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Tabatabaei T, Rezvany MR, Ghasemi B, Vafaei F, Zadeh MK, Zaker F, Salmaninejad A. Effect of DNMT3A R882H Hot Spot Mutations on DDX43 Promoter Methylation in Acute Myeloid Leukemia. BIOMED RESEARCH INTERNATIONAL 2024; 2024:9625043. [PMID: 38807916 PMCID: PMC11132831 DOI: 10.1155/2024/9625043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/21/2024] [Accepted: 05/06/2024] [Indexed: 05/30/2024]
Abstract
Epigenetic alterations have been observed in many hematological malignancies, including acute myeloid leukemia (AML). Many of these alterations result from mutations in DNA methyl transferase (DNMT) enzymes, disabling them to methylate target genes in a proper way. In this case-control study, we investigated the association between R882H mutation in DNMT3A gene and DDX43 gene methylation in patients with AML. 47 AML patients and 6 controls were included in this study. After DNA extraction, amplification refractory mutation system (ARMS)-PCR was used to evaluate R882H mutations in DNMT3A gene. The high-resolution melting (HRM) method was used to determine the methylation changes of the DDX43 gene promoter. R882H mutation was only found in 10.6% (5 out of 47) of AML patients. The frequency of DDX43 gene methylation was significantly higher in patients without R882H mutations compared to patients with R882H mutations (P < 0.05). The DNMT3A R882H mutation is typically present in a minority of AML patients. Nevertheless, this mutation is associated with a reduced frequency of methylation in the DDX43 promoter region.
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Affiliation(s)
- Tahere Tabatabaei
- Department of Hematology and Blood Transfusion, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Rezvany
- Department of Hematology and Blood Transfusion, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Bahare Ghasemi
- Department of Hematology and Blood Transfusion, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Farzane Vafaei
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Isfahan, Iran
| | - Masoumeh Kiani Zadeh
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Farhad Zaker
- Department of Hematology and Blood Transfusion, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Arash Salmaninejad
- Regenerative Medicine, Organ Procurement and Transplantation Multi-Disciplinary Center, Razi Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Department of Medical Genetics, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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2
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Seo Y, Rhim J, Kim JH. RNA-binding proteins and exoribonucleases modulating miRNA in cancer: the enemy within. Exp Mol Med 2024; 56:1080-1106. [PMID: 38689093 PMCID: PMC11148060 DOI: 10.1038/s12276-024-01224-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 02/20/2024] [Accepted: 02/25/2024] [Indexed: 05/02/2024] Open
Abstract
Recent progress in the investigation of microRNA (miRNA) biogenesis and the miRNA processing machinery has revealed previously unknown roles of posttranscriptional regulation in gene expression. The molecular mechanistic interplay between miRNAs and their regulatory factors, RNA-binding proteins (RBPs) and exoribonucleases, has been revealed to play a critical role in tumorigenesis. Moreover, recent studies have shown that the proliferation of hepatocellular carcinoma (HCC)-causing hepatitis C virus (HCV) is also characterized by close crosstalk of a multitude of host RBPs and exoribonucleases with miR-122 and its RNA genome, suggesting the importance of the mechanistic interplay among these factors during the proliferation of HCV. This review primarily aims to comprehensively describe the well-established roles and discuss the recently discovered understanding of miRNA regulators, RBPs and exoribonucleases, in relation to various cancers and the proliferation of a representative cancer-causing RNA virus, HCV. These have also opened the door to the emerging potential for treating cancers as well as HCV infection by targeting miRNAs or their respective cellular modulators.
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Affiliation(s)
- Yoona Seo
- Cancer Molecular Biology Branch, Research Institute, National Cancer Center, Goyang, 10408, Korea
- Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, 10408, Korea
| | - Jiho Rhim
- Cancer Molecular Biology Branch, Research Institute, National Cancer Center, Goyang, 10408, Korea
- Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, 10408, Korea
| | - Jong Heon Kim
- Cancer Molecular Biology Branch, Research Institute, National Cancer Center, Goyang, 10408, Korea.
- Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, 10408, Korea.
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Liu Y, Zhou G, Song L, Wen Q, Xie S, Chen L, Wang L, Xie X, Chen X, Pu Y, Chen G. DEAD-Box Helicase 17 Promotes Amyloidogenesis by Regulating BACE1 Translation. Brain Sci 2023; 13:brainsci13050745. [PMID: 37239217 DOI: 10.3390/brainsci13050745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/17/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023] Open
Abstract
Amyloidogenesis is one of the key pathophysiological changes in Alzheimer's disease (AD). Accumulation of the toxic Aβ results from the catalytic processing of β-amyloid precursor protein (APP) associated β-amyloid converting enzyme 1 (BACE1) activity. It is reported that dead-box helicase 17 (DDX17) controls RNA metabolism and is involved in the development of multiple diseases. However, whether DDX17 might play a role in amyloidogenesis has not been documented. In the present study, we found that DDX17 protein level was significantly increased in HEK and SH-SY5Y cells that stably express full-length APP (HEK-APP and Y5Y-APP) and in the brain of APP/PS1 mice, an animal model of AD. DDX17 knockdown, as opposed to DDX17 overexpression, markedly reduced the protein levels of BACE1 and the β-amyloid peptide (Aβ) in Y5Y-APP cells. We further found that DDX17-mediated enhancement of BACE1 was selectively attenuated by translation inhibitors. Specifically, DDX17 selectively interacted with the 5' untranslated region (5'UTR) of BACE1 mRNA, and deletion of the 5'UTR abolished the effect of DDX17 on luciferase activity or protein level of BACE1. Here, we show that the enhanced expression of DDX17 in AD was associated with amyloidogenesis; through the 5'UTR-dependent BACE1 translation, DDX17 might serve as an important mediator contributing to the progression of AD.
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Affiliation(s)
- Yue Liu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Guifeng Zhou
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Li Song
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Qixin Wen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Shiqi Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Long Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Lu Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Xiaoyong Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Xue Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Yalan Pu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
| | - Guojun Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China
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Tabassum S, Basu M, Ghosh MK. The DEAD-box RNA helicase DDX5 (p68) and β-catenin: The crucial regulators of FOXM1 gene expression in arbitrating colorectal cancer. BIOCHIMICA ET BIOPHYSICA ACTA (BBA) - GENE REGULATORY MECHANISMS 2023; 1866:194933. [PMID: 36997114 DOI: 10.1016/j.bbagrm.2023.194933] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 02/23/2023] [Accepted: 03/22/2023] [Indexed: 03/31/2023]
Abstract
Forkhead box M1 (FOXM1), a vital member of the Forkhead box family of transcription factors, helps in mediating oncogenesis. However, limited knowledge exists regarding the mechanistic insights into the FOXM1 gene regulation. DDX5 (p68), an archetypal member of the DEAD-box family of RNA helicases, shows multifaceted action in cancer progression by arbitrating RNA metabolism and transcriptionally coactivating transcription factors. Here, we report a novel mechanism of alliance between DDX5 (p68) and the Wnt/β-catenin pathway in regulating FOXM1 gene expression and driving colon carcinogenesis. Initial bioinformatic analyses highlighted elevated expression levels of FOXM1 and DDX5 (p68) in colorectal cancer datasets. Immunohistochemical assays confirmed that FOXM1 showed a positive correlation with DDX5 (p68) and β-catenin in both normal and colon carcinoma patient samples. Overexpression of DDX5 (p68) and β-catenin increased the protein and mRNA expression profiles of FOXM1, and the converse correlation occurred during downregulation. Mechanistically, overexpression and knockdown of DDX5 (p68) and β-catenin elevated and diminished FOXM1 promoter activity respectively. Additionally, Chromatin immunoprecipitation assay demonstrated the occupancy of DDX5 (p68) and β-catenin at the TCF4/LEF binding element (TBE) sites on the FOXM1 promoter. Thiostrepton delineated the effect of FOXM1 inhibition on cell proliferation and migration. Colony formation assay, migration assay, and cell cycle data reveal the importance of the DDX5 (p68)/β-catenin/FOXM1 axis in oncogenesis. Collectively, our study mechanistically highlights the regulation of FOXM1 gene expression by DDX5 (p68) and β-catenin in colorectal cancer.
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Sun S, Xu K, Yan M, Cui J, Zhu K, Yang Y, Zhang X, Tang W, Huang X, Dou L, Chen B, Lin Y, Zhang X, Man Y, Li J, Shen T. Delphinidin induces autophagic flux blockage and apoptosis by inhibiting both multidrug resistance gene 1 and DEAD-box helicase 17 expressions in liver cancer cells. J Pharm Pharmacol 2023; 75:253-263. [PMID: 36179123 DOI: 10.1093/jpp/rgac037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 05/10/2022] [Indexed: 11/12/2022]
Abstract
OBJECTIVES To investigate the function and regulatory mechanisms of delphinidin in the treatment of hepatocellular carcinoma. METHODS HepG2 and HuH-7 cells were treated with different concentrations of delphinidin. Cell viability was analysed by 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The cell autophagy and autophagic flux were analysed by LC3b-green fluorescent protein (GFP)-Adv and LC3b-GFP-monomeric red fluorescent protein-Adv transfected HepG2 and HuH-7 cells, respectively. Cell apoptosis was analysed by Hoechst33342 staining, terminal deoxynucleotidyl transferase dUTP nick end labeling staining and DNA laddering. Cell autophagy, apoptosis and survival related protein expressions were detected by Western blotting. KEY FINDINGS After treatment with different concentrations of delphinidin, the cell survival rate was significantly decreased. Delphinidin could block the autophagic flux, resulting in a significant increase in autophagosomes, and led to an increase in cell apoptosis. The combined application of delphinidin and cisplatin could promote the antitumour effect and reduce the dose of cisplatin in tumour cells. Further mechanism studies reveal that delphinidin could inhibit the multidrug resistance gene 1 (MDR1) and the tumour-promoting transcription cofactor DEAD-box helicase 17 (DDX17) expression in tumour cells. Overexpression of DDX17 could reverse delphinidin's antitumor function in tumour cells. CONCLUSIONS Delphinidin has a strong anti-tumour effect by inducing tumour cell autophagic flux blockage and apoptosis by inhibiting of both MDR1 and DDX17 expression.
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Affiliation(s)
- Shenghui Sun
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Kun Xu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Mingjing Yan
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Ju Cui
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Kaiyi Zhu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Yao Yang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Xiaoyi Zhang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Weiqing Tang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Xiuqing Huang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Lin Dou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Beidong Chen
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Yajun Lin
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Xiyue Zhang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Yong Man
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Jian Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Tao Shen
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
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Jin C, Han-Hua D, Qiu-Meng L, Deng N, Peng-Chen D, Jie M, Lei X, Xue-Wu Z, Hui-Fang L, Yan C, Xiao-Ping C, Bi-Xiang Z. MTDH-stabilized DDX17 promotes tumor initiation and progression through interacting with YB1 to induce EGFR transcription in Hepatocellular Carcinoma. Oncogene 2023; 42:169-183. [PMID: 36385375 DOI: 10.1038/s41388-022-02545-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 11/01/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022]
Abstract
Metadherin (MTDH) is a well-established oncogene in various cancers including Hepatocellular Carcinoma (HCC). However, the precise mechanism through which MTDH promotes cancer-related signaling pathways in HCC remains unknown. In this study, we identified DDX17 as a novel binding partner of MTDH. Furthermore, MTDH increased the protein level of DDX17 by inhibiting its ubiquitination. We confirmed that DDX17 was a novel oncogene, with dramatically upregulated expression in HCC tissues. The increased expression of DDX17 was closely associated with vascular invasion, TNM stage, BCLC stage, and poor prognosis. In vitro and in vivo tests demonstrated that DDX17, a downstream target of MTDH, played a crucial role in tumor initiation and progression. Mechanistically, DDX17 acted as a transcriptional regulator that interacted with Y-box binding protein 1 (YB1) in the nucleus, which in turn drove the binding of YB1 to its target epidermal growth factor receptor (EGFR) gene promoter to increase its transcription. This in turn increased expression of EGFR and the activation of the downstream MEK/pERK signaling pathway. Our results identify DDX17, stabilized by MTDH, as a powerful oncogene in HCC and suggest that the DDX17/YB1/EGFR axis contributes to tumorigenesis and metastasis of HCC.
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Affiliation(s)
- Chen Jin
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong Han-Hua
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liu Qiu-Meng
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ning Deng
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Du Peng-Chen
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mo Jie
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xu Lei
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhang Xue-Wu
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liang Hui-Fang
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Yan
- General Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Chen Xiao-Ping
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Key Laboratory of Organ Transplantation, Ministry of Education; Key Laboratory of Organ Transplantation, National Health Commission; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.
| | - Zhang Bi-Xiang
- Hepatic Surgery Center, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Hubei key laboratory of hepato-pancreato-biliary diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Key Laboratory of Organ Transplantation, Ministry of Education; Key Laboratory of Organ Transplantation, National Health Commission; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.
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DDX17 promotes the growth and metastasis of lung adenocarcinoma. Cell Death Dis 2022; 8:425. [PMID: 36273228 PMCID: PMC9588018 DOI: 10.1038/s41420-022-01215-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 11/08/2022]
Abstract
DEAD box RNA helicase 17 (DDX17) has been shown to be an RNA binding protein involved in RNA metabolism and associated with cancer progression. However, the biological role of DDX17 in the pathogenesis of lung adenocarcinoma (LUAD) has not been well characterized. Here, we demonstrated that DDX17 promoted the proliferation, migration and invasion of H1299 and A549 lung adenocarcinoma cells. Analyses of public datasets showed that DDX17 is upregulated in LUAD specimens. Our tumor xenograft models confirmed the in vivo promoting role of DDX17 in the growth and metastasis of LUAD. Mechanistic analyses further revealed that DDX17 protein interacts with the mRNA of MYL9 and MAGEA6 and upregulates their levels. MYL9 could mediate the function of DDX17 to regulate the actin cytoskeleton rearrangement and cell adhesion, particularly by modulating the stress fiber and focal adhesion formation, whereas DDX17 might inhibit the autophagy process through MAGEA6/AMPKα1 axis in LUAD cells. Collectively, our study revealed the oncogenic role and pathways of DDX17 in LUAD.
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Chen S, Wang Y, Li D, Wang H, Zhao X, Yang J, Chen L, Guo M, Zhao J, Chen C, Zhou Y, Liang G, Xu L. Mechanisms Controlling MicroRNA Expression in Tumor. Cells 2022; 11:cells11182852. [PMID: 36139427 PMCID: PMC9496884 DOI: 10.3390/cells11182852] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRNAs) are widely present in many organisms and regulate the expression of genes in various biological processes such as cell differentiation, metabolism, and development. Numerous studies have shown that miRNAs are abnormally expressed in tumor tissues and are closely associated with tumorigenesis. MiRNA-based cancer gene therapy has consistently shown promising anti-tumor effects and is recognized as a new field in cancer treatment. So far, some clinical trials involving the treatment of malignancies have been carried out; however, studies of miRNA-based cancer gene therapy are still proceeding slowly. Therefore, furthering our understanding of the regulatory mechanisms of miRNA can bring substantial benefits to the development of miRNA-based gene therapy or other combination therapies and the clinical outcome of patients with cancer. Recent studies have revealed that the aberrant expression of miRNA in tumors is associated with promoter sequence mutation, epigenetic alteration, aberrant RNA modification, etc., showing the complexity of aberrant expression mechanisms of miRNA in tumors. In this paper, we systematically summarized the regulation mechanisms of miRNA expression in tumors, with the aim of providing assistance in the subsequent elucidation of the role of miRNA in tumorigenesis and the development of new strategies for tumor prevention and treatment.
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Affiliation(s)
- Shipeng Chen
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Ya Wang
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Dongmei Li
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Hui Wang
- The Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Xu Zhao
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Jing Yang
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Longqing Chen
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Mengmeng Guo
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Juanjuan Zhao
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Chao Chen
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
| | - Ya Zhou
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Medical Physics, Zunyi Medical University, Zunyi 563000, China
- Correspondence: (Y.Z.); (G.L.); (L.X.)
| | - Guiyou Liang
- Department of Cardiovascular Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang 550031, China
- Department of Cardiovascular Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
- Correspondence: (Y.Z.); (G.L.); (L.X.)
| | - Lin Xu
- Special Key Laboratory of Gene Detection and Therapy & Base for Talents in Biotherapy of Guizhou Province, Zunyi 563000, China
- Department of Immunology, Zunyi Medical University, Zunyi 563000, China
- Correspondence: (Y.Z.); (G.L.); (L.X.)
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Xu K, Sun S, Yan M, Cui J, Yang Y, Li W, Huang X, Dou L, Chen B, Tang W, Lan M, Li J, Shen T. DDX5 and DDX17—multifaceted proteins in the regulation of tumorigenesis and tumor progression. Front Oncol 2022; 12:943032. [PMID: 35992805 PMCID: PMC9382309 DOI: 10.3389/fonc.2022.943032] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/07/2022] [Indexed: 12/15/2022] Open
Abstract
DEAD-box (DDX)5 and DDX17, which belong to the DEAD-box RNA helicase family, are nuclear and cytoplasmic shuttle proteins. These proteins are expressed in most tissues and cells and participate in the regulation of normal physiological functions; their abnormal expression is closely related to tumorigenesis and tumor progression. DDX5/DDX17 participate in almost all processes of RNA metabolism, such as the alternative splicing of mRNA, biogenesis of microRNAs (miRNAs) and ribosomes, degradation of mRNA, interaction with long noncoding RNAs (lncRNAs) and coregulation of transcriptional activity. Moreover, different posttranslational modifications, such as phosphorylation, acetylation, ubiquitination, and sumoylation, endow DDX5/DDX17 with different functions in tumorigenesis and tumor progression. Indeed, DDX5 and DDX17 also interact with multiple key tumor-promoting molecules and participate in tumorigenesis and tumor progression signaling pathways. When DDX5/DDX17 expression or their posttranslational modification is dysregulated, the normal cellular signaling network collapses, leading to many pathological states, including tumorigenesis and tumor development. This review mainly discusses the molecular structure features and biological functions of DDX5/DDX17 and their effects on tumorigenesis and tumor progression, as well as their potential clinical application for tumor treatment.
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Affiliation(s)
- Kun Xu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Shenghui Sun
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Mingjing Yan
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Ju Cui
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Yao Yang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Wenlin Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Xiuqing Huang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Lin Dou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Beidong Chen
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Weiqing Tang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Ming Lan
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Jian Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Tao Shen
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
- *Correspondence: Tao Shen,
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Zhang X, An T, Zhang X, Shen T, Li H, Dou L, Huang X, Man Y, Tang W, Li J. DDX17 protects hepatocytes against oleic acid/palmitic acid-induced lipid accumulation. Biochem Biophys Res Commun 2022; 612:169-175. [DOI: 10.1016/j.bbrc.2022.04.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 04/27/2022] [Indexed: 11/26/2022]
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11
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Cui S, Zhang Y, Xing L, Li R, Piao Y, Liu H. Circular RNA dehydrodolichyl diphosphate synthase facilitated triple-negative breast cancer progression via miR-362-3p/DDX5 axis. ENVIRONMENTAL TOXICOLOGY 2022; 37:1483-1494. [PMID: 35343646 DOI: 10.1002/tox.23500] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 12/25/2021] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) is a common hypotype of breast cancer. Circular RNAs (circRNAs) are burgeoning serve as vital controllers in numerous tumors. Nevertheless, the expression and regulatory mode of circRNAs in TNBC are still indistinct. This paper aimed to reveal the function and molecular mechanism of circular RNA dehydrodolichyl diphosphate synthase (circDHDDS) in TNBC. METHODS The contents of circDHDDS, DHDDS mRNA, microRNA-362-3p (miR-362-3p) and DEAD (Asp-Glu-Ala-Asp) box polypeptide 5 (DDX5) were indicated by quantitative real-time polymerase chain reaction (qRT-PCR) and western blot. The colony formation assay and 5-ethynyl-2'-deoxyuridine (EdU) assay were executed to assess cell proliferation. The flow cytometry assay was utilized to detect cell apoptosis. The transwell assay and tube formation assay were applied to measure cell migration, invasion and angiogenesis. The targeted relationships of miR-362-3p and circDHDDS or DDX5 were forecasted and detected by dual-luciferase reporter assay. The in vivo test was implemented to confirm the effect of circDHDDS. RESULTS The contents of circDHDDS and DDX5 were increased, and miR-362-3p level was decreased in TNBC. CircDHDDS deficiency reserved cell proliferation, migration, invasion and angiogenesis, while facilitated cell apoptosis in TNBC cells. Furthermore, miR-362-3p was validated to exert a tumor repressive effect in TNBC cells by suppressing DDX5. Moreover, DDX5 could regulate the development of TNBC. The experimental data exposed that levels of miR-362-3p presented noteworthy negative correlation with circDHDDS and DDX5, while circDHDDS and DDX5 exhibited significant positive correlation. In mechanism, circDHDDS bound to miR-362-3p to modulate DDX5 expression. In addition, circDHDDS knock-down also attenuated tumor growth. CONCLUSION CircDHDDS expedited TNBC by swelling DDX5 via adapting miR-362-3p.
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Affiliation(s)
- Suping Cui
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- The Key Laboratory of Head and Neck Molecular Pathological Diagnosis, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yong Zhang
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- The Key Laboratory of Head and Neck Molecular Pathological Diagnosis, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Li Xing
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- The Key Laboratory of Head and Neck Molecular Pathological Diagnosis, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Rui Li
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- The Key Laboratory of Head and Neck Molecular Pathological Diagnosis, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yingshi Piao
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- The Key Laboratory of Head and Neck Molecular Pathological Diagnosis, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Honggang Liu
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- The Key Laboratory of Head and Neck Molecular Pathological Diagnosis, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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12
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Tabassum S, Ghosh MK. DEAD-box RNA helicases with special reference to p68: Unwinding their biology, versatility, and therapeutic opportunity in cancer. Genes Dis 2022. [DOI: 10.1016/j.gendis.2022.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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13
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Li Y, Xing Y, Wang X, Hu B, Zhao X, Zhang H, Han F, Geng N, Wang F, Li Y, Li J, Jin F, Li F. PAK5 promotes RNA helicase DDX5 sumoylation and miRNA-10b processing in a kinase-dependent manner in breast cancer. Cell Rep 2021; 37:110127. [PMID: 34936874 DOI: 10.1016/j.celrep.2021.110127] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 09/28/2021] [Accepted: 11/23/2021] [Indexed: 01/15/2023] Open
Abstract
P21-activated kinase 5 (PAK5) plays an important role in tumors. However, the functional role of PAK5 in mammary tumorigenesis in vivo remains unclear. Here, we show that PAK5 deficiency represses MMTV-PyVT-driven breast tumorigenesis. DEAD-box RNA helicase 5 (DDX5) is a substrate of PAK5, which is phosphorylated on threonine 69. PAK5-mediated DDX5 phosphorylation promotes breast cancer cell proliferation and metastasis. The increased expression levels of PAK5 and phospho-DDX5 threonine 69 are associated with metastasis and poor clinical outcomes of patients. PAK5 facilitates the phosphorylation-dependent sumoylation of DDX5 to stabilize DDX5. Both the phosphorylation and sumoylation of DDX5 enhance the formation of a DDX5/Drosha/DGCR8 complex, thus promoting microRNA-10b processing. Finally, we verify decreased expression of DDX5 phosphorylation and sumoylation and mature miR-10b in PAK5-/-/MMTV-PyVT transgenic mice. Our findings provide insights into the function of PAK5 in microRNA (miRNA) biogenesis, which might be a potential therapeutic target for breast cancer.
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Affiliation(s)
- Yang Li
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Yao Xing
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Xu Wang
- Department of Breast Surgery, Department of Surgical Oncology, Research Unit of General Surgery, The First Affiliated Hospital of China Medical University, No. 155, North Nanjing Street, Heping District, Shenyang, Liaoning 110001, China
| | - Bingtao Hu
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Xin Zhao
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Hongyan Zhang
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Fuyi Han
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Nanxi Geng
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Fei Wang
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Yanshu Li
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Jiabin Li
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China
| | - Feng Jin
- Department of Breast Surgery, Department of Surgical Oncology, Research Unit of General Surgery, The First Affiliated Hospital of China Medical University, No. 155, North Nanjing Street, Heping District, Shenyang, Liaoning 110001, China.
| | - Feng Li
- Department of Cell Biology, Key Laboratory of Cell Biology, National Health Commission of the PRC and Key Laboratory of Medical Cell Biology, Ministry of Education of the PRC, China Medical University, No. 77, Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China.
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Fortuna TR, Kour S, Anderson EN, Ward C, Rajasundaram D, Donnelly CJ, Hermann A, Wyne H, Shewmaker F, Pandey UB. DDX17 is involved in DNA damage repair and modifies FUS toxicity in an RGG-domain dependent manner. Acta Neuropathol 2021; 142:515-536. [PMID: 34061233 DOI: 10.1007/s00401-021-02333-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/07/2021] [Accepted: 05/24/2021] [Indexed: 12/12/2022]
Abstract
Mutations in the RNA binding protein, Fused in Sarcoma (FUS), lead to amyotrophic lateral sclerosis (ALS), the most frequent form of motor neuron disease. Cytoplasmic aggregation and defective DNA repair machinery are etiologically linked to mutant FUS-associated ALS. Although FUS is involved in numerous aspects of RNA processing, little is understood about the pathophysiological mechanisms of mutant FUS. Here, we employed RNA-sequencing technology in Drosophila brains expressing FUS to identify significantly altered genes and pathways involved in FUS-mediated neurodegeneration. We observed the expression levels of DEAD-Box Helicase 17 (DDX17) to be significantly downregulated in response to mutant FUS in Drosophila and human cell lines. Mutant FUS recruits nuclear DDX17 into cytoplasmic stress granules and physically interacts with DDX17 through the RGG1 domain of FUS. Ectopic expression of DDX17 reduces cytoplasmic mislocalization and sequestration of mutant FUS into cytoplasmic stress granules. We identified DDX17 as a novel regulator of the DNA damage response pathway whose upregulation repairs defective DNA damage repair machinery caused by mutant neuronal FUS ALS. In addition, we show DDX17 is a novel modifier of FUS-mediated neurodegeneration in vivo. Our findings indicate DDX17 is downregulated in response to mutant FUS, and restoration of DDX17 levels suppresses FUS-mediated neuropathogenesis and toxicity in vivo.
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Liu X, Chen D, Chen H, Wang W, Liu Y, Wang Y, Duan C, Ning Z, Guo X, Otkur W, Liu J, Qi H, Liu X, Lin A, Xia T, Liu H, Piao H. YB1 regulates miR-205/200b-ZEB1 axis by inhibiting microRNA maturation in hepatocellular carcinoma. Cancer Commun (Lond) 2021; 41:576-595. [PMID: 34110104 PMCID: PMC8286141 DOI: 10.1002/cac2.12164] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/15/2021] [Accepted: 05/05/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Y-box binding protein 1 (YB1 or YBX1) plays a critical role in tumorigenesis and cancer progression. However, whether YB1 affects malignant transformation by modulating non-coding RNAs remains largely unknown. This study aimed to investigate the relationship between YB1 and microRNAs and reveal the underlying mechanism by which YB1 impacts on tumor malignancy via miRNAs-mediated regulatory network. METHODS The biological functions of YB1 in hepatocellular carcinoma (HCC) cells were investigated by cell proliferation, wound healing, and transwell invasion assays. The miRNAs dysregulated by YB1 were screened by microarray analysis in HCC cell lines. The regulation of YB1 on miR-205 and miR-200b was determined by quantitative real-time PCR, dual-luciferase reporter assay, RNA immunoprecipitation, and pull-down assay. The relationships of YB1, DGCR8, Dicer, TUT4, and TUT1 were identified by pull-down and coimmunoprecipitation experiments. The cellular co-localization of YB1, DGCR8, and Dicer were detected by immunofluorescent staining. The in vivo effect of YB1 on tumor metastasis was determined by injecting MHCC97H cells transduced with YB1 shRNA or shControl via the tail vein in nude BALB/c mice. The expression levels of epithelial to mesenchymal transition markers were detected by immunoblotting and immunohistochemistry assays. RESULTS YB1 promoted HCC cell migration and tumor metastasis by regulating miR-205/200b-ZEB1 axis partially in a Snail-independent manner. YB1 suppressed miR-205 and miR-200b maturation by interacting with the microprocessors DGCR8 and Dicer as well as TUT4 and TUT1 via the conserved cold shock domain. Subsequently, the downregulation of miR-205 and miR-200b enhanced ZEB1 expression, thus leading to increased cell migration and invasion. Furthermore, statistical analyses on gene expression data from HCC and normal liver tissues showed that YB1 expression was positively associated with ZEB1 expression and remarkably correlated with clinical prognosis. CONCLUSION This study reveals a previously undescribed mechanism by which YB1 promotes cancer progression by regulating the miR-205/200b-ZEB1 axis in HCC cells. Furthermore, these results highlight that YB1 may play biological functions via miRNAs-mediated gene regulation, and it can serve as a potential therapeutic target in human cancers.
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Affiliation(s)
- Xiumei Liu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Di Chen
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Huan Chen
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Wen Wang
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Yu Liu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
- Department of Thoracic SurgeryLiaoning Cancer Hospital & InstituteCancer Hospital of China Medical UniversityShenyangLiaoning110042P. R. China
| | - Yawei Wang
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
- Department of Thoracic SurgeryLiaoning Cancer Hospital & InstituteCancer Hospital of China Medical UniversityShenyangLiaoning110042P. R. China
| | - Chao Duan
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
- Department of Thoracic SurgeryLiaoning Cancer Hospital & InstituteCancer Hospital of China Medical UniversityShenyangLiaoning110042P. R. China
| | - Zhen Ning
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Dalian Medical UniversityDalian Medical UniversityDalianLiaoning116000P. R. China
| | - Xin Guo
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Dalian Medical UniversityDalian Medical UniversityDalianLiaoning116000P. R. China
| | - Wuxiyar Otkur
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Jing Liu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Huan Qi
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Xiaolong Liu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Aifu Lin
- MOE Laboratory of Biosystem Homeostasis and ProtectionCollege of Life SciencesZhejiang UniversityHangzhouZhejiang310058P. R. China
| | - Tian Xia
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
| | - Hong‐xu Liu
- Department of Thoracic SurgeryLiaoning Cancer Hospital & InstituteCancer Hospital of China Medical UniversityShenyangLiaoning110042P. R. China
| | - Hai‐long Piao
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023P. R. China
- Department of Biochemistry & Molecular BiologySchool of Life SciencesChina Medical UniversityShenyangLiaoning110122P. R. China
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Xia Q, Cui G, Fan Y, Wang X, Hu G, Wang L, Luo X, Yang L, Cai Q, Xu K, Guo W, Gao M, Li Y, Wu J, Li W, Chen J, Qi H, Peng G, Yao H. RNA helicase DDX5 acts as a critical regulator for survival of neonatal mouse gonocytes. Cell Prolif 2021; 54:e13000. [PMID: 33666296 PMCID: PMC8088469 DOI: 10.1111/cpr.13000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES Mammalian spermatogenesis is a biological process of male gamete formation. Gonocytes are the only precursors of spermatogonial stem cells (SSCs) which develop into mature spermatozoa. DDX5 is one of DEAD-box RNA helicases and expresses in male germ cells, suggesting that Ddx5 plays important functions during spermatogenesis. Here, we explore the functions of Ddx5 in regulating the specification of gonocytes. MATERIALS AND METHODS Germ cell-specific Ddx5 knockout (Ddx5-/- ) mice were generated. The morphology of testes and epididymides and fertility in both wild-type and Ddx5-/- mice were analysed. Single-cell RNA sequencing (scRNA-seq) was used to profile the transcriptome in testes from wild-type and Ddx5-/- mice at postnatal day (P) 2. Dysregulated genes were validated by single-cell qRT-PCR and immunofluorescent staining. RESULTS In male mice, Ddx5 was expressed in germ cells at different stages of development. Germ cell-specific Ddx5 knockout adult male mice were sterile due to completely devoid of germ cells. Male germ cells gradually disappeared in Ddx5-/- mice from E18.5 to P6. Single-cell transcriptome analysis showed that genes involved in cell cycle and glial cell line-derived neurotrophic factor (GDNF) pathway were significantly decreased in Ddx5-deficient gonocytes. Notably, Ddx5 ablation impeded the proliferation of gonocytes. CONCLUSIONS Our study reveals the critical roles of Ddx5 in fate determination of gonocytes, offering a novel insight into the pathogenesis of male sterility.
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Song YK, Seol YH, Kim MJ, Jeong JW, Choi HI, Lee SW, Chae YJ, Ahn S, Gong YD, Lee KR, Koo TS. Pharmacokinetic Characterization of Supinoxin and Its Physiologically Based Pharmacokinetic Modeling in Rats. Pharmaceutics 2021; 13:pharmaceutics13030373. [PMID: 33799884 PMCID: PMC7998731 DOI: 10.3390/pharmaceutics13030373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 11/23/2022] Open
Abstract
Supinoxin is a novel anticancer drug candidate targeting the Y593 phospho-p68 RNA helicase, by exhibiting antiproliferative activity and/or suppression of tumor growth. This study aimed to characterize the in vitro and in vivo pharmacokinetics of supinoxin and attempt physiologically based pharmacokinetic (PBPK) modeling in rats. Supinoxin has good permeability, comparable to that of metoprolol (high permeability compound) in Caco-2 cells, with negligible net absorptive or secretory transport observed. After an intravenous injection at a dose range of 0.5–5 mg/kg, the terminal half-life (i.e., 2.54–2.80 h), systemic clearance (i.e., 691–865 mL/h/kg), and steady state volume of distribution (i.e., 2040–3500 mL/kg) of supinoxin remained unchanged, suggesting dose-independent (i.e., dose-proportional) pharmacokinetics for the dose ranges studied. After oral administration, supinoxin showed modest absorption with an absolute oral bioavailability of 56.9–57.4%. The fecal recovery following intravenous and oral administration was 16.5% and 46.8%, respectively, whereas the urinary recoveries in both administration routes were negligible. Supinoxin was mainly eliminated via NADPH-dependent phase I metabolism (i.e., 58.5% of total clearance), while UDPGA-dependent phase II metabolism appeared negligible in the rat liver microsome. Supinoxin was most abundantly distributed in the adipose tissue, gut, and liver among the nine major tissues studied (i.e., the brain, liver, kidneys, heart, lungs, spleen, gut, muscles, and adipose tissue), and the tissue exposure profiles of supinoxin were well predicted with physiologically based pharmacokinetics.
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Affiliation(s)
- Yoo-Kyung Song
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup 28116, Korea; (Y.-K.S.); (M.J.K.); (J.-W.J.)
| | - Yun-Hwan Seol
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 34134, Korea; (Y.-H.S.); (H.-I.C.); (S.-W.L.)
| | - Min Ju Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup 28116, Korea; (Y.-K.S.); (M.J.K.); (J.-W.J.)
| | - Jong-Woo Jeong
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup 28116, Korea; (Y.-K.S.); (M.J.K.); (J.-W.J.)
| | - Hae-In Choi
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 34134, Korea; (Y.-H.S.); (H.-I.C.); (S.-W.L.)
| | - Seung-Won Lee
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 34134, Korea; (Y.-H.S.); (H.-I.C.); (S.-W.L.)
| | - Yoon-Jee Chae
- College of Pharmacy, Woosuk University, Wanju-Gun 55338, Korea;
| | - Sunjoo Ahn
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea;
| | - Young-Dae Gong
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, Seoul 04620, Korea;
| | - Kyeong-Ryoon Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup 28116, Korea; (Y.-K.S.); (M.J.K.); (J.-W.J.)
- Correspondence: (K.-R.L.); (T.-S.K.)
| | - Tae-Sung Koo
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 34134, Korea; (Y.-H.S.); (H.-I.C.); (S.-W.L.)
- Correspondence: (K.-R.L.); (T.-S.K.)
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The DEAD-box protein family of RNA helicases: sentinels for a myriad of cellular functions with emerging roles in tumorigenesis. Int J Clin Oncol 2021; 26:795-825. [PMID: 33656655 DOI: 10.1007/s10147-021-01892-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/20/2021] [Indexed: 02/06/2023]
Abstract
DEAD-box RNA helicases comprise a family within helicase superfamily 2 and make up the largest group of RNA helicases. They are a profoundly conserved family of RNA-binding proteins, carrying a generic Asp-Glu-Ala-Asp (D-E-A-D) motif that gives the family its name. Members of the DEAD-box family of RNA helicases are engaged in all facets of RNA metabolism from biogenesis to decay. DEAD-box proteins ordinarily function as constituents of enormous multi-protein complexes and it is believed that interactions with other components in the complexes might be answerable for the various capacities ascribed to these proteins. Therefore, their exact function is probably impacted by their interacting partners and to be profoundly context dependent. This may give a clarification to the occasionally inconsistent reports proposing that DEAD-box proteins have both pro- and anti-proliferative functions in cancer. There is emerging evidence that DEAD-box family of RNA helicases play pivotal functions in various cellular processes and in numerous cases have been embroiled in cellular proliferation and/or neoplastic transformation. In various malignancy types, DEAD-box RNA helicases have been reported to possess pro-proliferation or even oncogenic roles as well as anti-proliferative or tumor suppressor functions. Clarifying the exact function of DEAD-box helicases in cancer is probably intricate, and relies upon the cellular milieu and interacting factors. This review aims to summarize the current data on the numerous capacities that have been ascribed to DEAD-box RNA helicases. It also highlights their diverse actions upon malignant transformation in the various tumor types.
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19
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Zhang J, Guo JR, Wu XL, Wang X, Zhu ZM, Wang Y, Gu X, Fan Y. TWIST1 induces phenotypic switching of vascular smooth muscle cells by downregulating p68 and microRNA-143/145. FEBS Open Bio 2021; 11:932-943. [PMID: 33470057 PMCID: PMC7931233 DOI: 10.1002/2211-5463.13092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/04/2021] [Indexed: 11/29/2022] Open
Abstract
TWIST1 is an important basic helix‐loop‐helix protein linked to multiple physiological and pathological processes. Although TWIST1 is believed to be involved in vascular pathogenesis, its effects on homeostasis of smooth muscle cells (SMCs) remain poorly understood. Here, we show that TWIST1 protein levels were significantly elevated during SMC phenotypic switching in vivo and in vitro. TWIST1 overexpression promoted phenotypic switching of SMCs, while siRNA targeting of TWIST1 prevented cell transition. Mechanistically, TWIST1 decreased the level of microRNA‐143/145, which governs smooth muscle marker gene transcription. In addition, TWIST1 repressed p68 mRNA and protein expression, a crucial modulator of SMC behavior and microRNA biogenesis. Our co‐immunoprecipitation assay demonstrated a previously unrecognized molecular interaction between TWIST1 and p68 protein. Finally, we found that TWIST1 triggered SMC phenotypic switching and suppressed microRNA‐143/145 expression by promoting the proteasomal degradation of p68. These data suggest a novel role of TWIST1 in the regulation of SMC homeostasis by modulating p68/microRNA‐143/145 axis.
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Affiliation(s)
- Jing Zhang
- Department of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jie-Ru Guo
- Department of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xian-Li Wu
- Department of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xia Wang
- Department of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Ming Zhu
- Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yong Wang
- Department of Cardiovascular Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xia Gu
- Department of Pathology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ye Fan
- Department of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing, China
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20
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Qiu Y, Zhao Y, Wang H, Liu W, Jin C, Xu W. Simvastatin suppresses renal cell carcinoma cells by regulating DDX5/DUSP5. Scand J Urol 2021; 55:337-343. [PMID: 33517812 DOI: 10.1080/21681805.2021.1876163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Renal cell carcinoma (RCC) has the highest mortality rate of genitourinary cancers and the incidence of RCC has risen steadily. Simvastatin has been reported to exhibit anti-tumor activity in a variety of cancers; however, its roles and molecular mechanisms in RCC remain unclear. Our aim was to evaluate the inhibitory effect of simvastatin on RCC. METHODS We used a variety of methods to test the changes of RCC cell lines' viability, migration, invasion, cell cycle and apoptosis after treatment with simvastatin. RESULTS We found that simvastatin not only inhibited RCC cell viability, migration, and invasion, but also regulated the cell cycle and induced apoptosis. We also observed abnormal expression of DDX5 and DUSP5 in RCC cell lines. Mechanistic investigation showed that simvastatin significantly suppressed DDX5 and promoted DUSP5 expression. CONCLUSION Together, these results provide a novel mechanism underlying simvastatin-induced inhibition of RCC via regulation of the DDX5/DUSP5 axis.
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Affiliation(s)
- Yu Qiu
- Department of Urology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yakun Zhao
- Department of Urology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Haipng Wang
- Department of Urology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Liu
- Department of Urology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chengluo Jin
- Department of Urology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wanhai Xu
- Department of Urology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
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21
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Cui Y, Hunt A, Li Z, Birkin E, Lane J, Ruge F, Jiang WG. Lead DEAD/H box helicase biomarkers with the therapeutic potential identified by integrated bioinformatic approaches in lung cancer. Comput Struct Biotechnol J 2020; 19:261-278. [PMID: 33425256 PMCID: PMC7779375 DOI: 10.1016/j.csbj.2020.12.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/02/2020] [Accepted: 12/08/2020] [Indexed: 02/07/2023] Open
Abstract
DEAD/H box helicases are implicated in lung cancer but have not been systematically investigated for their clinical significance and function. In this study, we aimed to evaluate the potential of DEAD/H box helicases as prognostic biomarkers and therapeutic targets in lung cancer by integrated bioinformatic analysis of multivariate large-scale databases. Survival and differential expression analysis of these helicases enabled us to identify four biomarkers with the most significant alterations. These were found to be the negative prognostic factors DDX11, DDX55 and DDX56, and positive prognostic factor DDX5. Pathway enrichment analysis indicates that MYC signalling is negatively associated with expression levels of the DDX5 gene while positively associated with that of DDX11, DDX55 and DDX56. High expression levels of the DDX5 gene is associated with low mutation levels of TP53 and MUC16, the two most frequently mutated genes in lung cancer. In contrast, high expression levels of DDX11, DDX55 and DDX56 genes are associated with high levels of TP53 and MUC16 mutation. The tumour-infiltrated CD8 + T and B cells positively correlate with levels of DDX5 gene expression, while negatively correlate with that of the other three DEAD box helicases, respectively. Moreover, the DDX5-associated miRNA profile is distinguished from the miRNA profiles of DDX11, DDX55 and DDX56, although each DDX has a different miRNA signature. The identification of these four DDX helicases as biomarkers will be valuable for prognostic prediction and targeted therapeutic development in lung cancer.
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Affiliation(s)
- Yuxin Cui
- Cardiff China Research Collaborative, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Adam Hunt
- Cardiff China Research Collaborative, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Zhilei Li
- Department of Pharmacy, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, PR China
| | - Emily Birkin
- Cardiff & Vale University Health Board, University Hospital of Wales, Heath Park, Cardiff CF14 4XW, UK
| | - Jane Lane
- Cardiff China Research Collaborative, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Fiona Ruge
- Cardiff China Research Collaborative, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Wen G Jiang
- Cardiff China Research Collaborative, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
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22
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Ahn YH, Ko YH. Diagnostic and Therapeutic Implications of microRNAs in Non-Small Cell Lung Cancer. Int J Mol Sci 2020; 21:E8782. [PMID: 33233641 PMCID: PMC7699705 DOI: 10.3390/ijms21228782] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 02/07/2023] Open
Abstract
microRNAs (miRNAs), endogenous suppressors of target mRNAs, are deeply involved in every step of non-small cell lung cancer (NSCLC) development, from tumor initiation to progression and metastasis. They play roles in cell proliferation, apoptosis, angiogenesis, epithelial-to-mesenchymal transition, migration, invasion, and metastatic colonization, as well as immunosuppression. Due to their versatility, numerous attempts have been made to use miRNAs for clinical applications. miRNAs can be used as cancer subtype classifiers, diagnostic markers, drug-response predictors, prognostic markers, and therapeutic targets in NSCLC. Many challenges remain ahead of their actual clinical application; however, when achieved, the use of miRNAs in the clinic is expected to enable great progress in the diagnosis and treatment of patients with NSCLC.
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MESH Headings
- Antineoplastic Agents/therapeutic use
- Biomarkers, Pharmacological/analysis
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/immunology
- Carcinoma, Non-Small-Cell Lung/diagnosis
- Carcinoma, Non-Small-Cell Lung/drug therapy
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/immunology
- Cell Line, Tumor
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Epithelial-Mesenchymal Transition/drug effects
- Epithelial-Mesenchymal Transition/genetics
- Epithelial-Mesenchymal Transition/immunology
- Gene Expression Regulation, Neoplastic
- Humans
- Lung Neoplasms/diagnosis
- Lung Neoplasms/drug therapy
- Lung Neoplasms/genetics
- Lung Neoplasms/immunology
- Lymphatic Metastasis
- MicroRNAs/agonists
- MicroRNAs/antagonists & inhibitors
- MicroRNAs/genetics
- MicroRNAs/immunology
- Neovascularization, Pathologic/diagnosis
- Neovascularization, Pathologic/drug therapy
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/immunology
- Prognosis
- RNA, Messenger/genetics
- RNA, Messenger/immunology
- Signal Transduction
- Tumor Escape/drug effects
- Tumor Escape/genetics
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Affiliation(s)
- Young-Ho Ahn
- Department of Molecular Medicine, College of Medicine, Ewha Womans University, Seoul 07804, Korea
- Inflammation-Cancer Microenvironment Research Center, College of Medicine, Ewha Womans University, Seoul 07804, Korea
| | - Yoon Ho Ko
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
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23
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Abbasi N, Long T, Li Y, Yee BA, Cho BS, Hernandez JE, Ma E, Patel PR, Sahoo D, Sayed IM, Varki N, Das S, Ghosh P, Yeo GW, Huang WJM. DDX5 promotes oncogene C3 and FABP1 expressions and drives intestinal inflammation and tumorigenesis. Life Sci Alliance 2020; 3:e202000772. [PMID: 32817263 PMCID: PMC7441524 DOI: 10.26508/lsa.202000772] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 12/12/2022] Open
Abstract
Tumorigenesis in different segments of the intestinal tract involves tissue-specific oncogenic drivers. In the colon, complement component 3 (C3) activation is a major contributor to inflammation and malignancies. By contrast, tumorigenesis in the small intestine involves fatty acid-binding protein 1 (FABP1). However, little is known of the upstream mechanisms driving their expressions in different segments of the intestinal tract. Here, we report that the RNA-binding protein DDX5 binds to the mRNA transcripts of C3 and Fabp1 to augment their expressions posttranscriptionally. Knocking out DDX5 in epithelial cells protected mice from intestinal tumorigenesis and dextran sodium sulfate (DSS)-induced colitis. Identification of DDX5 as a common upstream regulator of tissue-specific oncogenic molecules provides an excellent therapeutic target for intestinal diseases.
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Affiliation(s)
- Nazia Abbasi
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Tianyun Long
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Yuxin Li
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Brian A Yee
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Benjamin S Cho
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Juan E Hernandez
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Evelyn Ma
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Parth R Patel
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Debashis Sahoo
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
| | - Ibrahim M Sayed
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Nissi Varki
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Soumita Das
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Pradipta Ghosh
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Gene W Yeo
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Wendy Jia Men Huang
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
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24
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Hashemi V, Ahmadi A, Malakotikhah F, Chaleshtari MG, Baghi Moornani M, Masjedi A, Sojoodi M, Atyabi F, Nikkhoo A, Rostami N, Baradaran B, Azizi G, Yousefi B, Ghalamfarsa G, Jadidi-Niaragh F. Silencing of p68 and STAT3 synergistically diminishes cancer progression. Life Sci 2020; 249:117499. [PMID: 32142763 DOI: 10.1016/j.lfs.2020.117499] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 12/22/2022]
Abstract
AIMS Since several factors are involved in the tumorigenesis process, targeting only one factor most probably cannot overwhelm cancer progression. Therefore, it seems that combination therapy through targeting more than one cancer-related factor may lead to cancer control. The expression and function of p68 (DDX5; DEAD-Box Helicase 5) are dysregulated in various cancers. P68 is also a co-activator of many oncogenic transcription factors such as the signal transducer and activator of transcription-3 (STAT3), which contributes to cancer progression. This close connection between p68 and STAT3 plays an important role in the growth and development of cancer. MATERIALS AND METHODS We decided to suppress the p68/STAT3 axis in various cancer cells by using Polyethylene glycol-trimethyl Chitosan-Hyaluronic acid (PEG-TMC-HA) nanoparticles (NPs) loaded with siRNA molecules. We assessed the impact of this combination therapy on apoptosis, proliferation, angiogenesis, and tumor growth, both in vitro and in vivo. KEY FINDINGS The results showed that siRNA-loaded NPs notably suppressed the expression of p68/STAT3 axis in cancer cells, which was associated with blockade of tumor growth, colony formation, angiogenesis, and cancer cell migration. In addition to apoptosis induction, this combined therapy also reduced the expression of several tumor-promoting factors including Fibroblast growth factors (FGF), vascular endothelial growth factor (VEGF), transforming growth factor-β (TGF-β), matrix metallopeptidases-2 (MMP-2), MMP-9, hypoxia-inducible factor-(HIF-1α), interleukin-6 (IL-6), IL-33, Bcl-x, vimentin, and snail. SIGNIFICANCE These findings indicate the potential of this nano-based anti-cancer therapeutic strategy for efficient cancer therapy which should be further investigated in future studies.
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Affiliation(s)
- Vida Hashemi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Armin Ahmadi
- Department of Chemical and Materials Engineering, The University of Alabama in Huntsville, AL 35899, USA
| | | | | | | | - Ali Masjedi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mozhdeh Sojoodi
- Division of Surgical Oncology, Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston, USA
| | - Fatemeh Atyabi
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1714614411, Iran
| | - Afshin Nikkhoo
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Narges Rostami
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Bahman Yousefi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ghasem Ghalamfarsa
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Farhad Jadidi-Niaragh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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25
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Han K, Wang FW, Cao CH, Ling H, Chen JW, Chen RX, Feng ZH, Luo J, Jin XH, Duan JL, Li SM, Ma NF, Yun JP, Guan XY, Pan ZZ, Lan P, Xu RH, Xie D. CircLONP2 enhances colorectal carcinoma invasion and metastasis through modulating the maturation and exosomal dissemination of microRNA-17. Mol Cancer 2020; 19:60. [PMID: 32188489 PMCID: PMC7079398 DOI: 10.1186/s12943-020-01184-8] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/12/2020] [Indexed: 02/07/2023] Open
Abstract
Background Metastasis causes the vast majority of colorectal carcinoma (CRC)-related deaths. However, little is known about the specific traits and underlying mechanisms of metastasis-initiating cells in primary CRC. And whether or not circular RNAs (circRNAs) take part in this particular event remain not adequately stated yet. Methods A screening method based on Transwell assay was first applied to build CRC subgroups with different metastatic potential. High throughput RNA sequencing was used to find out novel metastatic drivers in CRC metastasis-initiating step. A series of in vitro and in vivo assays were further applied to elucidate the functions and underlying molecular mechanisms of circRNAs in CRC metastasis. Results A circRNA consisting of exon 8–11 of LONP2, termed as circLONP2, was upregulated in metastasis-initiating CRC subgroups. Aberrant higher expression of circLONP2 was observed in primary CRC tissues with established metastasis, and along the invasive margin in metastatic site. High expression of circLONP2 predicted unfavorable overall survival. Functional studies revealed that circLONP2 could enhance the invasiveness of CRC cells in vitro, and targeting circLONP2 through anti-sense oligonucleotide (ASO) dramatically reduced the penetrance of metastasis to foreign organs in vivo. Mechanically, circLONP2 directly interacted with and promoted the processing of primary microRNA-17 (pri-miR-17), through recruiting DiGeorge syndrome critical region gene 8 (DGCR8) and Drosha complex in DDX1-dependent manner. Meanwhile, upregulated mature miR-17-5p could be assembled into exosomes and internalized by neighboring cells to enhance their aggressiveness. Conclusions Our data indicate that circLONP2 acts as key metastasis-initiating molecule during CRC progression through modulating the intracellular maturation and intercellular transfer of miR-17, resulting in dissemination of metastasis-initiating ability in primary site and acceleration of metastasis formation in foreign organs. circLONP2 could serve as an effective prognostic predictor and/or novel anti-metastasis therapeutic target in CRC treatment.
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Affiliation(s)
- Kai Han
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Feng-Wei Wang
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Chen-Hui Cao
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Han Ling
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jie-Wei Chen
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ri-Xin Chen
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Zi-Hao Feng
- Department of Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jie Luo
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Xiao-Han Jin
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jin-Ling Duan
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Shu-Man Li
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Ning-Fang Ma
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Jing-Ping Yun
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xin-Yuan Guan
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Clinical Oncology, the University of Hong Kong, Hong Kong, China
| | - Zhi-Zhong Pan
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ping Lan
- Department of Colorectal Surgery, the Six Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Rui-Hua Xu
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Dan Xie
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China. .,Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China.
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26
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Luo Q, Que T, Luo H, Meng Y, Chen X, Huang H, Hu R, Luo K, Zheng C, Yan P, Gong J, Fu H, Liu J, Tang Q, Huang G. Upregulation of DEAD box helicase 5 and 17 are correlated with the progression and poor prognosis in gliomas. Pathol Res Pract 2020; 216:152828. [PMID: 32008867 DOI: 10.1016/j.prp.2020.152828] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 12/16/2019] [Accepted: 01/18/2020] [Indexed: 12/19/2022]
Abstract
Recent researches indicated Ddx5 and Ddx17 play crucial roles in tumorigenesis. However, the study of Ddx5 and Ddx17 in glioma remains a little. Our study investigated their expression in glioma and evaluated its association with clinical factors and prognostic significance. The expression of Ddx5 and Ddx17 were both upregulated in glioma tissues compared to normal brain tissues, and a significant positive correlation between Ddx5 and Ddx17 expression was identified by statistical analysis. Immunohistochemical staining verified the expression of Ddx5 and Ddx17 in peritumoral zone was lower than that in core zone but higher than normal brain tissues. Moreover, the increased expression of Ddx5 and Ddx17 was markedly correlated with WHO Grade and histological type, and high Ddx5 and Ddx17 were found to be significantly associated with the worse overall survival of glioma patients. In additional, higher expression of both Ddx5 and Ddx17 predicted shorter clinical survival time for high-grade glioma patients with radiotherapy or with chemotherapy. In conclusion, overexpressed Ddx5 and Ddx17 are involved in the clinical progression and poor prognosis of glioma patients, suggesting that their upregulation can be used as a reliable clinical predictor for tumor diagnosis and to predict survival in patients with glioma.
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Affiliation(s)
- Qisheng Luo
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Tianshi Que
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Hongcheng Luo
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Yiliang Meng
- Department of Oncology, Baise People's Hospital, Guangxi, Baise 533000, Guangxi, China
| | - Xiaoping Chen
- Department of Neurology, Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, Guangxi, China; Guangxi Medical University Graduate School, Nanning 530021, Guangxi, China
| | - Haineng Huang
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Rentong Hu
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Kunxiang Luo
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Chuanhua Zheng
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Peng Yan
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Juxin Gong
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
| | - Huangde Fu
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China.
| | - Jia Liu
- Department of Orthopedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China.
| | - Qianli Tang
- Department of Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China; College of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan, China.
| | - Guanglong Huang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China.
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27
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Zhao X, Li D, Yang F, Lian H, Wang J, Wang X, Fang E, Song H, Hu A, Guo Y, Liu Y, Li H, Chen Y, Huang K, Zheng L, Tong Q. Long Noncoding RNA NHEG1 Drives β-Catenin Transactivation and Neuroblastoma Progression through Interacting with DDX5. Mol Ther 2020; 28:946-962. [PMID: 31982037 DOI: 10.1016/j.ymthe.2019.12.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 12/18/2019] [Accepted: 12/27/2019] [Indexed: 12/11/2022] Open
Abstract
Recent studies suggest that long noncoding RNAs (lncRNAs) play essential roles in tumor progression. However, the functional roles and underlying mechanisms of lncRNAs in neuroblastoma (NB), the most common malignant solid tumor in pediatric population, still remain elusive. Herein, through integrating analysis of a public RNA sequencing dataset, neuroblastoma highly expressed 1 (NHEG1) was identified as a risk-associated lncRNA, contributing to an unfavorable outcome of NB. Depletion of NHEG1 led to facilitated differentiation and decreased growth and aggressiveness of NB cells. Mechanistically, NHEG1 bound to and stabilized DEAD-box helicase 5 (DDX5) protein through repressing proteasome-mediated degradation, resulting in β-catenin transactivation that altered target gene expression associated with NB progression. We further determined a lymphoid enhancer binding factor 1 (LEF1)/transcription factor 7-like 2 (TCF7L2)/NHEG1/DDX5/β-catenin axis with a positive feedback loop and demonstrated that NHEG1 harbored oncogenic properties via its interplay with DDX5. Administration of small interfering RNAs against NHEG1 or DDX5 reduced tumor growth and prolonged survival of nude mice bearing xenografts. High NHEG1 or DDX5 expression was associated with poor survival of NB patients. These results indicate that lncRNA NHEG1 exhibits oncogenic activity that affects NB progression via stabilizing the DDX5 protein, which might serve as a potential therapeutic target for NB.
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Affiliation(s)
- Xiang Zhao
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Feng Yang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Heng Lian
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Jianqun Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Xiaojing Wang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Anpei Hu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Yanhua Guo
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Yang Liu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Hongjun Li
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Yajun Chen
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China
| | - Liduan Zheng
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China; Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China.
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China; Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, P.R. China.
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28
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Ngo TD, Partin AC, Nam Y. RNA Specificity and Autoregulation of DDX17, a Modulator of MicroRNA Biogenesis. Cell Rep 2019; 29:4024-4035.e5. [PMID: 31851931 PMCID: PMC6953907 DOI: 10.1016/j.celrep.2019.11.059] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/03/2019] [Accepted: 11/14/2019] [Indexed: 11/23/2022] Open
Abstract
DDX17, a DEAD-box ATPase, is a multifunctional helicase important for various RNA functions, including microRNA maturation. Key questions for DDX17 include how it recognizes target RNAs and influences their structures, as well as how its ATPase activity may be regulated. Through crystal structures and biochemical assays, we show the ability of the core catalytic domains of DDX17 to recognize specific sequences in target RNAs. The RNA sequence preference of the catalytic core is critical for DDX17 to directly bind and remodel a specific region of primary microRNAs 3' to the mature sequence, and consequently enhance processing by Drosha. Furthermore, we identify an intramolecular interaction between the N-terminal tail and the DEAD domain of DDX17 to have an autoregulatory role in controlling the ATPase activity. Thus, we provide the molecular basis for how cognate RNA recognition and functional outcomes are linked for DDX17.
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Affiliation(s)
- Tri D Ngo
- Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Reproductive Biology Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Alexander C Partin
- Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Reproductive Biology Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yunsun Nam
- Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Reproductive Biology Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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29
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Lambert MP, Terrone S, Giraud G, Benoit-Pilven C, Cluet D, Combaret V, Mortreux F, Auboeuf D, Bourgeois CF. The RNA helicase DDX17 controls the transcriptional activity of REST and the expression of proneural microRNAs in neuronal differentiation. Nucleic Acids Res 2019; 46:7686-7700. [PMID: 29931089 PMCID: PMC6125624 DOI: 10.1093/nar/gky545] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 06/04/2018] [Indexed: 12/22/2022] Open
Abstract
The Repressor Element 1-silencing transcription factor (REST) represses a number of neuronal genes in non-neuronal cells or in undifferentiated neural progenitors. Here, we report that the DEAD box RNA helicase DDX17 controls important REST-related processes that are critical during the early phases of neuronal differentiation. First, DDX17 associates with REST, promotes its binding to the promoter of a subset of REST-targeted genes and co-regulates REST transcriptional repression activity. During neuronal differentiation, we observed a downregulation of DDX17 along with that of the REST complex that contributes to the activation of neuronal genes. Second, DDX17 and its paralog DDX5 regulate the expression of several proneural microRNAs that are known to target the REST complex during neurogenesis, including miR-26a/b that are also direct regulators of DDX17 expression. In this context, we propose a new mechanism by which RNA helicases can control the biogenesis of intronic miRNAs. We show that the processing of the miR-26a2 precursor is dependent on RNA helicases, owing to an intronic regulatory region that negatively impacts on both miRNA processing and splicing of its host intron. Our work places DDX17 in the heart of a pathway involving REST and miRNAs that allows neuronal gene repression.
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Affiliation(s)
- Marie-Pierre Lambert
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - Sophie Terrone
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - Guillaume Giraud
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - Clara Benoit-Pilven
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - David Cluet
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - Valérie Combaret
- Laboratoire de Recherche Translationnelle, Centre Léon Bérard, F-69008 Lyon, France
| | - Franck Mortreux
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - Didier Auboeuf
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
| | - Cyril F Bourgeois
- Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, INSERM U1210, CNRS UMR 5239, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
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30
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Sundaram GM. Dietary non-coding RNAs from plants: Fairy tale or treasure? Noncoding RNA Res 2019; 4:63-68. [PMID: 31193509 PMCID: PMC6533053 DOI: 10.1016/j.ncrna.2019.02.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/26/2018] [Accepted: 02/13/2019] [Indexed: 12/15/2022] Open
Abstract
The past two decades have witnessed soaring interest in the field of non-coding RNAs, largely attributed by its regulatory role in controlling two third of human transcriptional output. Though, there are several classes of non-coding RNAs found in nature, microRNAs takes the central stage because of their pleiotropic roles. In particular, extracellular microRNAs are gaining traction due to their relative stability and bio availability. Extracellular microRNAs has been shown to occur in all living organisms, including dietary plants. Some of the recent reports suggest that these dietary microRNAs pass through the gut, enter systemic circulation and exert biological effects on animal physiology. However, evidences against this hypothesis are also presented in literature and hence this area has been strongly debated. In this review, I will briefly summarise the evidences accumulated for and against this hypothesis and discuss potential implications of such findings in human health.
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Affiliation(s)
- Gopinath M. Sundaram
- Department of Biochemistry, Central Food Technological Research Institute, Mysore, 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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31
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Endogenous interaction profiling identifies DDX5 as an oncogenic coactivator of transcription factor Fra-1. Oncogene 2019; 38:5725-5738. [PMID: 31015574 DOI: 10.1038/s41388-019-0824-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 03/11/2019] [Accepted: 04/02/2019] [Indexed: 01/06/2023]
Abstract
Fra-1, a member of the activator protein 1 (AP-1) family, is overexpressed in triple-negative breast cancer (TNBC) and plays crucial roles in tumor growth. Here we report the identification of 118 proteins interacting with endogenous chromatin-bound Fra-1 in TNBC cells, highlighting DDX5 as the most enriched Fra-1-interacting protein. DDX5, a previously unrecognized protein in the Fra-1 transcriptional network, shows extensive overlap with Fra-1 cistrome and transcriptome that are highly associated with the TNBC cell growth. We provide evidence that DDX5 expression enhances Fra-1 transcriptional activity and potentiates Fra-1-driven cell proliferation. Furthermore, we show that the DDX5 target gene signature predicts poor clinical outcome in breast cancer patients. DDX5 protein level was higher in triple-negative basal-like tumors than in non-basal-like tumors, including luminal A, luminal B, and HER2-enriched subtypes. Collectively, by combining proteomic and genomic approaches we reveal a role for DDX5 as a regulatory protein of Fra-1 signaling and suggest DDX5 as a potential therapeutic target for TNBC.
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32
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Roles of DDX5 in the tumorigenesis, proliferation, differentiation, metastasis and pathway regulation of human malignancies. Biochim Biophys Acta Rev Cancer 2019; 1871:85-98. [DOI: 10.1016/j.bbcan.2018.11.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 02/07/2023]
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33
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Xing Z, Ma WK, Tran EJ. The DDX5/Dbp2 subfamily of DEAD-box RNA helicases. WILEY INTERDISCIPLINARY REVIEWS-RNA 2018; 10:e1519. [PMID: 30506978 DOI: 10.1002/wrna.1519] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/26/2018] [Accepted: 11/01/2018] [Indexed: 01/05/2023]
Abstract
The mammalian DEAD-box RNA helicase DDX5, its paralog DDX17, and their orthologs in Saccharomyces cerevisiae and Drosophila melanogaster, namely Dbp2 and Rm62, define a subfamily of DEAD-box proteins. Members from this subfamily share highly conserved protein sequences and cellular functions. They are involved in multiple steps of RNA metabolism including mRNA processing, microRNA processing, ribosome biogenesis, RNA decay, and regulation of long noncoding RNA activities. The DDX5/Dbp2 subfamily is also implicated in transcription regulation, cellular signaling pathways, and energy metabolism. One emerging theme underlying the diverse cellular functions is that the DDX5/Dbp2 subfamily of DEAD-box helicases act as chaperones for complexes formed by RNA molecules and proteins (RNP) in vivo. This RNP chaperone activity governs the functions of various RNA species through their lifetime. Importantly, mammalian DDX5 and DDX17 are involved in cancer progression when overexpressed through alteration of transcription and signaling pathways, meaning that they are possible targets for cancer therapy. This article is categorized under: RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications RNA Structure and Dynamics > Influence of RNA Structure in Biological Systems RNA Interactions with Proteins and Other Molecules > RNA-Protein Complexes.
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Affiliation(s)
- Zheng Xing
- Department of Biochemistry, Purdue University, West Lafayette, Indiana.,Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana
| | - Wai Kit Ma
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Elizabeth J Tran
- Department of Biochemistry, Purdue University, West Lafayette, Indiana.,Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana
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34
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Wu N, Jiang M, Han Y, Liu H, Chu Y, Liu H, Cao J, Hou Q, Zhao Y, Xu B, Xie X. O-GlcNAcylation promotes colorectal cancer progression by regulating protein stability and potential catcinogenic function of DDX5. J Cell Mol Med 2018; 23:1354-1362. [PMID: 30484950 PMCID: PMC6349181 DOI: 10.1111/jcmm.14038] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/11/2018] [Accepted: 10/26/2018] [Indexed: 12/11/2022] Open
Abstract
The RNA helicase p68 (DDX5), a key player in RNA metabolism, belongs to the DEAD box family and is involved in the development of colorectal cancer. Here, we found both DDX5 and O‐GlcNAcylation are up‐regulated in colorectal cancer. In addition, DDX5 protein level is significantly positively correlated with the expression of O‐GlcNAcylation. Although it was known DDX5 protein could be regulated by post‐translational modification (PTM), how O‐GlcNAcylation modification regulated of DDX5 remains unclear. Here we show that DDX5 interacts directly with OGT in the SW480 cell line, which is the only known enzyme that catalyses O‐GlcNAcylation in humans. Meanwhile, O‐GlcNAcylation could promote DDX5 protein stability. The OGT‐DDX5 axis affects colorectal cancer progression mainly by regulating activation of the AKT/mTOR signalling pathway. Taken together, these results indicated that OGT‐mediated O‐GlcNAcylation stabilizes DDX5, promoting activation of the AKT/mTOR signalling pathway, thus accelerating colorectal cancer progression. This study not only reveals the novel functional of O‐GlcNAcylation in regulating DDX5, but also reveals the carcinogenic effect of the OGT‐DDX5 axis in colorectal cancer.
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Affiliation(s)
- Nan Wu
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Mingzuo Jiang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Air Force Medical University (Fourth Military Medical University), Xi'an, Shaanxi, China
| | - Yuying Han
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Haiming Liu
- College of Computer Science and Technology, Jilin University, Changchun, Jilin, China
| | - Yi Chu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Air Force Medical University (Fourth Military Medical University), Xi'an, Shaanxi, China
| | - Hao Liu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Air Force Medical University (Fourth Military Medical University), Xi'an, Shaanxi, China
| | - Jiayi Cao
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Qiuqiu Hou
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Yu Zhao
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Bing Xu
- Department of Gastroenterology, Second Affiliated Hospital of Xi'an Jiao tong University, Xi'an, Shaanxi, China
| | - Xin Xie
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, Xi'an, Shaanxi, China
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35
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Hashemi V, Masjedi A, Hazhir-Karzar B, Tanomand A, Shotorbani SS, Hojjat-Farsangi M, Ghalamfarsa G, Azizi G, Anvari E, Baradaran B, Jadidi-Niaragh F. The role of DEAD-box RNA helicase p68 (DDX5) in the development and treatment of breast cancer. J Cell Physiol 2018; 234:5478-5487. [PMID: 30417346 DOI: 10.1002/jcp.26912] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/13/2018] [Indexed: 12/13/2022]
Abstract
RNA helicase p68 or DEAD (Asp-Glu-Ala-Asp) box polypeptide 5 (DDX5) is a unique member of the highly conserved protein family, which is involved in a broad spectrum of biological processes, including transcription, translation, precursor messenger RNA processing or alternative splicing, and microRNA (miRNA) processing. It has been shown that p68 is necessary for cell growth and participates in the early development and maturation of some organs. Interestingly, p68 is a transcriptional coactivator of numerous oncogenic transcription factors, including nuclear factor-κβ (NF-κβ), estrogen receptor α (ERα), β-catenin, androgen receptor, Notch transcriptional activation complex, p53 and signal transducer, and activator of transcription 3 (STAT3). Recent studies on the role of p68 (DDX5) in multiple dysregulated cellular processes in various cancers and its abnormal expression indicate the importance of this factor in tumor development. Discussion of the precise role of p68 in cancer is complex and depends on the cellular microenvironment and interacting factors. In terms of the deregulated expression of p68 in breast cancer and the high prevalence of this cancer among women, it can be informative to review the precise function of this factor in the breast cancer. Therefore, an attempt will be made in this review to clarify the tumorigenic function of p68 in association with its targeting potential for the treatment of breast cancer.
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Affiliation(s)
- Vida Hashemi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Basic Sciences, Faculty of Medicine, Maragheh University of Medical Science, Maragheh, Iran
| | - Ali Masjedi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bita Hazhir-Karzar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Asghar Tanomand
- Department of Basic Sciences, Faculty of Medicine, Maragheh University of Medical Science, Maragheh, Iran
| | | | - Mohammad Hojjat-Farsangi
- Department of Oncology-Pathology, Immune and Gene therapy Lab, Cancer Center Karolinska (CCK), Karolinska University Hospital Solna and Karolinska Institute, Stockholm, Sweden.,Department of Immunology, School of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Ghasem Ghalamfarsa
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Enayat Anvari
- Department of Physiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhad Jadidi-Niaragh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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36
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Dai L, Pan G, Liu X, Huang J, Jiang Z, Zhu X, Gan X, Xu Q, Tan N. High expression of ALDOA and DDX5 are associated with poor prognosis in human colorectal cancer. Cancer Manag Res 2018; 10:1799-1806. [PMID: 29988738 PMCID: PMC6029611 DOI: 10.2147/cmar.s157925] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Purpose The identification of prognostic markers for colorectal cancer (CRC) is needed for clinical practice. Fructose-bisphosphate aldolase A (ALDOA) and DEAD box p68 RNA helicase (DDX5) are commonly overexpressed in cancer and correlate with tumorigenesis. However, association between expression of ALDOA and DDX5, and CRC outcome has not been reported. Patients and methods We used 141 formalin-fixed paraffin-embedded (FFPE) specimens collected from 105 patients with CRC treated at the Affiliated Hospital of Guilin Medical University and the People’s Hospital of Liuzhou. We performed tissue microarray based immunohistochemistry to explore expression features and prognostic value (overall survival, OS; disease-free survival, [DFS]) of ALDOA and DDX5 in CRC tissues. The prognostic values were evaluated using Kaplan–Meier analysis, and Cox regression analyses. Results ALDOA and DDX5 were highly expressed in CRC tissues and liver metastatic CRC tissues compared with normal glandular epithelium tissues (all p<0.05). Interestingly, primary CRC tissues highly expressing ALDOA or DDX5 had poor outcome (p<0.0001 for both OS and DFS for ALDOA; p=0.001 for OS; and p=0.011 for DFS for DDX5) compared with patients who had low expression of those proteins. Furthermore, multivariate Cox analysis showed that ALDOA/DDX5 combination was an independent risk factor for OS and ALDOA was an independent risk factor for DFS. Conclusion High levels of ALDOA and DDX5 contribute to the aggressiveness and poor prognosis of CRC. ALDOA/DDX5 expression could be a biomarkers for the prognosis of CRC.
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Affiliation(s)
- Ling Dai
- Department of Gastroenterology Surgery, Affiliated Hospital of Guilin Medical University, Guilin, People's Republic of China
| | - Guangdong Pan
- Department of Hepatobiliary Surgery, The People's Hospital of Liuzhou, Liuzhou, People's Republic of China
| | - Xiaojia Liu
- Department of Pathology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Jiang Huang
- Institute of Biotechnology, Guilin Medical University, Guilin, People's Republic of China
| | - Zhiqing Jiang
- Department of Gastroenterology Surgery, Affiliated Hospital of Guilin Medical University, Guilin, People's Republic of China
| | - Xiaobao Zhu
- Department of Gastroenterology Surgery, Affiliated Hospital of Guilin Medical University, Guilin, People's Republic of China
| | - Xinli Gan
- Department of Gastroenterology Surgery, Affiliated Hospital of Guilin Medical University, Guilin, People's Republic of China
| | - Qing Xu
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Guilin, People's Republic of China,
| | - Ning Tan
- Laboratory of Liver Injury and Repair Molecular Medicine, Guilin Medical University, Guilin, People's Republic of China,
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37
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Sha M, Lin M, Wang J, Ye J, Xu J, Xu N, Huang J. Long non-coding RNA MIAT promotes gastric cancer growth and metastasis through regulation of miR-141/DDX5 pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018. [PMID: 29540201 PMCID: PMC5852965 DOI: 10.1186/s13046-018-0725-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND The objective of this study was to investigate the role and mechanism of long non-coding RNA MIAT in gastric cancer (GC). METHODS Real-time PCR was used to determine MIAT level in 120 GC tissues, and in two gastric cancer cell lines. The clinicopathological characteristics of MIAT in GC patients were analyzed. Small interfering RNA specific for MIAT (si-MIAT) and lentivector for si-MIAT was performed to down-regulate MIAT expression in GC cells and in animal tumor model, respectively. The interaction of MIAT and miR-141 was measured by RNA pull-down assay and RNA immunoprecipitation. The biological function of si-MIAT on GC cell growth and metastasis were explored through flow cytometry assay, invasion and migration assay in vitro. RESULTS MIAT was highly expressed in GC tissues and cell lines and correlated with differentiation degree, TNM stage, distant metastasis, and lymph node metastasis. MIAT knockdown inhibited GC growth and metastasis both in vitro and in vivo. Furthermore, MIAT acted as miR-141 sponge and regulated its target gene DDX5 expression. In BGC-823 and MGC-803 cells with si-MIAT, DDX5 overexpression resulted in an increase of cell proliferation, migration and invasion. CONCLUSIONS Our data indicated that MIAT played an oncogenic role in GC growth and metastasis, and could serve as a novel molecular target for treating GC.
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Affiliation(s)
- Min Sha
- Institute of Clinical medicine, Taizhou people's Hospital affiliated of Nantong University of medicine, Taizhou, China
| | - Mei Lin
- Institute of Clinical medicine, Taizhou people's Hospital affiliated of Nantong University of medicine, Taizhou, China
| | - Jia Wang
- Department of Reproductive Medicine, Taizhou people's Hospital affiliated of Nantong University of medicine, Taizhou, China
| | - Jun Ye
- Institute of Clinical medicine, Taizhou people's Hospital affiliated of Nantong University of medicine, Taizhou, China
| | - Jie Xu
- Institute of Clinical medicine, Taizhou people's Hospital affiliated of Nantong University of medicine, Taizhou, China
| | - Ning Xu
- Department of Gastroenterology, Taizhou people's Hospital affiliated of Nantong University of medicine, Taizhou, China
| | - Junxing Huang
- Institute of Oncology, Taizhou people's Hospital affiliated of Nantong University of medicine, 210 Yingchun, Taizhou, Jiangsu Province, 225300, China.
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Liu Y, Imai R. Function of Plant DExD/H-Box RNA Helicases Associated with Ribosomal RNA Biogenesis. FRONTIERS IN PLANT SCIENCE 2018; 9:125. [PMID: 29472942 PMCID: PMC5809497 DOI: 10.3389/fpls.2018.00125] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/23/2018] [Indexed: 05/18/2023]
Abstract
Ribosome biogenesis is a highly complex process that requires several cofactors, including DExD/H-box RNA helicases (RHs). RHs are a family of ATPases that rearrange the secondary structures of RNA and thus remodel ribonucleoprotein complexes. DExD/H-box RHs are found in most organisms and play critical roles in a variety of RNA-involved cellular events. In human and yeast cells, many DExD/H box RHs participate in multiple steps of ribosome biogenesis and regulate cellular proliferation and stress responses. In plants, several DExD/H-box RHs have been demonstrated to be associated with plant development and abiotic stress tolerance through their functions in modulating pre-rRNA processing. In this review, we summarize the pleiotropic roles of DExD/H-box RHs in rRNA biogenesis and other biological functions. We also describe the overall function of the DExD/H-box RH family in ribosome biogenesis based on data from human and yeast.
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Wang C, Kar S, Lai X, Cai W, Arfuso F, Sethi G, Lobie PE, Goh BC, Lim LHK, Hartman M, Chan CW, Lee SC, Tan SH, Kumar AP. Triple negative breast cancer in Asia: An insider's view. Cancer Treat Rev 2017; 62:29-38. [PMID: 29154023 DOI: 10.1016/j.ctrv.2017.10.014] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/29/2017] [Accepted: 10/31/2017] [Indexed: 12/31/2022]
Abstract
While tremendous improvement has been made for the treatment of breast cancers, the treatment of triple negative breast cancer (TNBC) still remains a challenge due to its aggressive characteristics and limited treatment options. Most of the studies on TNBC were conducted in Western population and TNBC is reported to be more frequent in the African women. This review encapsulates the studies conducted on TNBC patients in Asian population and elucidates the similarities and differences between these two regions. The current treatment of TNBC includes surgery, radiotherapy and chemotherapy. In addition to the current chemotherapies, which mainly include cytotoxic agents, such as taxanes and anthracyclines, many clinical trials are investigating the potential use of other chemotherapy drugs, targeted therapeutics and combinational therapies to treat TNBC. Moreover, this review also integrates the studies involving novel markers, which will help us to dissect the pathologic process of TNBC and in turn facilitate the development of better treatment strategies to combat TNBC.
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Affiliation(s)
- Chao Wang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Shreya Kar
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Xianning Lai
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Wanpei Cai
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Frank Arfuso
- Stem Cell and Cancer Biology Laboratory, School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia
| | - Peter E Lobie
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Tsinghua Berkeley Shenzhen Institute, Tsinghua University Graduate School at Shenzhen, Shenzhen, China
| | - Boon C Goh
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Haematology-Oncology, National University Hospital, National University Health System, Singapore; National University Cancer Institute, National University Health System, Singapore
| | - Lina H K Lim
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore; NUS Immunology Program, National University of Singapore, Singapore
| | - Mikael Hartman
- Department of Haematology-Oncology, National University Hospital, National University Health System, Singapore; Department of Surgery, National University Cancer Institute, National University Health System, Singapore; Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | - Ching W Chan
- Department of Surgery, National University Cancer Institute, National University Health System, Singapore
| | - Soo C Lee
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Haematology-Oncology, National University Hospital, National University Health System, Singapore; National University Cancer Institute, National University Health System, Singapore
| | - Sing H Tan
- Department of Haematology-Oncology, National University Hospital, National University Health System, Singapore; National University Cancer Institute, National University Health System, Singapore; OncoCare Cancer Centre, Gleneagles Medical Centre, Singapore.
| | - Alan P Kumar
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Cancer Institute, National University Health System, Singapore; Curtin Medical School, Faculty of Health Sciences, Curtin University, Perth, WA, Australia; Medical Science Cluster, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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Fu Q, Song X, Liu Z, Deng X, Luo R, Ge C, Li R, Li Z, Zhao M, Chen Y, Lin X, Zhang Q, Fang W. miRomics and Proteomics Reveal a miR-296-3p/PRKCA/FAK/Ras/c-Myc Feedback Loop Modulated by HDGF/DDX5/β-catenin Complex in Lung Adenocarcinoma. Clin Cancer Res 2017; 23:6336-6350. [PMID: 28751441 DOI: 10.1158/1078-0432.ccr-16-2813] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 04/19/2017] [Accepted: 07/20/2017] [Indexed: 12/11/2022]
Abstract
Purpose: This study was performed to identify the detailed mechanisms by which miR-296-3p functions as a tumor suppressor to prevent lung adenocarcinoma (LADC) cell growth, metastasis, and chemoresistance.Experimental Design: The miR-296-3p expression was examined by real-time PCR and in situ hybridization. MTT, EdU incorporation, Transwell assays, and MTT cytotoxicity were respectively performed for cell proliferation, metastasis, and chemoresistance; Western blotting was performed to analyze the pathways by miR-296-3p and HDGF/DDX5 complex. The miRNA microarray and luciferase reporter assays were respectively used for the HDGF-mediated miRNAs and target genes of miR-296-3p. The ChIP, EMSA assays, and coimmunoprecipitation combined with mass spectrometry and GST pull-down were respectively designed to analyze the DNA-protein complex and HDGF/DDX5/β-catenin complex.Results: We observed that miR-296-3p not only controls cell proliferation and metastasis, but also sensitizes LADC cells to cisplatin (DDP) in vitro and in vivo Mechanistic studies demonstrated that miR-296-3p directly targets PRKCA to suppress FAK-Ras-c-Myc signaling, thus stimulating its own expression in a feedback loop that blocks cell cycle and epithelial-mesenchymal transition (EMT) signal. Furthermore, we observed that suppression of HDGF-β-catenin-c-Myc signaling activates miR-296-3p, ultimately inhibiting the PRKCA-FAK-Ras pathway. Finally, we found that DDX5 directly interacts with HDGF and induces β-catenin-c-Myc, which suppresses miR-296-3p and further activates PRKCA-FAK-Ras, cell cycle, and EMT signaling. In clinical samples, reduced miR-296-3p is an unfavorable factor that inversely correlates with HDGF/DDX5, but not PRKCA.Conclusions: Our study provides a novel mechanism that the miR-296-3p-PRKCA-FAK-Ras-c-Myc feedback loop modulated by HDGF/DDX5/β-catenin complex attenuates cell growth, metastasis, and chemoresistance in LADC. Clin Cancer Res; 23(20); 6336-50. ©2017 AACR.
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Affiliation(s)
- Qiaofen Fu
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, P.R. China
| | - Xin Song
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, P.R. China
| | - Zhen Liu
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, P.R. China
| | - Xiaojie Deng
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Rongcheng Luo
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Chunlei Ge
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, P.R. China
| | - Ruilei Li
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, P.R. China
| | - Zhen Li
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, P.R. China
| | - Mengyang Zhao
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Yiyu Chen
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Xian Lin
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Qianbing Zhang
- Cancer Research Institute of Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Weiyi Fang
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China.
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Khalaj K, Miller JE, Fenn CR, Ahn S, Luna RL, Symons L, Monsanto SP, Koti M, Tayade C. RNA-Binding Proteins in Female Reproductive Pathologies. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:1200-1210. [PMID: 28408123 DOI: 10.1016/j.ajpath.2017.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 01/26/2017] [Indexed: 12/14/2022]
Abstract
RNA-binding proteins are key regulatory molecules involved primarily in post-transcriptional gene regulation of RNAs. Post-transcriptional gene regulation is critical for adequate cellular growth and survival. Recent reports have shown key interactions between these RNA-binding proteins and other regulatory elements, such as miRNAs and long noncoding RNAs, either enhancing or diminishing their response to RNA stabilization. Many RNA-binding proteins have been reported to play a functional role in mediation of cytokines involved in inflammation and immune dysfunction, and some have been classified as global post-transcriptional regulators of inflammation. The ubiquitous expression of RNA-binding proteins in a wide variety of cell types and their unique mechanisms of degradative action provide evidence that they are involved in reproductive tract pathologies. Aberrant inflammation and immune dysfunction are major contributors to the pathogenesis and disease pathophysiology of many reproductive pathologies, including ovarian and endometrial cancers in the female reproductive tract. Herein, we discuss various RNA-binding proteins and their unique contributions to female reproductive pathologies with a focus on those mediated by aberrant inflammation and immune dysfunction.
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Affiliation(s)
- Kasra Khalaj
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Jessica E Miller
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Christian R Fenn
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - SooHyun Ahn
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Rayana L Luna
- Ultrastructure Laboratory, Aggeu Magalhães Research Center of the Oswaldo Cruz Foundation, Recife, Brazil
| | - Lindsey Symons
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Stephany P Monsanto
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Madhuri Koti
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Chandrakant Tayade
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada.
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Du C, Li DQ, Li N, Chen L, Li SS, Yang Y, Hou MX, Xie MJ, Zheng ZD. DDX5 promotes gastric cancer cell proliferation in vitro and in vivo through mTOR signaling pathway. Sci Rep 2017; 7:42876. [PMID: 28216662 PMCID: PMC5316961 DOI: 10.1038/srep42876] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 01/16/2017] [Indexed: 12/11/2022] Open
Abstract
DEAD (Asp-Glu-Ala-Asp) box helicase 5 (DDX5) is an ATP-dependent RNA helicase that is overexpressed in various malignancies. Increasing evidence suggests that DDX5 participates in carcinogenesis and cancer progression via promoting cell proliferation and metastasis. However, the functional role of DDX5 in gastric cancer is largely unknown. In this study, we observed that DDX5 was significantly up-regulated in gastric cancer tissues compared with the paired adjacent normal tissues. The expression of DDX5 correlated strongly with Ki67 index and pathological stage of gastric cancer. In vitro and in vivo studies suggested that knockdown of DDX5 inhibited gastric cancer cell proliferation, colony formation and xenografts growth, whereas ectopic expression of DDX5 promoted these cellular functions. Mechanically, DDX5 induced gastric cancer cell growth by activating mTOR/S6K1. Treatment of everolimus, the specific mTOR inhibitor, significantly attenuated DDX5-mediated cell proliferation. Interestingly, the expression of DDX5 and p-mTOR in gastric cancer tissues demonstrated a positive correlation. Taken together, these results revealed a novel role of DDX5 in gastric cancer cell proliferation via the mTOR pathway. Therefore, DDX5 may serve as a therapeutic target in gastric cancer.
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Affiliation(s)
- Cheng Du
- Department of Oncology, General Hospital of Shenyang Military Area Command, Shenyang 110840, P. R. China
| | - Dan-Qi Li
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Na Li
- Department of Gynaecology and Obstetrics, First Affiliated Hospital, Jilin University, Jilin 130021, P. R. China
| | - Li Chen
- Department of Aerospace Medicine, The Fourth Military Medical University, Xi'an 710032, P. R. China
| | - Shi-Sen Li
- Department of Digestive Surgery, Xijing Hospital of Digestive Diseases, The Fourth Military Medical University, Xi'an 710032, China
| | - Yang Yang
- Department of Oncology, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, P. R. China
| | - Ming-Xiao Hou
- Rescue Center of Severe Wound and Trauma of PLA, General Hospital of Shenyang Military Area Command, Shenyang 110840, P. R. China
| | - Man-Jiang Xie
- Department of Aerospace Medicine, The Fourth Military Medical University, Xi'an 710032, P. R. China
| | - Zhen-Dong Zheng
- Department of Oncology, General Hospital of Shenyang Military Area Command, Shenyang 110840, P. R. China
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McDaniel SL, Zweifel E, Harris PKW, Yao MC, Cole ES, Chalker DL. DRH1, a p68-related RNA helicase gene, is required for chromosome breakage in Tetrahymena. Biol Open 2016; 5:1790-1798. [PMID: 27793833 PMCID: PMC5200911 DOI: 10.1242/bio.021576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The p68 DEAD box helicases comprise a widely conserved protein family involved in a large range of biological processes including transcription, splicing and translation. The genome of the ciliate Tetrahymena thermophile encodes two p68-like helicases, Drh1p and Lia2p. We show that DRH1 is essential for growth and completion of development. In growing cells, Drh1p is excluded from the nucleus and accumulates near cortical basal bodies. In contrast, during sexual reproduction, this protein localizes to meiotic micronuclei, initially in punctate foci in regions where centromeres and telomeres are known to reside and later in post-zygotic differentiating somatic macronuclei. Differentiation of the macronuclear genome involves extensive DNA rearrangements including fragmentation of the five pairs of germline-derived chromosomes into 180 chromosomal sub-fragments that are stabilized by de novo telomere deletion. In addition, thousands of internal eliminated sequences (IESs) are excised from loci dispersed throughout the genome. Strains with DRH1 deleted from the germline nuclei, which do not express the protein during post-zygotic development, fail to fragment the developing macronuclear chromosomes. IES excision still occurs in the absence of DRH1 zygotic expression; thus, Drh1p is the first protein found to be specifically required for chromosome breakage but not DNA elimination. Summary: The p68-related Drh1protein is essential for both growth and development of the ciliate Tetrahymena thermophila. It localizes to meiotic nuclei and is required for chromosome breakage of developing somatic chromosomes.
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Affiliation(s)
- Stephen L McDaniel
- Department of Biology, Washington University in St. Louis, St Louis, MO 63130, USA
| | - Erica Zweifel
- Biology Department, St. Olaf College, 1520 St. Olaf Avenue, Northfield, MN 55057, USA
| | - Peter K W Harris
- Department of Biology, Washington University in St. Louis, St Louis, MO 63130, USA
| | - Meng-Chao Yao
- Institute of Molecular Biology, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - Eric S Cole
- Biology Department, St. Olaf College, 1520 St. Olaf Avenue, Northfield, MN 55057, USA
| | - Douglas L Chalker
- Department of Biology, Washington University in St. Louis, St Louis, MO 63130, USA
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Sarkar M, Khare V, Ghosh MK. The DEAD box protein p68: a novel coactivator of Stat3 in mediating oncogenesis. Oncogene 2016; 36:3080-3093. [PMID: 27941883 DOI: 10.1038/onc.2016.449] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 10/03/2016] [Accepted: 10/23/2016] [Indexed: 02/06/2023]
Abstract
DEAD box RNA helicase p68 acts as a transcriptional coactivator of several oncogenic transcription factors apart from being a vital player of RNA metabolism. Signal transducer and activator of transcription 3 (Stat3) is a major oncogenic contributor of diverse cancers, including that of colon. Deciphering the mechanistic insights of coactivation of Stat3 transcriptional activity may aid in improved therapeutic strategies. Here we report for the first time a novel mechanism of alliance between p68 and Stat3 in stimulating transcriptional activity of Stat3. Interestingly, we observed that the expression of p68 and Stat3 bears strong positive correlation and significant colocalization in normal and colon carcinoma patient samples. We demonstrated that p68 directly interacts with Stat3 in HEK293 cells as well as multiple colon cancer cell lines. Additionally, p68 positively modulated both mRNA and protein expression levels of Stat3 target genes; promoter activity of Stat3 target gene Mcl-1 in multiple colon cancer cell lines. Also, p68 occupied the promoters of multiple Stat3 target genes in enhancing Stat3-dependent transcription. Moreover, the strong positive correlation between the abundance of p68 and Stat3 target genes in the same set of colon carcinoma samples further supported our observations. Enhanced expression levels of Stat3 target genes observed in primary tumors and metastatic lung nodules, generated in mice colorectal allograft model using syngeneic cells stably expressing p68, further reinforced our in vitro findings. Hence, this study unravels novel modes of p68-mediated oncogenesis through coactivation of Stat3 and enhancing Stat3 signaling.
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Affiliation(s)
- M Sarkar
- Signal Transduction in Cancer and Stem Cells Laboratory, Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), Kolkata, India
| | - V Khare
- Signal Transduction in Cancer and Stem Cells Laboratory, Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), Kolkata, India
| | - M K Ghosh
- Signal Transduction in Cancer and Stem Cells Laboratory, Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), Kolkata, India
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Hu J, Khodadadi-Jamayran A, Mao M, Shah K, Yang Z, Nasim MT, Wang Z, Jiang H. AKAP95 regulates splicing through scaffolding RNAs and RNA processing factors. Nat Commun 2016; 7:13347. [PMID: 27824034 PMCID: PMC5105168 DOI: 10.1038/ncomms13347] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 09/22/2016] [Indexed: 02/07/2023] Open
Abstract
Alternative splicing of pre-mRNAs significantly contributes to the complexity of gene expression in higher organisms, but the regulation of the splice site selection remains incompletely understood. We have previously demonstrated that a chromatin-associated protein, AKAP95, has a remarkable activity in enhancing chromatin transcription. In this study, we show that AKAP95 interacts with many factors involved in transcription and RNA processing, including selective groups of hnRNP proteins, through its N-terminal region, and directly regulates pre-mRNA splicing. AKAP95 binds preferentially to proximal intronic regions on pre-mRNAs in human transcriptome, and this binding requires its zinc-finger domains. By selectively coordinating with hnRNP H/F and U proteins, AKAP95 appears to mainly promote the inclusion of many exons in the genome. AKAP95 also directly interacts with itself. Taken together, our results establish AKAP95 as a mostly positive regulator of pre-mRNA splicing and a possible integrator of transcription and splicing regulation. The chromatin-associated protein AKAP95 is known for its chromatin-related functions including enhancing transcription. Here the authors show that AKAP95 interacts with the splicing regulatory factors as well as RNAs to regulate the inclusion of exons and pre-mRNA splicing.
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Affiliation(s)
- Jing Hu
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama 35294, USA
| | - Alireza Khodadadi-Jamayran
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama 35294, USA
| | - Miaowei Mao
- Lineberger Comprehensive Cancer Center, Department of Pharmacology, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - Kushani Shah
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama 35294, USA
| | - Zhenhua Yang
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama 35294, USA
| | - Md Talat Nasim
- University of Bradford School of Pharmacy, Bradford BD7 1DP, UK
| | - Zefeng Wang
- Lineberger Comprehensive Cancer Center, Department of Pharmacology, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - Hao Jiang
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama 35294, USA
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The multiple functions of RNA helicases as drivers and regulators of gene expression. Nat Rev Mol Cell Biol 2016; 17:426-38. [PMID: 27251421 DOI: 10.1038/nrm.2016.50] [Citation(s) in RCA: 178] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
RNA helicases comprise the largest family of enzymes involved in the metabolism of mRNAs, the processing and fate of which rely on their packaging into messenger ribonucleoprotein particles (mRNPs). In this Review, we describe how the capacity of some RNA helicases to either remodel or lock the composition of mRNP complexes underlies their pleiotropic functions at different steps of the gene expression process. We illustrate the roles of RNA helicases in coordinating gene expression steps and programmes, and propose that RNA helicases function as molecular drivers and guides of the progression of their mRNA substrates from one RNA-processing factory to another, to a productive mRNA pool that leads to protein synthesis or to unproductive mRNA pools that are stored or degraded.
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Wang X, Liu H, Zhao C, Li W, Xu H, Chen Y. The DEAD-box RNA helicase 51 controls non-small cell lung cancer proliferation by regulating cell cycle progression via multiple pathways. Sci Rep 2016; 6:26108. [PMID: 27198888 PMCID: PMC4873746 DOI: 10.1038/srep26108] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 04/25/2016] [Indexed: 12/18/2022] Open
Abstract
The genetic regulation of cell cycle progression and cell proliferation plays a role in the growth of non-small cell lung cancer (NSCLC), one of the most common causes of cancer-related mortality. Although DEAD-box RNA helicases are known to play a role in cancer development, including lung cancer, the potential involvement of the novel family member DDX51 has not yet been investigated. In the current study we assessed the role of DDX51 in NSCLC using a siRNA-based approach. DDX51 siRNA-expressing cells exhibited a slower cell proliferation rate and underwent arrest in S-phase of the cell cycle compared with control cells. Microarray analyses revealed that DDX51siRNA expression resulted in the dysregulation of a number of cell signalling pathways. Moreover, injection of DDX51 siRNA into an animal model resulted in the formation of smaller tumours compared with the control group. We also assessed the expression of DDX51 in patients with NSCLC, and the data revealed that the expression was correlated with patient age but no other risk factors. Overall, our data suggest for the first time that DDX51 aids cell cancer proliferation by regulating multiple signalling pathways, and that this protein might be a therapeutic target for NSCLC.
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Affiliation(s)
- Xiaojing Wang
- Department of Respiration; Anhui Clinical and Preclinical Key Laboratory of Respiratory Diseases; First Affiliated Hospital; Bengbu Medical College; Bengbu 233000, Anhui China
| | - Hongli Liu
- Department of Gynecological Oncology, First Affiliated Hospital; Bengbu Medical College; Bengbu 233000, Anhui China
| | - Chengling Zhao
- Department of Respiration; Anhui Clinical and Preclinical Key Laboratory of Respiratory Diseases; First Affiliated Hospital; Bengbu Medical College; Bengbu 233000, Anhui China
| | - Wei Li
- Department of Respiration; Anhui Clinical and Preclinical Key Laboratory of Respiratory Diseases; First Affiliated Hospital; Bengbu Medical College; Bengbu 233000, Anhui China
| | - Huanbai Xu
- Department of Endocrinology and Metabolism, Shanghai Jiaotong University Affiliated First People's Hospital, Shanghai 200080, China
| | - Yuqing Chen
- Department of Respiration; Anhui Clinical and Preclinical Key Laboratory of Respiratory Diseases; First Affiliated Hospital; Bengbu Medical College; Bengbu 233000, Anhui China
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49
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Garibaldi F, Falcone E, Trisciuoglio D, Colombo T, Lisek K, Walerych D, Del Sal G, Paci P, Bossi G, Piaggio G, Gurtner A. Mutant p53 inhibits miRNA biogenesis by interfering with the microprocessor complex. Oncogene 2016; 35:3760-70. [PMID: 26996669 DOI: 10.1038/onc.2016.51] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 12/18/2022]
Abstract
Downregulation of microRNAs (miRNAs) is commonly observed in cancers and promotes tumorigenesis suggesting that miRNAs may function as tumor suppressors. However, the mechanism through which miRNAs are regulated in cancer, and the connection between oncogenes and miRNA biogenesis remain poorly understood. The TP53 tumor-suppressor gene is mutated in half of human cancers resulting in an oncogene with gain-of-function activities. Here we demonstrate that mutant p53 (mutp53) oncoproteins modulate the biogenesis of a subset of miRNAs in cancer cells inhibiting their post-transcriptional maturation. Interestingly, among these miRNAs several are also downregulated in human tumors. By confocal, co-immunoprecipitation and RNA-chromatin immunoprecipitation experiments, we show that endogenous mutp53 binds and sequesters RNA helicases p72/82 from the microprocessor complex, interfering with Drosha-pri-miRNAs association. In agreement with this, the overexpression of p72 leads to an increase of mature miRNAs levels. Moreover, functional experiments demonstrate the oncosuppressive role of mutp53-dependent miRNAs (miR-517a, -519a, -218, -105). Our study highlights a previously undescribed mechanism by which mutp53 interferes with Drosha-p72/82 association leading, at least in part, to miRNA deregulation observed in cancer.
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Affiliation(s)
- F Garibaldi
- Department of Research, Advanced Diagnostics, and Technological Innovation, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - E Falcone
- Department of Research, Advanced Diagnostics, and Technological Innovation, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - D Trisciuoglio
- Department of Research, Advanced Diagnostics, and Technological Innovation, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - T Colombo
- Institute for System Analysis and Computer Science "Antonio Ruberti", National Research Council, Rome, Italy.,SysBio Centre for Systems Biology, Rome, Italy
| | - K Lisek
- Laboratorio Nazionale CIB, Area Science Park Padriciano, Trieste, Italy.,Dipartimento di Scienze della Vita-Università degli Studi di Trieste, Trieste, Italy
| | - D Walerych
- Laboratorio Nazionale CIB, Area Science Park Padriciano, Trieste, Italy
| | - G Del Sal
- Laboratorio Nazionale CIB, Area Science Park Padriciano, Trieste, Italy.,Dipartimento di Scienze della Vita-Università degli Studi di Trieste, Trieste, Italy
| | - P Paci
- Institute for System Analysis and Computer Science "Antonio Ruberti", National Research Council, Rome, Italy.,SysBio Centre for Systems Biology, Rome, Italy
| | - G Bossi
- Department of Research, Advanced Diagnostics, and Technological Innovation, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy.,Department of Research, Advanced Diagnostics, and Technological Innovation, Laboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Institute, Rome, Italy
| | - G Piaggio
- Department of Research, Advanced Diagnostics, and Technological Innovation, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - A Gurtner
- Department of Research, Advanced Diagnostics, and Technological Innovation, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
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50
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Gurtner A, Falcone E, Garibaldi F, Piaggio G. Dysregulation of microRNA biogenesis in cancer: the impact of mutant p53 on Drosha complex activity. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2016; 35:45. [PMID: 26971015 PMCID: PMC4789259 DOI: 10.1186/s13046-016-0319-x] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 03/03/2016] [Indexed: 12/13/2022]
Abstract
A widespread decrease of mature microRNAs is often observed in human malignancies giving them potential to act as tumor suppressors. Thus, microRNAs may be potential targets for cancer therapy. The global miRNA deregulation is often the result of defects in the miRNA biogenesis pathway, such as genomic mutation or aberrant expression/localization of enzymes and cofactors responsible of miRNA maturation. Alterations in the miRNA biogenesis machinery impact on the establishment and development of cancer programs. Accumulation of pri-microRNAs and corresponding depletion of mature microRNAs occurs in human cancers compared to normal tissues, strongly indicating an impairment of crucial steps in microRNA biogenesis. In agreement, inhibition of microRNA biogenesis, by depletion of Dicer1 and Drosha, tends to enhance tumorigenesis in vivo. The p53 tumor suppressor gene, TP53, is mutated in half of human tumors resulting in an oncogene with Gain-Of-Function activities. In this review we discuss recent studies that have underlined a role of mutant p53 (mutp53) on the global regulation of miRNA biogenesis in cancer. In particular we describe how a new transcriptionally independent function of mutant p53 in miRNA maturation, through a mechanism by which this oncogene is able to interfere with the Drosha processing machinery, generally inhibits miRNA processing in cancer and consequently impacts on carcinogenesis.
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Affiliation(s)
- Aymone Gurtner
- Department of Research, Advanced Diagnostics, and Technological Innovation, Regina Elena National Cancer Institute, 00144, Rome, Italy
| | - Emmanuela Falcone
- Department of Research, Advanced Diagnostics, and Technological Innovation, Regina Elena National Cancer Institute, 00144, Rome, Italy
| | - Francesca Garibaldi
- Department of Research, Advanced Diagnostics, and Technological Innovation, Regina Elena National Cancer Institute, 00144, Rome, Italy.
| | - Giulia Piaggio
- Department of Research, Advanced Diagnostics, and Technological Innovation, Regina Elena National Cancer Institute, 00144, Rome, Italy
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