conditions. Its role as a tumor suppressor is highlighted by its influence on miR-182 and miRNA-29 expression in BC. Additionally, MEG3 is implicated in acute myocardial infarction and endothelial cell function, emphasising cell-specific regulatory mechanisms. MEG3's impact on gene activity encompasses transcriptional and post-translational adjustments, including DNA methylation, histone modifications, and interactions with transcription factors. MEG3 dysregulation is linked to unfavourable outcomes and drug resistance. Notably, higher MEG3 expression is associated with enhanced survival in BC patients. Overcoming challenges such as unravelling context-specific interactions, understanding epigenetic control, and translating findings into clinical applications is imperative. Prospective endeavours involve elucidating underlying mechanisms, exploring epigenetic alterations, and advancing MEG3-based diagnostic and therapeutic approaches. A comprehensive investigation into broader signaling networks and rigorous clinical trials are pivotal. Rigorous validation through functional and molecular analyses will shed light on MEG3's intricate contribution to BC progression.
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Affiliation(s)
- Md Sadique Hussain
- School of Pharmaceutical Sciences, Jaipur National University, Jagatpura, 302017, Jaipur, Rajasthan, India
| | - Abdullah A Majami
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Haider Ali
- Department of Pharmacology, Kyrgyz State Medical College, Bishkek, Kyrgyzstan.
| | - Gaurav Gupta
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, India; School of Pharmacy, Graphic Era Hill University, Dehradun 248007, India; School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, 302017, Jaipur, India
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rahamat Unissa Syed
- Department of Pharmaceutics, College of Pharmacy, University of Hail, Hail 81442, Saudi Arabia; Medical and Diagnostic Research Centre, University of Hail, Hail 55473, Saudi Arabia
| | - Nasrin E Khalifa
- Department of Pharmaceutics, College of Pharmacy, University of Hail, Hail 81442, Saudi Arabia; Medical and Diagnostic Research Centre, University of Hail, Hail 55473, Saudi Arabia; Department of Pharmaceutics, Faculty of Pharmacy, University of Khartoum, 11115, Sudan
| | - Mohammed Khaled Bin Break
- Medical and Diagnostic Research Centre, University of Hail, Hail 55473, Saudi Arabia; Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail 81442, Saudi Arabia
| | - Ruqaiyah Khan
- Department of Basic Health Sciences, Deanship of Preparatory Year for the Health Colleges, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Najla Altwaijry
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint, Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Rahul Sharma
- School of Pharmaceutical Sciences, Jaipur National University, Jagatpura, 302017, Jaipur, Rajasthan, India
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Hussen BM, Hidayat HJ, Abdullah SR, Mohamadtahr S, Rasul MF, Samsami M, Taheri M. Role of long non-coding RNAs and TGF-β signaling in the regulation of breast cancer pathogenesis and therapeutic targets. Cytokine 2023; 170:156351. [PMID: 37657235 DOI: 10.1016/j.cyto.2023.156351] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/03/2023]
Abstract
The cytokine known as transforming growth factor (TGF) is essential for cell development, differentiation, and apoptosis in BC. TGF-β dysregulation can either promote or inhibit tumor development, and it is a key signaling pathway in BC spread. A recently identified family of ncRNAs known as lncRNAs has received a great deal of effort and is an important regulator of many cellular processes, including transcription of genes, chromatin remodeling, progression of the cell cycle, and posttranscriptional processing. Furthermore, both TGF-β signaling and lncRNAs serve as important early-stage biomarkers for BC diagnosis and prognosis and also play a significant role in BC drug resistance. According to recent studies, lncRNAs can regulate TGF-β by modulating its cofactors in BC. However, the particular functions of lncRNAs and the TGF-β pathway in controlling BC progression are not well understood yet. This review explores the lncRNAs' functional properties in BC as tumor suppressors or oncogenes in the regulation of genes, with a focus on dysregulated TGF-β signaling. Further, we emphasize the functional roles of lncRNAs and TGF-β pathway in the progression of BC to discover new treatment strategies and better comprehend the fundamental cellular pathways.
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Affiliation(s)
- Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq; Department of Biomedical Sciences, Cihan University-Erbil, Erbil, Kurdistan Region 44001, Iraq
| | - Hazha Jamal Hidayat
- Department of Biology, College of Education, Salahaddin University-Erbil, Kurdistan Region, Iraq
| | - Snur Rasool Abdullah
- Department of Medical Laboratory Science, College of Health Sciences, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | - Sayran Mohamadtahr
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq
| | - Mohammad Fatih Rasul
- Department of Pharmaceutical Basic Science, Faculty of Pharmacy, Tishk International University, Erbil, Kurdistan Region, Iraq
| | - Majid Samsami
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany; Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Tu T, Yuan Y, Liu X, Liang X, Yang X, Yang Y. Progress in investigating the relationship between Schlafen5 genes and malignant tumors. Front Oncol 2023; 13:1248825. [PMID: 37771431 PMCID: PMC10523568 DOI: 10.3389/fonc.2023.1248825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 08/23/2023] [Indexed: 09/30/2023] Open
Abstract
The Schlafen5(SLFN5)gene belongs to the third group of the Schlafen protein family. As a tumor suppressor gene, SLFN5 plays a pivotal role in inhibiting tumor growth, orchestrating cell cycle regulation, and modulating the extent of cancer cell infiltration and metastasis in various malignancies. However, the high expression of SLFN 5 in some tumors was positively correlated with lymph node metastasis, tumor stage, and tumor grade. This article endeavors to elucidate the reciprocal relationship between the SLFN5 gene and malignant tumors, thereby enhancing our comprehension of the intricate mechanisms underlying the SLFN5 gene and its implications for the progression, invasive potential, and metastatic behavior of malignant tumors. At the same time, this paper summarizes the basis of SLFN 5 as a new biomarker of tumor diagnosis and prognosis, and provides new ideas for the target treatment of tumor.
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Affiliation(s)
- Teng Tu
- School of Basic Medicine, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
| | - Ye Yuan
- Beidahuang Industry Group General Hospital, Harbin, China
| | - Xiaoxue Liu
- School of Basic Medicine, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
| | - Xin Liang
- Beidahuang Industry Group General Hospital, Harbin, China
| | - Xiaofan Yang
- The 1st Clinical Medical College, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
| | - Yue Yang
- School of Basic Medicine, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
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Li K, Gong Q, Xiang XD, Guo G, Liu J, Zhao L, Li J, Chen N, Li H, Zhang LJ, Zhou CY, Wang ZY, Zhuang L. HNRNPA2B1-mediated m 6A modification of lncRNA MEG3 facilitates tumorigenesis and metastasis of non-small cell lung cancer by regulating miR-21-5p/PTEN axis. J Transl Med 2023; 21:382. [PMID: 37308993 DOI: 10.1186/s12967-023-04190-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/08/2023] [Indexed: 06/14/2023] Open
Abstract
BACKGROUND Accumulating data indicate that N6-methyladenosine (m6A) RNA methylation and lncRNA deregulation act crucial roles in cancer progression. Heterogeneous nuclear ribonucleoprotein A2B1 (HNRNPA2B1) as an m6A "reader" has been reported to be an oncogene in multiple malignancies. We herein aimed to elucidate the role and underlying mechanism by which HNRNPA2B1-mediated m6A modification of lncRNAs contributes to non-small cell lung cancer (NSCLC). METHODS The expression levels of HNRNPA2B1 and their association with the clinicopathological characteristics and prognosis in NSCLC were determined by RT-qPCR, Western blot, immunohistochemistry and TCGA dataset. Then, the role of HNRNPA2B1 in NSCLC cells was assessed by in vitro functional experiments and in vivo tumorigenesis and lung metastasis models. HNRNPA2B1-mediated m6A modification of lncRNAs was screened by m6A-lncRNA epi-transcriptomic microarray and verified by methylated RNA immunoprecipitation (Me-RIP). The lncRNA MEG3-specific binding with miR-21-5p was evaluated by luciferase gene report and RIP assays. The effects of HNRNPA2B1 and (or) lncRNA MEG3 on miR-21-5p/PTEN/PI3K/AKT signaling were examined by RT-qPCR and Western blot analyses. RESULTS We found that upregulation of HNRNPA2B1 was associated with distant metastasis and poor survival, representing an independent prognostic factor in patients with NSCLC. Knockdown of HNRNPA2B1 impaired cell proliferation and metastasis in vitro and in vivo, whereas ectopic expression of HNRNPA2B1 possessed the opposite effects. Mechanical investigations revealed that lncRNA MEG3 was an m6A target of HNRNPA2B1 and inhibition of HNRNPA2B1 decreased MEG3 m6A levels but increased its mRNA levels. Furthermore, lncRNA MEG3 could act as a sponge of miR-21-5p to upregulate PTEN and inactivate PI3K/AKT signaling, leading to the suppression of cell proliferation and invasion. Low expression of lncRNA MEG3 or elevated expression of miR-21-5p indicated poor survival in patients with NSCLC. CONCLUSIONS Our findings uncover that HNRNPA2B1-mediated m6A modification of lncRNA MEG3 promotes tumorigenesis and metastasis of NSCLC cells by regulating miR-21-5p/PTEN axis and may provide a therapeutic target for NSCLC.
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Affiliation(s)
- Ke Li
- Department of Cancer Biotherapy Center, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan, China
| | - Quan Gong
- Department of Rehabilitation and Palliative Medicine, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Number 519 Kunzhou Road, Kunming, 650118, Yunnan, China
| | - Xu-Dong Xiang
- Department of Thoracic Surgery, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan, China
| | - Gang Guo
- Department of Thoracic Surgery, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan, China
| | - Jia Liu
- Laboratory Zoology Department, Kunming Medical University, Kunming, 650500, Yunnan, China
| | - Li Zhao
- Department of Anesthesiology, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan, China
| | - Jun Li
- Department of Rehabilitation and Palliative Medicine, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Number 519 Kunzhou Road, Kunming, 650118, Yunnan, China
| | - Nan Chen
- Department of Thoracic Surgery, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan, China
| | - Heng Li
- Department of Thoracic Surgery, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan, China
| | - Li-Juan Zhang
- Department of Rehabilitation and Palliative Medicine, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Number 519 Kunzhou Road, Kunming, 650118, Yunnan, China
| | - Chun-Yan Zhou
- Department of Rehabilitation and Palliative Medicine, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Number 519 Kunzhou Road, Kunming, 650118, Yunnan, China
| | - Zhi-Yong Wang
- Department of Rehabilitation and Palliative Medicine, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Number 519 Kunzhou Road, Kunming, 650118, Yunnan, China
| | - Li Zhuang
- Department of Rehabilitation and Palliative Medicine, Yunnan Cancer Hospital, the Third Affiliated Hospital of Kunming Medical University, Number 519 Kunzhou Road, Kunming, 650118, Yunnan, China.
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Yin Q, Ma H, Bamunuarachchi G, Zheng X, Ma Y. Long Non-Coding RNAs, Cell Cycle, and Human Breast Cancer. Hum Gene Ther 2023; 34:481-494. [PMID: 37243445 PMCID: PMC10398747 DOI: 10.1089/hum.2023.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 05/25/2023] [Indexed: 05/28/2023] Open
Abstract
The long non-coding RNAs (lncRNAs) constitute an important class of the human transcriptome. The discovery of lncRNAs provided one of many unexpected results of the post-genomic era and uncovered a huge number of previously ignored transcriptional events. In recent years, lncRNAs are known to be linked with human diseases, with particular focus on cancer. Growing evidence has indicated that dysregulation of lncRNAs in breast cancer (BC) is strongly associated with the occurrence, development, and progress. Increasing numbers of lncRNAs have been found to interact with cell cycle progression and tumorigenesis in BC. The lncRNAs can exert their effect as a tumor suppressor or oncogene and regulate tumor development through direct or indirect regulation of cancer-related modulators and signaling pathways. What is more, lncRNAs are excellent candidates for promising therapeutic targets in BC due to the features of high tissue and cell-type specific expression. However, the underlying mechanisms of lncRNAs in BC still remain largely undefined. Here, we concisely summarize and sort out the current understanding of research progress in relationships of the roles for lncRNA in regulating the cell cycle. We also summarize the evidence for aberrant lncRNA expression in BC, and the potential for lncRNA to improve BC therapy is also discussed. Together, lncRNAs can be considered as exciting therapeutic candidates whose expression can be altered to impede BC progression.
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Affiliation(s)
- Qinan Yin
- Precision Medicine Laboratory, College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Haodi Ma
- Precision Medicine Laboratory, College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Gayan Bamunuarachchi
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Xuewei Zheng
- Precision Medicine Laboratory, College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Yan Ma
- Spatial Navigation and Memory Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
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Bi H, Wang G, Li Z, Zhou L, Zhang M. MEG3 Regulates CSE-Induced Apoptosis by Regulating miR-421/DFFB Signal Axis. Int J Chron Obstruct Pulmon Dis 2023; 18:859-870. [PMID: 37215747 PMCID: PMC10198185 DOI: 10.2147/copd.s405566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 04/30/2023] [Indexed: 05/24/2023] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) is a common respiratory disease with irreversible and progressive obstruction of airflow. Currently, there are no clinically available treatments to prevent COPD progression. Apoptosis of human lung microvascular endothelial cells (HPMECs) and bronchial epithelial cells (HBECs) is often observed in COPD, but its pathogenesis has not been fully elucidated. LncRNA maternally expressed gene 3 (MEG3) is closely related to CSE-induced apoptosis, but the specific mechanism of MEG3 in COPD is still unknown. Methods In the present study, cigarette smoke extract (CSE) is used to treat HPMECs and HBECs. Flow cytometry assay is used to detect the apoptosis of these cells. The expression of MEG3 in CSE-treated HPMECs and HBECs is detected by qRT-PCR. LncBase v.2 is used to predict miRNAs binding to MEG3, and miR-421 is found to bind to MEG3. Dual luciferase report analysis and RNA immunoprecipitation experiment jointly clarified the binding relationship between MEG3 and miR-421. Results MiR-421 was downregulated in CSE-treated HPMECs/HBECs, and miR-421 overexpression mitigated CSE-induced apoptosis in these cells. Subsequently, DFFB was found to be directly targeted by miR-421. The overexpression of miR-421 dramatically reduced the expression level of DNA fragmentation factor subunit beta (DFFB). DFFB was found downregulated in CSE-treated HPMECs and HBECs. MEG3 contributed to the apoptosis of HPMECs and HBECs induced by CSE by regulating the miR-421/DFFB axis. Conclusion This study presents a new perspective on the diagnosis and treatment of COPD caused by CSE.
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Affiliation(s)
- Hui Bi
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, People’s Republic of China
| | - Gui Wang
- Department of Intensive Care Unit, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, People’s Republic of China
| | - Zhiying Li
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, People’s Republic of China
| | - Lin Zhou
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, People’s Republic of China
| | - Ming Zhang
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, People’s Republic of China
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Zhang L, Zhao F, Li W, Song G, Kasim V, Wu S. The Biological Roles and Molecular Mechanisms of Long Non-Coding RNA MEG3 in the Hallmarks of Cancer. Cancers (Basel) 2022; 14:cancers14246032. [PMID: 36551518 PMCID: PMC9775699 DOI: 10.3390/cancers14246032] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are critical regulators in various biological processes involved in the hallmarks of cancer. Maternally expressed gene 3 (MEG3) is lncRNA that regulates target genes through transcription, translation, post-translational modification, and epigenetic regulation. MEG3 has been known as a tumor suppressor, and its downregulation could be found in various cancers. Furthermore, clinical studies revealed that impaired MEG3 expression is associated with poor prognosis and drug resistance. MEG3 exerts its tumor suppressive effect by suppressing various cancer hallmarks and preventing cells from acquiring cancer-specific characteristics; as it could suppress tumor cells proliferation, invasion, metastasis, and angiogenesis; it also could promote tumor cell death and regulate tumor cell metabolic reprogramming. Hence, MEG3 is a potential prognostic marker, and overexpressing MEG3 might become a potential antitumor therapeutic strategy. Herein, we summarize recent knowledge regarding the role of MEG3 in regulating tumor hallmarks as well as the underlying molecular mechanisms. Furthermore, we also discuss the clinical importance of MEG3, as well as their potential in tumor prognosis and antitumor therapeutic strategies.
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Affiliation(s)
- Lei Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Fuqiang Zhao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Wenfang Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Guanbin Song
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Vivi Kasim
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing 400044, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing University, Chongqing 400030, China
- Correspondence: (V.K.); (S.W.); Tel.: +86-23-65112672 (V.K.); +86-23-65111632 (S.W.); Fax: +86-23-65111802 (V.K. & S.W.)
| | - Shourong Wu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing 400044, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing University, Chongqing 400030, China
- Correspondence: (V.K.); (S.W.); Tel.: +86-23-65112672 (V.K.); +86-23-65111632 (S.W.); Fax: +86-23-65111802 (V.K. & S.W.)
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11
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Xu J, Wang X, Zhu C, Wang K. A review of current evidence about lncRNA MEG3: A tumor suppressor in multiple cancers. Front Cell Dev Biol 2022; 10:997633. [PMID: 36544907 PMCID: PMC9760833 DOI: 10.3389/fcell.2022.997633] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
Long non-coding RNA (lncRNA) maternally expressed gene 3 (MEG3) is a lncRNA located at the DLK1-MEG3 site of human chromosome 14q32.3. The expression of MEG3 in various tumors is substantially lower than that in normal adjacent tissues, and deletion of MEG3 expression is involved in the occurrence of many tumors. The high expression of MEG3 could inhibit the occurrence and development of tumors through several mechanisms, which has become a research hotspot in recent years. As a member of tumor suppressor lncRNAs, MEG3 is expected to be a new target for tumor diagnosis and treatment. This review discusses the molecular mechanisms of MEG3 in different tumors and future challenges for the diagnosis and treatment of cancers through MEG3.
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Affiliation(s)
- Jie Xu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xia Wang
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chunming Zhu
- Department of Family Medicine, Shengjing Hospital of China Medical University, Shenyang, China,*Correspondence: Chunming Zhu, ; Kefeng Wang,
| | - Kefeng Wang
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China,*Correspondence: Chunming Zhu, ; Kefeng Wang,
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12
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Liang H, Zhao Y, Liu K, Xiao Y, Chen K, Li D, Zhong S, Zhao Z, Wu D, Peng Y. The mechanism of lncRNAs in the crosstalk between epithelial-mesenchymal transition and tumor microenvironment for early colon adenocarcinoma based on molecular subtyping. Front Genet 2022; 13:997739. [PMID: 36467998 PMCID: PMC9708740 DOI: 10.3389/fgene.2022.997739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 10/17/2022] [Indexed: 09/10/2024] Open
Abstract
A large number of colon adenocarcinoma (COAD) patients are already advanced when diagnosed. In this study, we aimed to further understand the mechanism of tumor development in early COAD by focusing on epithelial-mesenchymal transition (EMT) and long non-coding RNAs (lncRNAs). Expression profiles of early COAD patients were obtained from public databases. EMT-related lncRNAs were used as a basis for constructing molecular subtypes through unsupervised consensus clustering. Genomic features, pathways and tumor microenvironment (TME) were compared between two subtypes. LncATLAS database was applied to analyze the relation between lncRNAs and transcription factors (TFs). First order partial correlation analysis was conducted to identify key EMT-related lncRNAs.C1 and C2 subtypes with distinct prognosis were constructed. Oncogenic pathways such as EMT, KRAS signaling, JAK-STAT signaling, and TGF-β signaling were significantly enriched in C2 subtype. Higher immune infiltration and expression of immune checkpoints were also observed in C2 subtype, suggesting the key EMT-related lncRNAs may play a critical role in the modulation of TME. In addition, JAK-STAT signaling pathway was obviously enriched in upregulated TFs in C2 subtype, which indicated a link between key lncRNAs and JAK-STAT signaling that may regulate TME. The study further expanded the research on the role of EMT-related lncRNAs in the early COAD. The six identified EMT-related lncRNAs could serve as biomarkers for early screening COAD.
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Affiliation(s)
- Hanlin Liang
- Chemotherapy Department, Zhongshan City People’s Hospital, Zhongshan, China
| | - Yi Zhao
- GI Medicine, The Third Hospital Affiliated to Naval Medical University, Shanghai, China
| | - Kai Liu
- Department of Colorectal Oncology, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Yajie Xiao
- Department of Medicine, YuceBio Technology Co., Ltd., Shenzhen, China
| | - Kexu Chen
- Chemotherapy Department, Zhongshan City People’s Hospital, Zhongshan, China
| | - Delan Li
- Chemotherapy Department, Zhongshan City People’s Hospital, Zhongshan, China
| | - Shupeng Zhong
- Chemotherapy Department, Zhongshan City People’s Hospital, Zhongshan, China
| | - Zhikun Zhao
- Department of Medicine, YuceBio Technology Co., Ltd., Shenzhen, China
| | - Dongfang Wu
- Department of Medicine, YuceBio Technology Co., Ltd., Shenzhen, China
| | - Yu Peng
- Oncology Department, Jiangmen Central Hospital, Jiangmen, China
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13
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Yao L, Chen L, Zhou H, Duan F, Wang L, Zhang Y. Long Noncoding RNA NEAT1 Promotes the Progression of Breast Cancer by Regulating miR-138-5p/ ZFX Axis. Cancer Biother Radiopharm 2022; 37:636-649. [PMID: 32833504 DOI: 10.1089/cbr.2019.3515] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background: Growing evidence demonstrated that long noncoding RNAs (lncRNAs) were involved in the progression of diverse cancers, including breast cancer (BC). Recent studies indicated that lncRNA nuclear enriched abundant transcript 1 (NEAT1) was overexpressed and facilitated tumor processes in many cancers. Nevertheless, the underlying mechanism of NEAT1 in regulating BC progression is still largely unknown. Materials and Methods: The abundance of NEAT1, microRNA-138-5p (miR-138-5p), and zinc finger protein X-linked (ZFX) was assessed by quantitative real-time polymerase chain reaction. Cell Counting Kit-8 (CCK-8) assay, flow cytometry, and transwell assay were utilized to evaluate cell proliferation, apoptosis, migration, and invasion, respectively. Western blot analysis was applied to detect the protein expression of CyclinD1, Bax, E-cadherin, and ZFX. The interaction between miR-138-5p and NEAT1 or ZFX was predicted by starBase v3.0 and validated by dual-luciferase reporter, RNA pull-down, and RNA immunoprecipitation assays. The mice xenograft model was established to investigate the roles of NEAT1 in vivo. Results: NEAT1 was highly expressed and miR-138-5p was lowly expressed in BC tissues and cells. NEAT1 interference or miR-138-5p restoration repressed cell proliferation, migration, and invasion but accelerated apoptosis in BC cells. Moreover, miR-138-5p directly interacted with NEAT1 and its knockdown reversed the suppressive impact of NEAT1 downregulation on the progression of BC cells. In addition, ZFX was a downstream target of miR-138-5p and its upregulation attenuated the antitumor role of miR-138-5p in BC cells. Besides, ZFX expression was positively regulated by NEAT1 and inversely modulated by miR-138-5p. Furthermore, interference of NEAT1 inhibited tumor growth by upregulating miR-138-5p and downregulating ZFX. Conclusion: NEAT1 affected BC progression through modulating miR-138-5p/ZFX axis, providing a vital theoretical basis for BC treatment.
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Affiliation(s)
- Lige Yao
- Department of Medical Oncology Ward 2, The Third People's Hospital of Zhengzhou, Zhengzhou, China
| | - Lu Chen
- Department of Medical Oncology Ward 2, The Third People's Hospital of Zhengzhou, Zhengzhou, China
| | - Hanli Zhou
- Department of Medical Oncology Ward 2, The Third People's Hospital of Zhengzhou, Zhengzhou, China
| | - Fangfang Duan
- Department of Medical Oncology Ward 2, The Third People's Hospital of Zhengzhou, Zhengzhou, China
| | - Liuyan Wang
- Department of Medical Oncology Ward 2, The Third People's Hospital of Zhengzhou, Zhengzhou, China
| | - Yujie Zhang
- Department of Medical Oncology Ward 2, The Third People's Hospital of Zhengzhou, Zhengzhou, China
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Khanbabaei H, Ebrahimi S, García-Rodríguez JL, Ghasemi Z, Pourghadamyari H, Mohammadi M, Kristensen LS. Non-coding RNAs and epithelial mesenchymal transition in cancer: molecular mechanisms and clinical implications. J Exp Clin Cancer Res 2022; 41:278. [PMID: 36114510 PMCID: PMC9479306 DOI: 10.1186/s13046-022-02488-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 09/06/2022] [Indexed: 11/30/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) is a fundamental process for embryonic development during which epithelial cells acquire mesenchymal characteristics, and the underlying mechanisms confer malignant features to carcinoma cells such as dissemination throughout the organism and resistance to anticancer treatments. During the past decades, an entire class of molecules, called non-coding RNA (ncRNA), has been characterized as a key regulator of almost every cellular process, including EMT. Like protein-coding genes, ncRNAs can be deregulated in cancer, acting as oncogenes or tumor suppressors. The various forms of ncRNAs, including microRNAs, PIWI-interacting RNAs, small nucleolar RNAs, transfer RNA-derived RNA fragments, long non-coding RNAs, and circular RNAs can orchestrate the complex regulatory networks of EMT at multiple levels. Understanding the molecular mechanism underlying ncRNAs in EMT can provide fundamental insights into cancer metastasis and may lead to novel therapeutic approaches. In this review, we describe recent advances in the understanding of ncRNAs in EMT and provide an overview of recent ncRNA applications in the clinic.
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The Long Noncoding RNA MEG3 Retains Epithelial-Mesenchymal Transition by Sponging miR-146b-5p to Regulate SLFN5 Expression in Breast Cancer Cells. J Immunol Res 2022; 2022:1824166. [PMID: 36033389 PMCID: PMC9411926 DOI: 10.1155/2022/1824166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 06/10/2022] [Indexed: 12/24/2022] Open
Abstract
More and more studies have shown that long noncoding RNAs (lncRNAs) play essential roles in malignant tumors. The lncRNA MEG3 serves as a crucial molecule in breast cancer development, but the specific molecular mechanism needs to be further explored. We previously reported that Schlafen family member 5 (SLFN5) inhibits breast cancer malignant development by regulating epithelial-mesenchymal transition (EMT), invasion, and proliferation/apoptosis. Herein, we demonstrated that MEG3 was downregulated in pan-cancers and correlated with SLFN5 expression positively in breast cancer by bioinformatics analysis of TCGA and UCSC Xena data. Intervention with MEG3 positively affected SLFN5 expression in breast cancer cells. MEG3 repressed EMT and migration/invasion, similar to our previously reported functions of SLFN5 in breast cancer. Through bioinformatics analysis of starBase and LncBase data, 12 miRNAs were found to regulate both SLFN5 and MEG3, in which miR-146b-5p was confirmed to be regulated by MEG3 using MEG3 siRNA and overexpression method. MiR-146b-5p could bind to both SLFN5 3′UTR and MEG3, and inhibit their expression in a competing endogenous RNA mechanism, assayed by luciferase reporter and RNA pull down methods. Therefore, we conclude that MEG3 positively modulates SLFN5 expression by sponging miR-146b-5p and inhibits breast cancer development.
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16
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Non-Coding RNAs and Prediction of Preeclampsia in the First Trimester of Pregnancy. Cells 2022; 11:cells11152428. [PMID: 35954272 PMCID: PMC9368389 DOI: 10.3390/cells11152428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 12/13/2022] Open
Abstract
Preeclampsia (PE) is a major cause of maternal and perinatal morbidity and mortality. The only fundamental treatment for PE is the termination of pregnancy. Therefore, not only severe maternal complications but also perinatal complications due to immaturity of the infant associated with early delivery are serious issues. The treatment and prevention of preterm onset preeclampsia (POPE) are challenging. In 2017, the ASPRE trial showed that a low oral dose of aspirin administered to POPE high-risk women in early pregnancy reduced POPE by 62%. A prediction algorithm at 11–13 weeks of gestation identifies POPE with 75% sensitivity when the false positive rate is set at 10%. New biomarkers to increase the accuracy of the prediction model for POPE high-risk women in early pregnancy are needed. In this review, we focused on non-coding RNAs (ncRNAs) as potential biomarkers for the prediction of POPE. Highly expressed ncRNAs in the placenta in early pregnancy may play crucial roles in placentation. Furthermore, placenta-specific ncRNAs have been detected in maternal blood. In this review, we summarized ncRNAs that were highly expressed in the primary human placenta in early pregnancy. We also presented highly expressed ncRNAs in the placenta that were associated with or predictive of the development of PE in an expression analysis of maternal blood during the first trimester of pregnancy. These previous studies showed that the chromosome 19 microRNA (miRNA) -derived miRNAs (e.g., miR-517-5p, miR-518b, and miR-520h), the hypoxia-inducible miRNA (miR-210), and long non-coding RNA H19, were not only highly expressed in the early placenta but were also significantly up-regulated in the blood at early gestation in pregnant women who later developed PE. These maternal circulating ncRNAs in early pregnancy are expected to be possible biomarkers for POPE.
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17
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Pan T, Ding H, Jin L, Zhang S, Wu D, Pan W, Dong M, Ma X, Chen Z. DNMT1-mediated demethylation of lncRNA MEG3 promoter suppressed breast cancer progression by repressing Notch1 signaling pathway. Cell Cycle 2022; 21:2323-2337. [PMID: 35822955 DOI: 10.1080/15384101.2022.2094662] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Breast carcinoma is one of the common causes of cancer-related mortality in women. Maternally expressed gene 3 (MEG3), a lncRNA located at 14q32, can be involved in carcinogenesis. In this study, we discovered that MEG3 was downregulated by CpG hypermethylation within its gene promoter. Functionally, treatment of breast cancer cells with the DNA methylation inhibitor 5-AzadC as well as silencing of DNA methyltransferase-1 (DNMT1) could decrease the abnormal hypermethylation of the MEG3 promoter, reverse MEG3 expression, inhibit cell proliferation and promote cell apoptosis. In addition, we found that MEG3 expression was negatively correlated with DNMT1. Mechanistically, MEG3 knockdown combined with 5-AzadC or sh-DNMT1 treatment restored the expression of Notch1 receptor, leading to the Notch1 pathway activation, and promoted the progression of epithelial mesenchymal transformation (EMT). Finally, the mice tumor model experiments showed that DNMT1 knockdown can increase MEG3 expression and inhibit tumor growth. Collectively, our findings uncovered that DNMT1-mediated MEG3 demethylation leads to MEG3 upregulation, which in turn inhibits the Notch1 pathway and EMT process in breast cancer.
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Affiliation(s)
- Tingting Pan
- Department of General Surgery, Diagnosis and Therapy Center of Thyroid and Breast, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Hospital, Hefei, Anhui, P.R. China
| | - Haiwen Ding
- Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Hospital, Hefei, Anhui, P.R. China
| | - Le Jin
- Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Hospital, Hefei, Anhui, P.R. China
| | - Shaobo Zhang
- Department of General Surgery, Hefei High-tech Cardiovascular Hospital, Hefei, Anhui, P.R. China
| | - Delin Wu
- Department of General Surgery, Diagnosis and Therapy Center of Thyroid and Breast, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Hospital, Hefei, Anhui, P.R. China
| | - Wanwan Pan
- Anhui Provincial Hospital, Wannan Medical College, Hefei, Anhui, P.R. China
| | - Menghao Dong
- Anhui Provincial Hospital, Wannan Medical College, Hefei, Anhui, P.R. China
| | - Xiaopeng Ma
- Department of General Surgery, Diagnosis and Therapy Center of Thyroid and Breast, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Hospital, Hefei, Anhui, P.R. China
| | - Zhaolin Chen
- Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Hospital, Hefei, Anhui, P.R. China
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18
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Zhu X, Lv L, Wang M, Fan C, Lu X, Jin M, Li S, Wang F. DNMT1 facilitates growth of breast cancer by inducing MEG3 hyper-methylation. Cancer Cell Int 2022; 22:56. [PMID: 35109842 PMCID: PMC8812010 DOI: 10.1186/s12935-022-02463-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 01/11/2022] [Indexed: 11/25/2022] Open
Abstract
Background To understand the effect of DNMT1-mediated MEG3 promoter methylation on breast cancer progression. Methods Expression of DNMT1, MEG3 and miR-494-3p was assayed by qRT-PCR and western blot. Methylation-specific PCR was used to examine MEG3 promoter methylation level. ChIP, RNA binding protein immunoprecipitation assay and dual-luciferase reporter gene assay were applied to verify interaction between DNMT1 and MEG3, miR-494-3p and MEG3 and OTUD4. CCK-8, wound healing and Transwell assays were used to detect biological functions of breast cancer cells. Tumor growth was observed by tumor xenograft model. Results DNMT1 and miR-494-3p were highly expressed while MEG3 and OTUD4 were lowly expressed in breast cancer cells. Knockdown of DNMT1 inhibited progression of breast cancer cells by enhance MEG3 expression through demethylation. MEG3 could downregulate miR-494-3p expression, and OTUD4 was a target of miR-494-3p. Upregulation of MEG3 and downregulation of miR-494-3p both inhibited malignant behavior of cells in vitro. In addition, high MEG3 expression restrained growth of breast cancer in vivo. Conclusion Briefly, our results demonstrated that, DNMT1 induced methylation of MEG3 promoter, and played a key role in breast cancer growth throughmiR-494-3p/OTUD4 axis. These findings provide new insights into molecular therapeutic targets for breast cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-022-02463-8.
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Affiliation(s)
- Xiaotao Zhu
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Lin Lv
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Mingzheng Wang
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Chen Fan
- Department of Breast Surgery, Women and Children Branch of Jinhua Municipal Central Hospital, Jinhua, 321000, China
| | - Xiaofeng Lu
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Miaomiao Jin
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Shuguang Li
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Fan Wang
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China.
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Yao J, Li G, Liu M, Yang S, Su H, Ye C. lnc‑MICAL2‑1 sponges miR‑25 to regulate DKK3 expression and inhibits activation of the Wnt/β‑catenin signaling pathway in breast cancer. Int J Mol Med 2022; 49:23. [PMID: 34970696 DOI: 10.3892/ijmm.2021.5078] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 10/19/2021] [Indexed: 11/06/2022] Open
Abstract
The Dickkopf 3 (DKK3) protein antagonizes the Wnt receptor complex in the Wnt signaling pathway; however, to date, there have been no relevant studies investigating its upstream regulatory mechanism in breast cancer (BC), to the best of our knowledge. The present study aimed to explore whether long non‑coding RNA MICAL2‑1 (lnc‑MICAL2‑1) sponged microRNA (miR)‑25 to regulate DKK3 and inhibit activation of the Wnt/β‑catenin signaling pathway. The Atlas of non‑coding RNA in Cancer database was used to measure the expression levels of lnc‑MICAL2‑1 and their correlation with DKK3 expression levels. In addition, cell proliferation, invasion and migration were determined following the silencing or overexpression of lnc‑MICAL2‑1. The binding between lnc‑MICAL2‑1 and miR‑25, or miR‑25 and DKK3 was verified using RNA pull‑down and dual‑luciferase reporter assays. The effects of overexpression or knockdown of lnc‑MICAL2‑1 on DKK3 expression and the Wnt signaling pathway were further evaluated in a nude mouse xenograft model. The results revealed that, compared with in adjacent normal tissue, the expression levels of lnc‑MICAL2‑1 were downregulated in BC tissues, and the expression levels of lnc‑MICAL2‑1 were found to be positively correlated with DKK3 expression. The overexpression of lnc‑MICAL2‑1 in BC cells upregulated the mRNA expression levels of DKK3 and inhibited their proliferation. Results from the RNA pull‑down and dual luciferase reporter assays validated that lnc‑MICAL2‑1 could bind to miR‑25, which targets DKK3. The in vivo experimental data demonstrated that lnc‑MICAL2‑1 inhibited tumor growth via regulating the Wnt signaling pathway. In conclusion, the findings of the present study highlighted a novel molecular mechanism through which lnc‑MICAL2‑1 may regulate the DKK3‑mediated Wnt signaling pathway in BC, highlighting potential targets for the treatment of the disease.
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Affiliation(s)
- Jia Yao
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510650, P.R. China
| | - Guanqiao Li
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510650, P.R. China
| | - Minfeng Liu
- Department of General Surgery‑Breast Center, Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong 510650, P.R. China
| | - Shiping Yang
- Department of Radiotherapy, Hainan General Hospital, Haikou, Hainan 570311, P.R. China
| | - Huiluan Su
- Department of Radiotherapy, Hainan General Hospital, Haikou, Hainan 570311, P.R. China
| | - Changsheng Ye
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510650, P.R. China
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20
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Research updates on the clinical implication of long noncoding RNA in digestive system cancers and chemoresistance. 3 Biotech 2021; 11:423. [PMID: 34603923 DOI: 10.1007/s13205-021-02971-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 08/19/2021] [Indexed: 10/20/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are implicated in various biological processes, such as cell proliferation, differentiation, apoptosis, migration, and invasion. They are also key players in various biological pathways. LncRNA was considered as 'translational noise' before 1980s. It has been reported that lncRNAs are aberrantly expressed in different cancers, either as oncogene or tumor suppressor gene. Therefore, more and more lncRNAs are recognized as potential diagnostic biomarkers and/or therapeutic targets. As competitive endogenous RNA, lncRNAs can interact with microRNA to alter the expression of target genes, which may have extensive clinical implications in cancers, including diagnosis, treatment, prognosis, and chemoresistance. This review comprehensively summarizes the functions and clinical relevance of lncRNAs in digestive system cancers, especially as a potential tool to overcome chemoresistance.
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Thakur KK, Kumar A, Banik K, Verma E, Khatoon E, Harsha C, Sethi G, Gupta SC, Kunnumakkara AB. Long noncoding RNAs in triple-negative breast cancer: A new frontier in the regulation of tumorigenesis. J Cell Physiol 2021; 236:7938-7965. [PMID: 34105151 DOI: 10.1002/jcp.30463] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/11/2021] [Accepted: 05/20/2021] [Indexed: 12/16/2022]
Abstract
In recent years, triple-negative breast cancer (TNBC) has emerged as the most aggressive subtype of breast cancer and is usually associated with increased mortality worldwide. The severity of TNBC is primarily observed in younger women, with cases ranging from approximately 12%-24% of all breast cancer cases. The existing hormonal therapies offer limited clinical solutions in completely circumventing the TNBC, with chemoresistance and tumor recurrences being the common hurdles in the path of TNBC treatment. Accumulating evidence has correlated the dysregulation of long noncoding RNAs (lncRNAs) with increased cell proliferation, invasion, migration, tumor growth, chemoresistance, and decreased apoptosis in TNBC. Various clinical studies have revealed that aberrant expression of lncRNAs in TNBC tissues is associated with poor prognosis, lower overall survival, and disease-free survival. Due to these specific characteristics, lncRNAs have emerged as novel diagnostic and prognostic biomarkers for TNBC treatment. However, the underlying mechanism through which lncRNAs perform their actions remains unclear, and extensive research is being carried out to reveal it. Therefore, understanding of mechanisms regulating the modulation of lncRNAs will be a substantial breakthrough in effective treatment therapies for TNBC. This review highlights the association of several lncRNAs in TNBC progression and treatment, along with their possible functions and mechanisms.
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Affiliation(s)
- Krishan K Thakur
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
| | - Aviral Kumar
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
| | - Kishore Banik
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
| | - Elika Verma
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
| | - Elina Khatoon
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
| | - Choudhary Harsha
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Subash C Gupta
- Department of Biochemistry, Laboratory for Translational Cancer Research, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh, India
| | - Ajaikumar B Kunnumakkara
- Department of Biosciences and Bioengineering, Cancer Biology Laboratory, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
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22
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De Martino M, Esposito F, Pallante P. Long non-coding RNAs regulating multiple proliferative pathways in cancer cell. Transl Cancer Res 2021; 10:3140-3157. [PMID: 35116622 PMCID: PMC8797882 DOI: 10.21037/tcr-21-230] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/27/2021] [Indexed: 01/17/2023]
Abstract
Long non-coding RNAs (lncRNAs) belong to an extremely heterogeneous class of non-coding RNAs with a length ranging from 200 to 100,000 bp. They modulate a series of cellular pathways in both physiological and pathological context. It is no coincidence that they are expressed in an aberrant way in pathologies such as cancer, so as to deserve to be subclassified as oncogenes or tumor suppressors. These molecules are also involved in the regulation of cancer cell proliferation. Several lncRNAs are able to modulate cell growth both positively and negatively, and in this review we have focused on a small group of them, characterized by the simultaneous action on different pathways regulating cell proliferation. They have been considered in the light of their behavior in three different subtypes of proliferative pathways that we can define as (I) tumor suppressor, (II) oncogenic and (III) transcriptionally-driven. More specifically, we have characterized some lncRNAs considered oncogenes (such as H19, linc-ROR, MALAT1, HULC, HOTAIR and ANRIL), tumor suppressors (such as MEG3 and lincRNA-p21), and both oncogenes/tumor suppressors (UCA1 and TUG1) in a little more detail. As can be understood from the review, the interactions between lncRNAs and their molecular targets, only in the context of controlling cell proliferation, give rise to an intricate molecular network, the understanding of which, in the future, will certainly be of help for the treatment of molecular diseases such as cancer.
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Affiliation(s)
- Marco De Martino
- Institute of Experimental Endocrinology and Oncology (IEOS) "G. Salvatore", National Research Council (CNR), Naples, Italy
| | - Francesco Esposito
- Institute of Experimental Endocrinology and Oncology (IEOS) "G. Salvatore", National Research Council (CNR), Naples, Italy
| | - Pierlorenzo Pallante
- Institute of Experimental Endocrinology and Oncology (IEOS) "G. Salvatore", National Research Council (CNR), Naples, Italy
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23
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Kesimoglu ZN, Bozdag S. Crinet: A computational tool to infer genome-wide competing endogenous RNA (ceRNA) interactions. PLoS One 2021; 16:e0251399. [PMID: 33983999 PMCID: PMC8118266 DOI: 10.1371/journal.pone.0251399] [Citation(s) in RCA: 3] [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: 12/16/2020] [Accepted: 04/24/2021] [Indexed: 01/01/2023] Open
Abstract
To understand driving biological factors for complex diseases like cancer, regulatory circuity of genes needs to be discovered. Recently, a new gene regulation mechanism called competing endogenous RNA (ceRNA) interactions has been discovered. Certain genes targeted by common microRNAs (miRNAs) "compete" for these miRNAs, thereby regulate each other by making others free from miRNA regulation. Several computational tools have been published to infer ceRNA networks. In most existing tools, however, expression abundance sufficiency, collective regulation, and groupwise effect of ceRNAs are not considered. In this study, we developed a computational tool named Crinet to infer genome-wide ceRNA networks addressing critical drawbacks. Crinet considers all mRNAs, lncRNAs, and pseudogenes as potential ceRNAs and incorporates a network deconvolution method to exclude the spurious ceRNA pairs. We tested Crinet on breast cancer data in TCGA. Crinet inferred reproducible ceRNA interactions and groups, which were significantly enriched in the cancer-related genes and processes. We validated the selected miRNA-target interactions with the protein expression-based benchmarks and also evaluated the inferred ceRNA interactions predicting gene expression change in knockdown assays. The hub genes in the inferred ceRNA network included known suppressor/oncogene lncRNAs in breast cancer showing the importance of non-coding RNA's inclusion for ceRNA inference. Crinet-inferred ceRNA groups that were consistently involved in the immune system related processes could be important assets in the light of the studies confirming the relation between immunotherapy and cancer. The source code of Crinet is in R and available at https://github.com/bozdaglab/crinet.
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Affiliation(s)
- Ziynet Nesibe Kesimoglu
- Department of Computer Science and Engineering, University of North Texas, Denton, Texas, United States of America
- Department of Computer Science, Marquette University, Milwaukee, Wisconsin, United States of America
| | - Serdar Bozdag
- Department of Computer Science and Engineering, University of North Texas, Denton, Texas, United States of America
- Department of Computer Science, Marquette University, Milwaukee, Wisconsin, United States of America
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24
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Buccarelli M, Lulli V, Giuliani A, Signore M, Martini M, D'Alessandris QG, Giannetti S, Novelli A, Ilari R, Giurato G, Boe A, Castellani G, Spartano S, Marangi G, Biffoni M, Genuardi M, Pallini R, Marziali G, Ricci-Vitiani L. Deregulated expression of the imprinted DLK1-DIO3 region in glioblastoma stemlike cells: tumor suppressor role of lncRNA MEG3. Neuro Oncol 2021; 22:1771-1784. [PMID: 32459347 PMCID: PMC7746944 DOI: 10.1093/neuonc/noaa127] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Glioblastoma (GBM) stemlike cells (GSCs) are thought to be responsible for the maintenance and aggressiveness of GBM, the most common primary brain tumor in adults. This study aims at elucidating the involvement of deregulations within the imprinted delta-like homolog 1 gene‒type III iodothyronine deiodinase gene (DLK-DIO3) region on chromosome 14q32 in GBM pathogenesis. Methods Real-time PCR analyses were performed on GSCs and GBM tissues. Methylation analyses, gene expression, and reverse-phase protein array profiles were used to investigate the tumor suppressor function of the maternally expressed 3 gene (MEG3). Results Loss of expression of genes and noncoding RNAs within the DLK1-DIO3 region was observed in GSCs and GBM tissues compared with normal brain. This downregulation is mainly mediated by epigenetic silencing. Kaplan–Meier analysis indicated that low expression of MEG3 and MEG8 long noncoding (lnc)RNAs significantly correlated with short survival in GBM patients. MEG3 restoration impairs tumorigenic abilities of GSCs in vitro by inhibiting cell growth, migration, and colony formation and decreases in vivo tumor growth, reducing infiltrative growth. These effects were associated with modulation of genes involved in cell adhesion and epithelial-to-mesenchymal transition (EMT). Conclusion In GBM, MEG3 acts as a tumor suppressor mainly regulating cell adhesion, EMT, and cell proliferation, thus providing a potential candidate for novel GBM therapies.
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Affiliation(s)
| | | | | | - Michele Signore
- Core Facilities, Higher Institute of Health (Istituto Superiore di Sanità), Rome, Italy
| | - Maurizio Martini
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Institutes of Pathology, Catholic University School of Medicine, Rome, Italy
| | - Quintino G D'Alessandris
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Stefano Giannetti
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Human Anatomy, Catholic University School of Medicine, Rome, Italy
| | - Agnese Novelli
- Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Ramona Ilari
- Department of Oncology and Molecular Medicine Rome, Italy
| | - Giorgio Giurato
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery, and Dentistry, "Scuola Medica Salernitana," University of Salerno, Baronissi, Salerno, Italy.,Genomix4Life Srl, University of Salerno, Baronissi, Salerno, Italy
| | - Alessandra Boe
- Core Facilities, Higher Institute of Health (Istituto Superiore di Sanità), Rome, Italy
| | | | - Serena Spartano
- Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Giuseppe Marangi
- Department of Oncology and Molecular Medicine Rome, Italy.,Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine Rome, Italy
| | - Maurizio Genuardi
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Roberto Pallini
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Giovanna Marziali
- Department of Oncology and Molecular Medicine Rome, Italy.,Genomic Medicine, Catholic University School of Medicine, Rome, Italy
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25
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Liu S, Zhang J, Zheng T, Mou X, Xin W. Circ_WWC3 overexpression decelerates the progression of osteosarcoma by regulating miR-421/PDE7B axis. Open Life Sci 2021; 16:229-241. [PMID: 33817314 PMCID: PMC7968534 DOI: 10.1515/biol-2021-0021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 11/04/2020] [Accepted: 01/04/2021] [Indexed: 12/22/2022] Open
Abstract
Background Emerging evidence has shown that circular RNAs (circRNAs) are vital regulators in osteosarcoma (OS) progression. However, the effects of circ_WWC3 in OS have not been explored. In this research, the functions and mechanisms of circ_WWC3 in OS were investigated. Methods Quantitative reverse trancription polymerase chain reaction (qRT-PCR) was adopted to determine the levels of circ_WWC3, WW and WWC3 mRNA, miR-421, and phosphodiesterase 7B (PDE7B) mRNA. RNase R assay was used to determine the characteristic of circ_WWC3. Colony formation assay and 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay were applied for cell growth. Transwell assay was performed for cell migration and invasion. Flow cytometry analysis was utilized for cell apoptosis. Western blot assay was conducted for the levels of apoptosis-related proteins and PDE7B protein. Dual-luciferase reporter assay was carried out to analyze the targeting relationship between miR-421 and circ_WWC3 or PDE7B. The murine xenograft model was established to explore the effect of circ_WWC3 in vivo. Results Compared to normal tissues and cells, circ_WWC3 and PDE7B were downregulated in OS tissues and cells. Overexpression of circ_WWC3 or PDE7B suppressed OS cell growth, migration, and invasion and promoted apoptosis in vitro. Regarding the mechanism analysis, circ_WWC3 positively modulated PDE7B expression by targeting miR-421. MiR-421 overexpression restored the impacts of circ_WWC3 on OS cell growth, metastasis, and apoptosis. Inhibition of miR-421 repressed the malignant behaviors of OS cells by targeting PDE7B. In addition, circ_WWC3 inhibited the tumorigenicity of OS in vivo. Conclusion Circ_WWC3 overexpression slowed the development of OS by elevating PDE7B via sponging miR-421.
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Affiliation(s)
- Sihai Liu
- Department of Orthopedics, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Jing Zhang
- Taizhou Vocational and Technical College, Taizhou, Zhejiang, 318000, China
| | - Ting Zheng
- Department Emergency, Taizhou First People’s Hospital, No. 218 Hengjie Road, Huangyan District, Taizhou, Zhejiang, 318020, China
| | - Xiongneng Mou
- Department Emergency, Taizhou First People’s Hospital, No. 218 Hengjie Road, Huangyan District, Taizhou, Zhejiang, 318020, China
| | - Wenwei Xin
- Department Emergency, Taizhou First People’s Hospital, No. 218 Hengjie Road, Huangyan District, Taizhou, Zhejiang, 318020, China
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26
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Guo J, Fang Q, Liu Y, Xie W, Zhang Y, Li C. Identifying critical protein-coding genes and long non-coding RNAs in non-functioning pituitary adenoma recurrence. Oncol Lett 2021; 21:264. [PMID: 33664827 PMCID: PMC7882882 DOI: 10.3892/ol.2021.12525] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 12/17/2020] [Indexed: 12/14/2022] Open
Abstract
Non-functioning pituitary adenoma (NFPA) is a very common type of intracranial tumor. Monitoring and predicting the postoperative recurrence of NFPAs is difficult, as these adenomas do not present with serum hormone hypersecretion. Long non-coding RNAs (lncRNAs) and protein-coding genes (PCGs) play critical roles in the development and progression of numerous tumors. However, the complex network of RNA interactions related to the mechanisms underlying the postoperative recurrence of NFPA is still unclear. In the present study, 73 patients with NFPA were investigated using high-throughput sequencing and follow-up investigations. In total, 6 of these patients with recurrence within 1 year after surgery were selected as the fast recurrence group, and 6 patients with recurrence 5 years after surgery were selected as the slow recurrence group. By performing differential expression analysis of the fast recurrence and slow recurrence groups, a set of differentially expressed PCGs and lncRNAs were obtained (t-test, P<0.05). Next, protein-protein interaction coregulatory networks and lncRNA-mRNA coexpression networks were identified. In addition, the hub lncRNA-mRNA modules related to NFPA recurrence were further screened and transcriptome expression markers for NFPA regression were identified (log-rank test, P<0.05). Finally, the ability of the hub and module genes to predict recurrence and progression-free survival in patients with NFPA was evaluated. To confirm the credibility of the bioinformatic analyses, nucleolar protein 6 and LL21NC02-21A1.1 were randomly selected from among the genes with prognostic significance for validation by reverse transcription-quantitative PCR in another set of NFPA samples (n=9). These results may be helpful for evaluating the slow and rapid recurrence of NFPA after surgery and exploring the mechanisms underlying NFPA recurrence. Future effective biomarkers and therapeutic targets may also be revealed.
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Affiliation(s)
- Jing Guo
- Department of Cell Biology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, P.R. China
| | - Qiuyue Fang
- Department of Cell Biology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, P.R. China
| | - Yulou Liu
- Department of Cell Biology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, P.R. China
| | - Weiyan Xie
- Department of Cell Biology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, P.R. China
| | - Yazhuo Zhang
- Department of Cell Biology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, P.R. China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,Cell laboratory, Beijing Institute for Brain Disorders Brain Tumor Center, Beijing 100070, P.R. China.,Department of Neurosurgery, China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Chuzhong Li
- Department of Cell Biology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, P.R. China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,Cell laboratory, Beijing Institute for Brain Disorders Brain Tumor Center, Beijing 100070, P.R. China.,Department of Neurosurgery, China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
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27
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Abstract
Despite the decline in death rate from breast cancer and recent advances in targeted therapies and combinations for the treatment of metastatic disease, metastatic breast cancer remains the second leading cause of cancer-associated death in U.S. women. The invasion-metastasis cascade involves a number of steps and multitudes of proteins and signaling molecules. The pathways include invasion, intravasation, circulation, extravasation, infiltration into a distant site to form a metastatic niche, and micrometastasis formation in a new environment. Each of these processes is regulated by changes in gene expression. Noncoding RNAs including microRNAs (miRNAs) are involved in breast cancer tumorigenesis, progression, and metastasis by post-transcriptional regulation of target gene expression. miRNAs can stimulate oncogenesis (oncomiRs), inhibit tumor growth (tumor suppressors or miRsupps), and regulate gene targets in metastasis (metastamiRs). The goal of this review is to summarize some of the key miRNAs that regulate genes and pathways involved in metastatic breast cancer with an emphasis on estrogen receptor α (ERα+) breast cancer. We reviewed the identity, regulation, human breast tumor expression, and reported prognostic significance of miRNAs that have been documented to directly target key genes in pathways, including epithelial-to-mesenchymal transition (EMT) contributing to the metastatic cascade. We critically evaluated the evidence for metastamiRs and their targets and miRNA regulation of metastasis suppressor genes in breast cancer progression and metastasis. It is clear that our understanding of miRNA regulation of targets in metastasis is incomplete.
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Affiliation(s)
- Belinda J Petri
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, 40292, USA
| | - Carolyn M Klinge
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, 40292, USA.
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28
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Zhou Y, Yang H, Xia W, Cui L, Xu R, Lu H, Xue D, Tian Z, Ding T, Cao Y, Shi Q, He X. LncRNA MEG3 inhibits the progression of prostate cancer by facilitating H3K27 trimethylation of EN2 through binding to EZH2. J Biochem 2020; 167:295-301. [PMID: 31790140 DOI: 10.1093/jb/mvz097] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 10/15/2019] [Indexed: 12/18/2022] Open
Abstract
This study aims to study the effects of intra-nuclear lncRNA MEG3 on the progression of prostate cancer and the underlying mechanisms. Expressions of relative molecules were detected by Quantitative real time PCR (qRT-PCR) and western blot. Chromatin immunoprecipitation and RNA immunoprecipitation (RIP) assays were used to evaluate the interaction between intra-nuclear MEG3, histone methyltransferase EZH2 and Engrailed-2 (EN2). The impacts of MEG3 on the viability, proliferation and invasion of prostate cancer cells (PC3) were evaluated by methyl thiazolyl tetrazolium, colony formation and transwell assays, respectively. PC3 cells were transfected with MEG3 and transplanted into nude mice to analyse the effect of MEG3 on tumourigenesis of PC3 cells in vivo. EN2 expression was inversely proportional to MEG3 in the prostate cancer tissues and PC3 cells. RIP results showed that intra-nuclear MEG3 could bind to EZH2. Knockdown of MEG3 and/or EZH2 up-regulated EN2 expression and reduced the recruitment of EZH2 and H3K27me3 to EN2, while over-expressed MEG3 caused opposite effects. MEG3 over-expression suppressed cell viability, colony formation, cell invasion and migration of PC3 cells in vitro and inhibited tumourigenesis of PC3 cells in vivo, while EN2 over-expression diminished the effects. These findings indicated that MEG3 facilitated H3K27 trimethylation of EN2 via binding to EZH2, thus suppressed the development of prostate cancer.
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Affiliation(s)
- Yaojun Zhou
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Hongqiong Yang
- Department of Geriatric Medicine, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Wei Xia
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Li Cui
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Renfang Xu
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Hao Lu
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Dong Xue
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Zinong Tian
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Tao Ding
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Yunjie Cao
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Qianqian Shi
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
| | - Xiaozhou He
- Department of Surgical Urology, The Third Affiliated Hospital of Soochow University, No. 185 Juqian Street, Changzhou 213003, Jiangsu Province, China
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29
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Akshaya RL, Akshaya N, Selvamurugan N. A computational study of non-coding RNAs on the regulation of activating transcription factor 3 in human breast cancer cells. Comput Biol Chem 2020; 89:107386. [PMID: 33068918 DOI: 10.1016/j.compbiolchem.2020.107386] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/05/2020] [Accepted: 09/24/2020] [Indexed: 12/13/2022]
Abstract
We previously reported that activating transcription factor 3 (ATF3), an adaptive response gene, plays a dichotomous role in regulating several molecular processes during breast cancer progression. ATF3 promoted the expression of runt-related transcription factor 2 (Runx2, a metastatic gene) and activated matrix metalloproteinase 13 (MMP13, an invasive gene), thereby fostering proliferation and bone-metastasis of the breast cancer cells. Targeting ATF3 may mitigate the metastatic spread of breast cancer and improve the patient's lifespan. Non-coding RNAs (ncRNAs) such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs) are the new-era regimens that are currently utilized for diagnosis and treatment of a variety of malignancies including cancer. mir-3674 putatively targets ATF3, but its expression was significantly increased in human breast cancer cells (MDA-MB231), compared to normal human mammary epithelial cells (MCF-10A). Our in silico analysis identified a few lncRNAs and circRNAs showing their putative binding sites for miR-3674. Thus, mir-3674, despite its abundance in the MDA-MB231 cells, could not effectively target ATF3, which could be due to the sponging mechanism of lncRNAs and circRNAs towards mir-3674. More extensive in vitro and in vivo studies are required to validate this and expand the diagnostic and therapeutic perspectives of breast cancer.
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Affiliation(s)
- R L Akshaya
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - N Akshaya
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - N Selvamurugan
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India.
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30
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Jin Y, Zhang S, Liu L. Circular RNA circ_C16orf62 Suppresses Cell Growth in Gastric Cancer by miR-421/Tubulin beta-2A Chain (TUBB2A) Axis. Med Sci Monit 2020; 26:e924343. [PMID: 33006960 PMCID: PMC7537480 DOI: 10.12659/msm.924343] [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] [Indexed: 01/22/2023] Open
Abstract
Background Gastric cancer (GC) is the third leading cause of cancer-associated mortality in the world. Expression of circular RNA circ_C16orf62 is reported to be low in GC. The role and mechanism of circ_C16orf62 remain unclear. Material/Methods Expression levels of circ_C16orf62 and tubulin beta-2A chain (TUBB2A) in GC tissues and cells, and microRNA-421 (miR-421) level in GC cells were detected by real-time quantitative polymerase chain reaction (RT-qPCR). The predominant cytoplasmic localization of circ_C16orf62 was identified by subcellular fractionation. The protein level of TUBB2A was detected by western blot assay. Cell proliferative ability, migration, and invasion were measured by 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT), colony formation, and several transwell assaysy. The binding relationship between miR-421 and circ_C16orf62 or TUBB2A was predicted by starBase3.0 or Targetscan, and then verified by the dual-luciferase reporter assay. The biological role ofcirc_C16orf62 was examined by xenograft tumor model in vivo. Results Circ_C16orf62 andTUBB2A were downregulated in GC tissues and cells. Circ_C16orf62 was predominantly located in the cytoplasm of GC cells, and repressed proliferation, migration, and invasion of GC cells. Mechanistically, circ_C16orf62 worked as the miR-421 sponge to upregulate TUBB2A in GC, thereby hindering GC growth. Circ_C16orf62 repressed GC tumor growth in vivo. Conclusions These findings demonstrate that circ_C16orf62 impeded proliferation, migration, and invasion in vitro and retarded tumor growth in vivo by the miR-421/TUBB2A axis in GC, providing a potential therapeutic strategy for patients with GC.
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Affiliation(s)
- Yanfeng Jin
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong, China (mainland)
| | - Shanshan Zhang
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong, China (mainland)
| | - Li Liu
- Department of Oncology, The Second Hospital of Weifang, Weifang, Shandong, China (mainland)
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Xie W, Du Z, Chen Y, Liu N, Zhong Z, Shen Y, Tang L. Identification of Metastasis-Associated Genes in Triple-Negative Breast Cancer Using Weighted Gene Co-expression Network Analysis. Evol Bioinform Online 2020; 16:1176934320954868. [PMID: 32952395 PMCID: PMC7476344 DOI: 10.1177/1176934320954868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/10/2020] [Indexed: 12/24/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is the most aggressive and fatal sub-type of breast cancer. This study aimed to identify metastasis-associated genes that could serve as biomarkers for TNBC diagnosis and prognosis. RNA-seq data and clinical information on TNBC from the Cancer Genome Atlas were used to conduct analyses. Expression data were used to establish co-expression modules using average linkage hierarchical clustering. We used weighted gene co-expression network analysis to explore the associations between gene sets and clinical features and to identify metastasis-associated candidate biomarkers. The K-M plotter website was used to explore the association between the expression of candidate biomarkers and patient survival. In addition, receiver operating characteristic curve analysis was used to illustrate the diagnostic performance of candidate genes. The pale turquoise module was significantly associated with the occurrence of metastasis. In this module, 64 genes were identified, and its functional enrichment analysis revealed that they were mainly associated with transcriptional misregulation in cancer, microRNAs in cancer, and negative regulation of angiogenesis. Further, 4 genes, IGSF10, RUNX1T1, XIST, and TSHZ2, which were negatively associated with relapse-free survival and have seldom been reported before in TNBC, were selected. In addition, the mRNA expression levels of the 4 candidate genes were significantly lower in TNBC tumor tissues compared with healthy tissues. Based on the K-M plotter, these 4 genes were correlated with poor prognosis of TNBC. The area under the curve of IGSF10, RUNX1T1, TSHZ2, and XIST was 0.918, 0.957, 0.977, and 0.749. These findings provide new insight into TNBC metastasis. IGSF10, RUNX1T1, TSHZ2, and XIST could be used as candidate biomarkers for the diagnosis and prognosis of TNBC metastasis.
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Affiliation(s)
- Wenting Xie
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
| | - Zhongshi Du
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
| | - Yijie Chen
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
| | - Naxiang Liu
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
| | - Zhaoming Zhong
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
| | - Youhong Shen
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
| | - Lina Tang
- Department of Ultrasound, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fujian Province, China
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Zhou L, Zhang Z, Huang Z, Nice E, Zou B, Huang C. Revisiting cancer hallmarks: insights from the interplay between oxidative stress and non-coding RNAs. MOLECULAR BIOMEDICINE 2020; 1:4. [PMID: 35006436 PMCID: PMC8603983 DOI: 10.1186/s43556-020-00004-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 07/21/2020] [Indexed: 02/08/2023] Open
Abstract
Cancer is one of the most common disease worldwide, with complex changes and certain traits which have been described as “The Hallmarks of Cancer.” Despite increasing studies on in-depth investigation of these hallmarks, the molecular mechanisms associated with tumorigenesis have still not yet been fully defined. Recently, accumulating evidence supports the observation that microRNAs and long noncoding RNAs (lncRNAs), two main classes of noncoding RNAs (ncRNAs), regulate most cancer hallmarks through their binding with DNA, RNA or proteins, or encoding small peptides. Reactive oxygen species (ROS), the byproducts generated during metabolic processes, are known to regulate every step of tumorigenesis by acting as second messengers in cancer cells. The disturbance in ROS homeostasis leads to a specific pathological state termed “oxidative stress”, which plays essential roles in regulation of cancer progression. In addition, the interplay between oxidative stress and ncRNAs is found to regulate the expression of multiple genes and the activation of several signaling pathways involved in cancer hallmarks, revealing a potential mechanistic relationship involving ncRNAs, oxidative stress and cancer. In this review, we provide evidence that shows the essential role of ncRNAs and the interplay between oxidative stress and ncRNAs in regulating cancer hallmarks, which may expand our understanding of ncRNAs in the cancer development from the new perspective.
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Affiliation(s)
- Li Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P.R. China
| | - Zhe Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P.R. China
| | - Zhao Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P.R. China
| | - Edouard Nice
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, 3800, Australia
| | - Bingwen Zou
- Department of Thoracic Oncology and Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China.
| | - Canhua Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P.R. China. .,School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, P.R. China.
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Zhou Y, Cheng X, Wan Y, Chen T, Zhou Q, Wang Z, Zhu H. MicroRNA-421 Inhibits Apoptosis by Downregulating Caspase-3 in Human Colorectal Cancer. Cancer Manag Res 2020; 12:7579-7587. [PMID: 32904410 PMCID: PMC7455595 DOI: 10.2147/cmar.s255787] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/29/2020] [Indexed: 01/09/2023] Open
Abstract
Purpose Dysregulated microRNAs (miRNAs/miRs) have been reported to play significant roles in pathogenesis of colorectal cancer (CRC). Previous studies have demonstrated that miR-421 regulates apoptosis in some cancers. Caspase-3 plays a key role in apoptosis, but the relationship between miR-421 and caspase-3 in CRC has not been determined. In this study, we investigated the role of miR-421 in CRC and the relationship between miR-421 and caspase-3. Methods Expression of miR-421 and caspase-3 were detected in human paired CRC cancer tissues and corresponding paracancerous tissues. In situ detection of tissue, apoptosis was performed via the TUNEL assay. HCT116 and SW480 cell lines were subjected to several in vitro experiments to explore the relationship between miRNA421 and caspase-3 during apoptosis using miR421 mimics/antagomir and luciferase reporter assay. Apoptosis was measured by determining the levels and activity of caspase-3 as well as DNA fragmentation. Luciferase reporter assay was performed to determine the potential interaction of miR-421 with caspase-3. Results The results showed that the expression of miR-421 in cancer tissues was higher than that in corresponding paracancerous tissues. Inhibition of miR-421 induced apoptosis, as shown by the upregulation of caspase-3 activity and expression as well as DNA fragmentation, which were attenuated by miR-421 mimic. We further showed that miR-421 targeted and inhibited CASP3 expression by targeting sites located in the 3ʹ-untranslated region (3ʹ-UTR) of CASP3 mRNA. Conclusion This study demonstrated an anti-apoptotic role of miR-421 in CRC and identified caspase-3 gene as a direct target of miR-421. These findings provide a potential treatment strategy using miR-421 as a therapeutic target for CRC.
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Affiliation(s)
- Yifan Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, People's Republic of China
| | - Xiaowen Cheng
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, People's Republic of China.,Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230022, People's Republic of China
| | - Yufeng Wan
- Department of Otolaryngology, The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, Anhui 238001, People's Republic of China
| | - Tingting Chen
- Department of Pathology, Anhui Medical University, Hefei, Anhui 230032, People's Republic of China
| | - Qing Zhou
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230022, People's Republic of China
| | - Zhengguang Wang
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, People's Republic of China
| | - Huaqing Zhu
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230022, People's Republic of China
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Zheng Y, Wang M, Wang S, Xu P, Deng Y, Lin S, Li N, Liu K, Zhu Y, Zhai Z, Wu Y, Dai Z, Zhu G. LncRNA MEG3 rs3087918 was associated with a decreased breast cancer risk in a Chinese population: a case-control study. BMC Cancer 2020; 20:659. [PMID: 32669097 PMCID: PMC7362410 DOI: 10.1186/s12885-020-07145-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 07/07/2020] [Indexed: 01/09/2023] Open
Abstract
Background LncRNA MEG3 expressed abnormally in various cancers including breast cancer, but no studies reported the correlation between MEG3 SNPs and breast cancer susceptibility among Chinese women. Methods This study is aimed to explore the association between three SNPs of MEG3 (rs3087918, rs7158663, rs11160608) and breast cancer. The study is a population-based case-control study including 434 breast cancer patients and 700 healthy controls. Genotyping was performed using Sequenom MassArray technique. Function prediction of rs3087918 were based on RNAfold and lncRNASNP2 databases. Results Pooled analysis indicated that rs3087918 was related to a decreased risk of breast cancer [GG vs. TT: OR (95%) = 0.67(0.45–0.99), P = 0.042; GG vs. TT + TG: OR (95%) = 0.69(0.48–0.99), P = 0.046], especially for women aged <=49 [GG vs. TT: OR (95%) = 0.40(0.22–0.73), P = 0.02]. Comparison between case groups showed genotype GG and TG/GG of rs3087918 were associated with her-2 receptor expression [GG vs. TT: OR (95%) = 2.37(1.24–4.63), P = 0.010; TG + GG vs. TT: OR (95%) = 1.50(1.01–2.24), P = 0.045]. We didn’t find statistical significance for rs11160608, rs7158663 and breast cancer. Structure prediction based on RNAfold found rs3087918 may influence the secondary structure of MEG3. The results based on lncRNASNP2 indicated that rs3087918 may gain the targets of hsa-miR-1203 to MEG3, while loss the target of hsa-miR-139-3p and hsa-miR-5091 to MEG3. Conclusions MEG3 rs3087918 was associated with a decreased risk of breast cancer. MEG3 haplotype TCG may increase the risk of breast cancer.
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Affiliation(s)
- Yi Zheng
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Meng Wang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Shuqian Wang
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Peng Xu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Yujiao Deng
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Shuai Lin
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Na Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Kang Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Yuyao Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Zhen Zhai
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Ying Wu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Zhijun Dai
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China. .,Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.
| | - Gaixia Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.
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Li H, Wang P, Liu J, Liu W, Wu X, Ding J, Kang J, Li J, Lu J, Pan G. Hypermethylation of lncRNA MEG3 impairs chemosensitivity of breast cancer cells. J Clin Lab Anal 2020; 34:e23369. [PMID: 32618397 PMCID: PMC7521317 DOI: 10.1002/jcla.23369] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 03/13/2020] [Accepted: 04/02/2020] [Indexed: 01/01/2023] Open
Abstract
Background Chemoresistance posed a barrier to successful treatment of breast cancer (BC), and lncRNA MEG3 has been documented to implicate in BC development. However, whether MEG3 methylation, which led to low MEG3 expression, was relevant to BC progression and chemoresistance remained uncertain. Methods In the aggregate, 374 pairs of tumor tissues and adjacent normal tissues were collected from pathologically confirmed BC patients, and four BC cell lines, including MDA‐MB‐231, Bcap‐37, MCF‐7, and SK‐BR‐3, were purchased. Moreover, methylation‐specific polymerase chain reaction (PCR) was adopted to evaluate the methylation status of BC tissues and cell lines, and chemo‐tolerance of BC cell lines was assessed by performing MTT assay. Concurrently, transwell assay and scratch assay were carried out to estimate the migratory and invasive capability of BC cell lines. Results Methylated MEG3, lowly expressed MEG3, large tumor size (≥2 cm), advanced TNM grade and lymphatic metastasis were potentially symbolic of poor prognosis among BC patients (P < .05). Besides, MDA‐MB‐231 cell line exhibited the strongest resistance against paclitaxel, adriamycin, and vinorelbine (P < .05), while MCF‐7 cell line seemed more sensitive against these drugs than any other BC cell line (P < .05). Furthermore, pcDNA3.1‐MEG3 and 5‐Aza‐dC markedly sensitized MDA‐MB‐231 and MCF‐7 cell lines against the drug treatments (P < .05). Simultaneously, proliferation and metastasis of the BC cell lines were slowed down under the force of pcDNA3.1‐MEG3 and 5‐Aza‐dC (P < .05). Conclusion Preventing methylation of MEG3 might matter in lessening BC chemoresistance, owing to its hindering proliferation and metastasis of BC cells.
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Affiliation(s)
- Hongchang Li
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Puhua Wang
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jiazhe Liu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Weiyan Liu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Xubo Wu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Junbin Ding
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jie Kang
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jindong Li
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jingfeng Lu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Gaofeng Pan
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
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Kansara S, Pandey V, Lobie PE, Sethi G, Garg M, Pandey AK. Mechanistic Involvement of Long Non-Coding RNAs in Oncotherapeutics Resistance in Triple-Negative Breast Cancer. Cells 2020; 9:cells9061511. [PMID: 32575858 PMCID: PMC7349003 DOI: 10.3390/cells9061511] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 02/07/2023] Open
Abstract
Triple-negative breast cancer (TNBC) is one of the most lethal forms of breast cancer (BC), with a significant disease burden worldwide. Chemoresistance and lack of targeted therapeutics are major hindrances to effective treatments in the clinic and are crucial causes of a worse prognosis and high rate of relapse/recurrence in patients diagnosed with TNBC. In the last decade, long non-coding RNAs (lncRNAs) have been found to perform a pivotal role in most cellular functions. The aberrant functional expression of lncRNAs plays an ever-increasing role in the progression of diverse malignancies, including TNBC. Therefore, lncRNAs have been recently studied as predictors and modifiers of chemoresistance. Our review discusses the potential involvement of lncRNAs in drug-resistant mechanisms commonly found in TNBC and highlights various therapeutic strategies to target lncRNAs in this malignancy.
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Affiliation(s)
- Samarth Kansara
- Amity Institute of Biotechnology, Amity University Haryana, Panchgaon, Manesar, Haryana 122413, India;
| | - Vijay Pandey
- Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518005, China; (V.P.); (P.E.L.)
- Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Peter E. Lobie
- Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518005, China; (V.P.); (P.E.L.)
- Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
- Correspondence: (G.S.); (A.K.P.)
| | - Manoj Garg
- Amity Institute of Molecular Medicine and Stem Cell Research (AIMMSCR), Amity University, Sector-125, Noida 201313, India;
| | - Amit Kumar Pandey
- Amity Institute of Biotechnology, Amity University Haryana, Panchgaon, Manesar, Haryana 122413, India;
- Correspondence: (G.S.); (A.K.P.)
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Downregulation of Microrna-421 Relieves Cerebral Ischemia/Reperfusion Injuries: Involvement of Anti-apoptotic and Antioxidant Activities. Neuromolecular Med 2020; 22:411-419. [PMID: 32385800 DOI: 10.1007/s12017-020-08600-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 04/15/2020] [Indexed: 10/24/2022]
Abstract
Reperfusion after cerebral ischemia causes additional ischemic injuries due to sudden recovery of blood supply. It usually produces excessive reactive species, mitochondrial dysfunction, oxidative stress, and cell apoptosis. Our study is designed to examine the role of miR-421 antagomir in cerebral ischemia/reperfusion injuries, as well as its underlying mechanisms. Middle cerebral artery occlusion (MCAO) model was performed with male Sprague Dawley (SD) rats for the initiation of cerebral ischemia/reperfusion injuries. Malondialdehyde (oxidative stress marker) and superoxide dismutase (antioxidant enzyme) were measured as indicators for oxidative stress. Flow cytometry was utilized to evaluate the cell apoptosis effects from miR-421. miR-421 antagomir significantly decreased neurological deficits and infarction volumes. It also downregulated malondialdehyde contents, upregulated superoxide dismutase activities, promoted the expressions of myeloid cells leukemia-1 and B cells lymphoma-2, and downregulated the expressions of Bax in the ischemic cortex. In addition, miR-421targeted MCL1 to exert its biological functions. Our study indicated the neuroprotection effects of miR-421 antagomir on cerebral I/R injuries, which involved the suppression of cell apoptosis and oxidative stress. MiR-421 might provide a new therapeutic direction for ischemia/reperfusion injuries.
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Ji Y, Feng G, Hou Y, Yu Y, Wang R, Yuan H. Long noncoding RNA MEG3 decreases the growth of head and neck squamous cell carcinoma by regulating the expression of miR-421 and E-cadherin. Cancer Med 2020; 9:3954-3963. [PMID: 32277605 PMCID: PMC7286453 DOI: 10.1002/cam4.3002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/25/2020] [Accepted: 03/03/2020] [Indexed: 01/04/2023] Open
Abstract
Background Maternally expressed 3 (MEG3), a long chain noncoding RNA (lncRNA), has verified its function as a suppressor in several kinds of cancers. However, the downstream mechanism of MEG3 in regulating the molecular mechanism of epithelial‐mesenchymal transformation (EMT) in head and neck squamous cell carcinoma (HNSCC) progression demands further investigation. Methods Quantitative real‐time polymerase chain reaction (qRT‐PCR) was used to determine the expression level of MEG3 in HNSCC and adjacent normal tissues of 51 cases. Luciferase report assay was used to detect the correlation between miR‐421 and MEG3, and miR‐421 and E‐cadherin in HNSCC cell lines. Cell invasion and proliferation capacity were assessed through transwell and CCK8 assays. Scratch wound assay was used to assess cell migration capacity. Results Firstly, this study demonstrated that the expression of MEG3 was significantly downregulated in HNSCC compared to adjacent normal tissues. Overexpressed MEG3 inhibited cell proliferation, migration, and invasion in vitro. Secondly, MEG3 upregulated the expression of E‐cadherin, which was instead downregulated by miR‐421. MiR‐421 was negatively regulated by MEG3 in HNSCC. Therefore, MEG3 regulated EMT by sponging miR‐421 targeting E‐cadherin in HNSCC. Conclusions This study indicated that the MEG3‐miR‐421‐E‐cadherin axis could be a new therapeutic target for HNSCC.
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Affiliation(s)
- Yefeng Ji
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Guanying Feng
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Yunwen Hou
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Yang Yu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Ruixia Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Hua Yuan
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
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Bi H, Wang G, Li Z, Zhou L, Zhang M, Ye J, Wang Z. Long Noncoding RNA (lncRNA) Maternally Expressed Gene 3 (MEG3) Participates in Chronic Obstructive Pulmonary Disease through Regulating Human Pulmonary Microvascular Endothelial Cell Apoptosis. Med Sci Monit 2020; 26:e920793. [PMID: 32201430 PMCID: PMC7111098 DOI: 10.12659/msm.920793] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/27/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD), a general airway disease, is featured by progressive and chronic immunoreaction in the lung. Increasing evidences have showed that cigarette smoking is the main reason in the COPD progression, and human pulmonary microvascular endothelial cell (HPMEC) apoptosis often be observed in COPD, while its pathogenesis is not yet fully described. Upregulation of long noncoding RNA (lncRNA) maternally expressed gene 3 (MEG3) was observed in COPD patients, but the specific mechanism of lncRNA MEG3 in COPD remains unknown. The objective of this research was to explore the role of lncRNA MEG3 in cigarette smoke extract (CSE)-induced HPMECs. MATERIAL AND METHODS HPMECs were induced by a series of concentrations of CSE (0%, 0.1%, 1%, and 10%). Then cell apoptosis was analyzed by flow cytometry. Cell apoptosis related proteins were tested using western blot assay. Finally, we applied knockdown and over-expression system to explore the lncRNA MEG3 functions in CSE-induced HPMECs. RESULTS Our results indicated that various concentrations of CSE (0%, 0.1%, 1%, and 10%) significantly promoted cell apoptosis, augmented caspase-3 activity, upregulated Bax expression, decreased Bcl-2 expression, and enhanced lncRNA MEG3 level in HPMECs. LncRNA MEG3-plasmid transfection resulted in the upregulation of lncRNA MEG3, more apoptotic HPMECs, and higher caspase-3 activity. While lncRNA MEG3 knockdown presented the opposite effects. Further investigation suggested that all the effects of CSE treatment on HPMECs were markedly reversed by lncRNA MEG3-shRNA (short hairpin RNA). CONCLUSIONS Our study illustrated a protective effect of lncRNA MEG3-shRNA on CSE-induced HPMECs, indicting lncRNA MEG3 can be a new therapeutic approach for COPD treatment.
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Affiliation(s)
- Hui Bi
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
| | - Gui Wang
- Department of Intensive Care Unit, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
| | - Zhiying Li
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
| | - Lin Zhou
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
| | - Ming Zhang
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
| | - Jiru Ye
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
| | - Zhigang Wang
- Department of Respiratory Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, P.R. China
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LncRNA SNHG5 regulates cell apoptosis and inflammation by miR-132/PTEN axis in COPD. Biomed Pharmacother 2020; 126:110016. [PMID: 32145584 DOI: 10.1016/j.biopha.2020.110016] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/04/2020] [Accepted: 02/12/2020] [Indexed: 12/19/2022] Open
Abstract
Long non-coding RNAs small nucleolar RNA host gene 5 (lncRNA SNHG5) plays well-defined roles in the malignant progression. However, the roles of SNHG5 in chronic obstructive pulmonary disease (COPD) progression remain unclear. In the present study, SNHG5 expression was low expressed in COPD tissues and positively correlated with low forced expiratory volume in one second (FEV1)% in patients. Subsequently, cigarette smoke extract (CSE) decreased SNHG5 expression in 16HBE cells, and SNHG5 overexpression in 16HBE cells mitigated the effects of CSE on the proliferation, apoptosis and inflammation (IL-1β, IL-6 and TNF-a). Mechanistically, SNHG5 functioned as a competing endogenous RNA (ceRNA) for miR-132 in COPD, thereby increasing the expression of the miR-132 target PTEN. Moreover, rescue assays demonstrated that PTEN suppression (or miR-132 overexpression) attenuated the effects of SNHG5 upregulation on COPD progression. In conclusion, the SNHG5-miR-132-PTEN axis might play critical roles in COPD development, providing an effective target for the treatment of COPD.
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Identification of Long Noncoding RNAs as Predictors of Survival in Triple-Negative Breast Cancer Based on Network Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8970340. [PMID: 32190687 PMCID: PMC7073484 DOI: 10.1155/2020/8970340] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/31/2019] [Accepted: 01/21/2020] [Indexed: 12/24/2022]
Abstract
Breast cancer is the most common cancer observed in adult females, worldwide. Due to the heterogeneity and varied molecular subtypes of breast cancer, the molecular mechanisms underlying carcinogenesis in different subtypes of breast cancer are distinct. Recently, long noncoding RNAs (lncRNAs) have been shown to be oncogenic or play important roles in cancer suppression and are used as biomarkers for diagnosis and therapy. In this study, we identified 134 lncRNAs and 6,414 coding genes were differentially expressed in triple-negative (TN), human epidermal growth factor receptor 2- (HER2-) positive, luminal A-positive, and luminal B-positive breast cancer. Of these, 37 lncRNAs were found to be dysregulated in all four subtypes of breast cancers. Subtypes of breast cancer special modules and lncRNA-mRNA interaction networks were constructed through weighted gene coexpression network analysis (WGCNA). Survival analysis of another public datasets was used to verify the identified lncRNAs exhibiting potential indicative roles in TN prognosis. Results from heat map analysis of the identified lncRNAs revealed that five blocks were significantly displayed. High expressions of lncRNAs, including LINC00911, CSMD2-AS1, LINC01192, SNHG19, DSCAM-AS1, PCAT4, ACVR28-AS1, and CNTFR-AS1, and low expressions of THAP9-AS1, MALAT1, TUG1, CAHM, FAM2011, NNT-AS1, COX10-AS1, and RPARP-AS1 were associated with low survival possibility in TN breast cancers. This study provides novel lncRNAs as potential biomarkers for the therapeutic and prognostic classification of different breast cancer subtypes.
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Li X, Li C, Xu Y, Yao R, Li H, Ni W, Quan R, Zhang M, Liu L, Yu S, Ullah Y, Hu R, Li Y, Guo T, Wang X, Hu S. Analysis of pituitary transcriptomics indicates that lncRNAs are involved in the regulation of sheep estrus. Funct Integr Genomics 2020; 20:563-573. [PMID: 32114660 DOI: 10.1007/s10142-020-00735-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 11/17/2019] [Accepted: 02/06/2020] [Indexed: 12/13/2022]
Abstract
Seasonal estrus is a key factor limiting animal fertility, and understanding the molecular mechanisms that regulate animal estrus is important for improving animal fertility. The pituitary gland, which is the most important endocrine gland in mammals, plays an important role in regulating the physiological processes such as growth, development, and reproduction of animals. Here, we used RNA-seq technology to study the expression profile of lncRNAs in the anterior pituitary of sheep during estrus and anestrus. In this study, we identified a total of 995 lncRNAs, of which 335 lncRNAs were differentially expressed in two states (including 38 up-regulated and 297 down-regulated lncRNAs). RT-qPCR verified the expression levels of several lncRNAs. Target predictive analysis revealed that these lncRNAs can act in cis or trans and regulate the expression of genes involved in the regulation of sheep estrus. Target gene enrichment analysis of differentially expressed lncRNAs indicates that these lncRNAs can regulate sheep estrus by regulating hormone metabolism and energy metabolism. Through our research, we provide the expression profile of lncRNAs in the pituitary of sheep, which provides a valuable resource for further understanding of the genetic regulation of seasonal estrus in sheep from the perspective of lncRNAs.
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Affiliation(s)
- Xiaoyue Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Cunyuan Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China.,College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
| | - Yueren Xu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Rui Yao
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Huixiang Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Wei Ni
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China.
| | - Renzhe Quan
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Mengdan Zhang
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Li Liu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Shuting Yu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Yaseen Ullah
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Ruirui Hu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Yaxin Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Tao Guo
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Xiaokui Wang
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
| | - Shengwei Hu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China.
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Tumor-Suppressive Function of lncRNA-MEG3 in Glioma Cells by Regulating miR-6088/SMARCB1 Axis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4309161. [PMID: 32420340 PMCID: PMC7201742 DOI: 10.1155/2020/4309161] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/17/2019] [Indexed: 02/08/2023]
Abstract
Objective Mounting evidence has elaborated the implication of long noncoding RNAs (lncRNAs) in tumorigenesis of several cancers, including glioma. However, little was known about the mechanism of lncRNA maternally expressed gene 3 (MEG3) in the development and progression of glioma. This work is designed to explore the effect of MEG3 on glioma progression and its possible mechanism. Methods Expressions of lncRNA-MEG3 and SMARCB1 were detected in human glioblastoma U87 and U251 cell lines. Gain and loss of function of MEG3 or/and miR-6088 was performed in U87 and U251 cells to observe its effect on cell proliferation and migration as well as on epithelial-mesenchymal transition (EMT) related markers. Luciferase reporter gene assay was employed to inspect the interactions among MEG3, miR-6088, and SMARCB1. Results MEG3 and SMARCB1 expressions were downregulated in glioma cells. Transfection of pcDNA3.1-MEG3 or pcDNA3.1-SMARCB1 plasmids could clearly block cell proliferation, migration, and EMT progression. MEG3 functions as a sponge for miR-6088, while SMARCB1 is a downstream protein of miR-6088. Transfection of miR-6088 mimic or si-SMARCB1 could obviously reverse the favorable effect of pcDNA3.1-MEG3 on glioma progression. Conclusion Collectively, the evidence in this study indicated that MEG3 was downregulated in glioma cells and inhibited proliferation and migration of glioma cells via regulating miR-6088/SMARCB1 axis.
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Zhang T, Hu H, Yan G, Wu T, Liu S, Chen W, Ning Y, Lu Z. Long Non-Coding RNA and Breast Cancer. Technol Cancer Res Treat 2020; 18:1533033819843889. [PMID: 30983509 PMCID: PMC6466467 DOI: 10.1177/1533033819843889] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Breast cancer, one of the most common diseases among women, is regarded as a
heterogeneous and complicated disease that remains a major public health concern.
Recently, owing to the development of next-generation sequencing technologies, long
non-coding RNAs have received extensive attention. Numerous studies reveal that long
non-coding RNAs are playing important roles in tumor development. Although the biological
function and molecular mechanisms of long non-coding RNAs remain enigmatic, recent
researchers have demonstrated that an array of long non-coding RNAs express abnormally in
cancers, including breast cancer. Herein, we summarized the latest literature about long
non-coding RNAs in breast cancer, with a particular focus on the multiple molecular roles
of regulatory long non-coding RNAs that regulate cell proliferation, invasion, metastasis,
and apoptosis.
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Affiliation(s)
- Tianzhu Zhang
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Hui Hu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ge Yan
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Tangwei Wu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuiyi Liu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,3 Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Weiqun Chen
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,3 Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,4 Key Laboratory for Molecular Diagnosis of Hubei Province, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Ning
- 2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Zhongxin Lu
- 1 Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,2 School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China.,3 Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,4 Key Laboratory for Molecular Diagnosis of Hubei Province, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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TRIP13 interference inhibits the proliferation and metastasis of thyroid cancer cells through regulating TTC5/p53 pathway and epithelial-mesenchymal transition related genes expression. Biomed Pharmacother 2019; 120:109508. [DOI: 10.1016/j.biopha.2019.109508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 09/30/2019] [Indexed: 12/31/2022] Open
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Li K, Tang J, Hou Y. LncRNA GATA6-AS inhibits cancer cell migration and invasion in gallbladder cancer by downregulating miR-421. Onco Targets Ther 2019; 12:8047-8053. [PMID: 31632058 PMCID: PMC6778446 DOI: 10.2147/ott.s212231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 07/18/2019] [Indexed: 12/04/2022] Open
Abstract
Background Long non-coding RNS (lncRNA) GATA6-AS regulates endothelial cell growth, which is involved in many types of human diseases. Purpose Our study was carried out to investigate the involvement of GATA6-AS in gallbladder cancer (GBC). Patients and methods Sixty-two patients with GBC were recruited in this study. PCR analysis was performed to determine the expression of GATA6-AS, miR-421 and TIMP-2 in tissues or cell lines. Transwell migration and invasion assay was applied. Results We found that GATA6-AS was downregulated in tumor tissues than in adjacent healthy tissues of GBC patients, and GATA6-AS expression levels in tumor tissues decreased with the increase of clinical stages. MiR-421 was upregulated in tumor tissues than in adjacent healthy tissues of GBC patients and was inversely correlated with the expression levels of GATA6-AS. MiR-421 overexpression failed to significantly affect GATA6-AS in GBC cells, while GATA6-AS overexpression resulted in inhibited miR-421 expression. GATA6-AS overexpression led to decreased migration and invasion rates of GBC cells. MiR-421 overexpression led to increased migration and invasion rates of GBC. Rescue experiments (co-transfection) showed that miR-421 overexpression led to attenuated effects of GATA6-AS overexpression. Conclusion GATA6-AS may inhibit cancer cell migration and invasion in GBC by downregulating miR-421.
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Affiliation(s)
- Kezhi Li
- Department of General Surgery, The First People's Hospital of Qujing, Qujing City, Yunnan Province 655000, People's Republic of China
| | - Jianwei Tang
- Department of General Surgery, The First People's Hospital of Qujing, Qujing City, Yunnan Province 655000, People's Republic of China
| | - Yong Hou
- Department of General Surgery, The First People's Hospital of Qujing, Qujing City, Yunnan Province 655000, People's Republic of China
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Zhao Y, Zhu Z, Shi S, Wang J, Li N. Long non-coding RNA MEG3 regulates migration and invasion of lung cancer stem cells via miR-650/SLC34A2 axis. Biomed Pharmacother 2019; 120:109457. [PMID: 31585300 DOI: 10.1016/j.biopha.2019.109457] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 09/09/2019] [Accepted: 09/12/2019] [Indexed: 12/24/2022] Open
Abstract
Long non-coding RNA maternally expressed gene 3 (MEG3) is related to the occurrence and development of non-small cell lung cancer (NSCLC). However, the function and underlying molecular mechanisms of MEG3 in lung cancer stem cells (LCSCs) are still unclear. LCSCs were determined in lung cancer cells using fluorescence-activated cell sorting (FACS). qRT-PCR and western blot were performed to examine the expressions of MEG3, miR-650, solute carrier family 34 member 2 (SLC34A2), octamer-binding transcription factor 4 (Oct4), and CD133. Sphere assay was employed to evaluate sphere-forming ability. Cell migration and invasion were analyzed by Transwell assay. The relationships among MEG3, miR-650, and SLC34A2 were validated by luciferase reporter, RIP, and RNA pulldown assays. We found MEG3 was downregulated in LCSCs. MEG3 depletion strengthened stem cell-like characteristics and sphere-forming ability in LCCs. Upregulation of MEG3 suppressed migration and invasion in LCCs and LCSCs. miR-650 was bound to MEG3 and upregulated in LCSCs. miR-650 inhibitor alleviated si-MEG3-induced promotion of stem cell-like characteristics in lung cancer cells (LCCs) H1299. Furthermore, miR-650 mimic attenuated the MEG3 upregulation-mediated inhibition of migration and invasion. In addition, SLC34A2 was a target of miR-650 and downregulated in LCSCs. miR-650 mimic induced stem cell-like characteristics in LCCs, which was weakened by overexpression of SLC34A2. In contrast, the repression of SLC34A2 mitigated the miR-650 silencing-induced inhibition of migration and invasion in LCCs and LCSCs. Besides, MEG3 regulated SLC34A2 expression by sponging miR-650. Importantly, SLC34A2 weakened MEG3-mediated stem cell-like state and cell metastasis. Our data suggested MEG3 was involved in stem cell-like state of LCCs and curbed migration and invasion through miR-650/SLC34A2 axis in NSCLC.
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Affiliation(s)
- Yongjuan Zhao
- Department of Respiratory, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Zhenxing Zhu
- Department of Hematology and Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Shaomin Shi
- Department of Respiratory, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Jing Wang
- Department of Respiratory, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Ning Li
- Department of Respiratory, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China.
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Song Z, Zhang X, Lin Y, Wei Y, Liang S, Dong C. LINC01133 inhibits breast cancer invasion and metastasis by negatively regulating SOX4 expression through EZH2. J Cell Mol Med 2019; 23:7554-7565. [PMID: 31557401 PMCID: PMC6815803 DOI: 10.1111/jcmm.14625] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/04/2019] [Accepted: 05/12/2019] [Indexed: 01/01/2023] Open
Abstract
Mounting evidence highlights long non-coding RNAs (lncRNAs) as crucial regulators in multiple types of biological processes and contributing to tumourigenesis. LINC01133, located in chromosome 1q23.2, was a recently identified novel lncRNA with a length of 1154nt. It was involved in the development of colorectal cancer and non-small cell lung cancer. However, its clinical relevance, biological functions and potential molecular mechanism in breast cancer are still unclear. In this study, we found that the LINC01133 expression was significantly down-regulated in breast cancer samples and was associated with progression and poor prognosis of breast cancer. Further experiments demonstrated that overexpression of LINC01133 inhibited invasion and metastasis in breast cancer both in vitro and in vivo. Mechanistic investigations revealed that LINC01133 repressed SOX4 expression by recruiting EZH2 to SOX4 promoter. Moreover, rescue experiments further confirmed that LINC01133 functional acted as an anti-oncogene, at least partly, via repressing SOX4 in breast cancer. Taken together, these findings imply that LINC01133 could serve as a novel prognostic biomarker and potential therapeutic target for breast cancer.
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Affiliation(s)
- Zhiwang Song
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Division of Oncology Research, Mayo Clinic, Rochester, MN, USA
| | - Xia Zhang
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yun Lin
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Youzhen Wei
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shujing Liang
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chunyan Dong
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
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Mao Q, Lv M, Li L, Sun Y, Liu S, Shen Y, Liu Z, Luo S. Long intergenic noncoding RNA 00641 inhibits breast cancer cell proliferation, migration, and invasion by sponging miR-194-5p. J Cell Physiol 2019; 235:2668-2675. [PMID: 31490021 DOI: 10.1002/jcp.29170] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 08/26/2019] [Indexed: 12/20/2022]
Abstract
Long noncoding RNAs have an essential role in the tumorigenesis of breast cancer (BC). Nonetheless, the consequences of long intergenic noncoding RNA 00641 (LINC00641) in BC remain unidentified. This study shows that LINC00641 expression level was decreased in BC tissues. LINC00641 expression level was negatively related to tumor size, lymph-node metastasis, as well as clinical stage. LINC00641 overexpression inhibited cell proliferation, migration, and invasion but stimulated apoptosis in BC cells. LINC00641 overexpression also remarkably reduced BC growth and metastasis in vivo. LINC00641 acts as a competitive endogenous RNA to sponge miR-194-5p. miR-194-5p level was higher in BC tissues and cells compared with normal-adjacent tissues and normal breast epithelial cell. miR-194-5p expression was negatively correlated with LINC00641 expression in BC tissues. miR-194-5p overexpression reversed the effects of LINC00641 on cell proliferation, cycle, apoptosis, migration, as well as invasion. In conclusion, LINC00641 inhibits BC cell proliferation, migration, as well as invasion by sponging miR-194-5p.
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Affiliation(s)
- Qixin Mao
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Minhao Lv
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lianfang Li
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yadong Sun
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Shanqing Liu
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yan Shen
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhenzhen Liu
- Department of Breast Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Suxia Luo
- Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Tumor-Derived Exosomes Mediate the Instability of Cadherins and Promote Tumor Progression. Int J Mol Sci 2019; 20:ijms20153652. [PMID: 31357383 PMCID: PMC6696460 DOI: 10.3390/ijms20153652] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 07/24/2019] [Accepted: 07/24/2019] [Indexed: 12/12/2022] Open
Abstract
Cadherins, including E-cadherin, N-cadherin, VE-cadherin, etc., are important adhesion molecules mediating intercellular junctions. The abnormal expression of cadherins is often associated with tumor development and progression. Epithelial–mesenchymal transition (EMT) is the most important step in the metastasis cascade and is accompanied by altered expression of cadherins. Recent studies reveal that as a cargo for intercellular communication, exosomes—one type of extracellular vesicles that can be secreted by tumor cells—are involved in a variety of physiological and pathological processes, especially in tumor metastasis. Tumor-derived exosomes play a crucial role in mediating the cadherin instability in recipient cells by transferring bioactive molecules (oncogenic microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), EMT-related proteins, and others), modulating their local and distant microenvironment, and facilitating cancer metastasis. In turn, aberrant expression of cadherins in carcinoma cells can also affect the biogenesis and release of exosomes. Therefore, we summarize the current research on the crosstalk between tumor-derived exosomes and aberrant cadherin signals to reveal the unique role of exosomes in cancer progression.
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