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Zhao Y, Alizadeh E, Liu Y, Xu M, Mahoney JM, Li S. Inferring single-cell spatial gene expression with tissue morphology via explainable deep learning. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.12.598686. [PMID: 38915550 PMCID: PMC11195284 DOI: 10.1101/2024.06.12.598686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The spatial arrangement of cells is vital in developmental processes and organogenesis in multicellular life forms. Deep learning models trained with spatial omics data uncover complex patterns and relationships among cells, genes, and proteins in a high-dimensional space, providing new insights into biological processes and diseases. State-of-the-art in silico spatial multi-cell gene expression methods using histological images of tissue stained with hematoxylin and eosin (H&E) to characterize cellular heterogeneity. These computational techniques offer the advantage of analyzing vast amounts of spatial data in a scalable and automated manner, thereby accelerating scientific discovery and enabling more precise medical diagnostics and treatments. In this work, we developed a vision transformer (ViT) framework to map histological signatures to spatial single-cell transcriptomic signatures, named SPiRiT ( S patial Omics P rediction and R eproducibility integrated T ransformer). Our framework was enhanced by integrating cross validation with model interpretation during hyper-parameter tuning. SPiRiT predicts single-cell spatial gene expression using the matched histopathological image tiles of human breast cancer and whole mouse pup, evaluated by Xenium (10x Genomics) datasets. Furthermore, ViT model interpretation reveals the high-resolution, high attention area (HAR) that the ViT model uses to predict the gene expression, including marker genes for invasive cancer cells ( FASN ), stromal cells ( POSTN ), and lymphocytes ( IL7R ). In an apple-to-apple comparison with the ST-Net Convolutional Neural Network algorithm, SPiRiT improved predictive accuracy by 40% using human breast cancer Visium (10x Genomics) dataset. Cancer biomarker gene prediction and expression level are highly consistent with the tumor region annotation. In summary, our work highlights the feasibility to infer spatial single-cell gene expression using tissue morphology in multiple-species, i.e., human and mouse, and multi-organs, i.e., mouse whole body morphology. Importantly, incorporating model interpretation and vision transformer is expected to serve as a general-purpose framework for spatial transcriptomics.
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Das S, Russon MP, Zea MP, Xing Z, Torregrosa-Allen S, Cervantes HE, Harper HA, Elzey BD, Tran EJ. WITHDRAWN: Supinoxin blocks Small Cell Lung Cancer Progression by Inhibiting Mitochondrial Respiration through the RNA Helicase DDX5. RESEARCH SQUARE 2024:rs.3.rs-4169007. [PMID: 38699339 PMCID: PMC11065055 DOI: 10.21203/rs.3.rs-4169007/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
The authors have requested that this preprint be removed from Research Square.
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Affiliation(s)
- Subhadeep Das
- Department of Biochemistry, Purdue University, BCHM A343, 175 S.
University Street, West Lafayette, Indiana 47907-2063
- Purdue University Institute for Cancer Research, Purdue
University, Hansen Life Sciences Research Building, Room 141, 201 S. University Street, West
Lafayette, Indiana 47907-2064
| | - Matthew P. Russon
- Department of Biochemistry, Purdue University, BCHM A343, 175 S.
University Street, West Lafayette, Indiana 47907-2063
| | - Maria P. Zea
- Department of Biochemistry, Purdue University, BCHM A343, 175 S.
University Street, West Lafayette, Indiana 47907-2063
| | - Zheng Xing
- Department of Biochemistry, Purdue University, BCHM A343, 175 S.
University Street, West Lafayette, Indiana 47907-2063
| | - Sandra Torregrosa-Allen
- Purdue University Institute for Cancer Research, Purdue
University, Hansen Life Sciences Research Building, Room 141, 201 S. University Street, West
Lafayette, Indiana 47907-2064
| | - Heidi E. Cervantes
- Purdue University Institute for Cancer Research, Purdue
University, Hansen Life Sciences Research Building, Room 141, 201 S. University Street, West
Lafayette, Indiana 47907-2064
| | - Haley Ann Harper
- Purdue University Institute for Cancer Research, Purdue
University, Hansen Life Sciences Research Building, Room 141, 201 S. University Street, West
Lafayette, Indiana 47907-2064
| | - Bennett D. Elzey
- Purdue University Institute for Cancer Research, Purdue
University, Hansen Life Sciences Research Building, Room 141, 201 S. University Street, West
Lafayette, Indiana 47907-2064
- Department of Comparative Pathobiology, Purdue University, West
Lafayette, IN, USA
| | - Elizabeth J. Tran
- Department of Biochemistry, Purdue University, BCHM A343, 175 S.
University Street, West Lafayette, Indiana 47907-2063
- Purdue University Institute for Cancer Research, Purdue
University, Hansen Life Sciences Research Building, Room 141, 201 S. University Street, West
Lafayette, Indiana 47907-2064
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Talukdar PD, Chatterji U. Transcriptional co-activators: emerging roles in signaling pathways and potential therapeutic targets for diseases. Signal Transduct Target Ther 2023; 8:427. [PMID: 37953273 PMCID: PMC10641101 DOI: 10.1038/s41392-023-01651-w] [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: 04/18/2023] [Revised: 08/27/2023] [Accepted: 09/10/2023] [Indexed: 11/14/2023] Open
Abstract
Specific cell states in metazoans are established by the symphony of gene expression programs that necessitate intricate synergic interactions between transcription factors and the co-activators. Deregulation of these regulatory molecules is associated with cell state transitions, which in turn is accountable for diverse maladies, including developmental disorders, metabolic disorders, and most significantly, cancer. A decade back most transcription factors, the key enablers of disease development, were historically viewed as 'undruggable'; however, in the intervening years, a wealth of literature validated that they can be targeted indirectly through transcriptional co-activators, their confederates in various physiological and molecular processes. These co-activators, along with transcription factors, have the ability to initiate and modulate transcription of diverse genes necessary for normal physiological functions, whereby, deregulation of such interactions may foster tissue-specific disease phenotype. Hence, it is essential to analyze how these co-activators modulate specific multilateral processes in coordination with other factors. The proposed review attempts to elaborate an in-depth account of the transcription co-activators, their involvement in transcription regulation, and context-specific contributions to pathophysiological conditions. This review also addresses an issue that has not been dealt with in a comprehensive manner and hopes to direct attention towards future research that will encompass patient-friendly therapeutic strategies, where drugs targeting co-activators will have enhanced benefits and reduced side effects. Additional insights into currently available therapeutic interventions and the associated constraints will eventually reveal multitudes of advanced therapeutic targets aiming for disease amelioration and good patient prognosis.
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Affiliation(s)
- Priyanka Dey Talukdar
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
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Wang J, Han C, Wang J, Peng Q. RNA helicase DDX5-induced circPHF14 promotes gastric cancer cell progression. Aging (Albany NY) 2023; 15:2525-2540. [PMID: 36996491 PMCID: PMC10120908 DOI: 10.18632/aging.204623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/21/2023] [Indexed: 04/01/2023]
Abstract
As a well-established member of a strongly conserved protein family, DDX5 binds to RNA helicase in a specific manner, which can regulate mRNA transcription, protein translation and synthesis and precursor messenger RNA processing or alternative splicing. The effects of DDX5 on carcinogenesis and cancer progression are increasingly evident. Circular RNAs (circRNAs), a novel group of functionally non-coding RNAs (ncRNAs) with disordered expression, are associated with various pathological processes (e.g., tumors). circRNA pattern and its function regulated by DDX5 have not yet been determined. According to our findings, DDX5 was dramatically upregulated for stomach cancer tissues, and its overexpression contributed to the cell growth and invasion of GC cells. Based on the analysis of genome-wide circRNAs conducted with circRNA sequencing, DDX5 induces a large number of circRNAs. Further to screen several circRNAs from PHF14 for function, it was found that circPHF14 was essential for the growth and tumorigenesis of DDX5-positive gastric cancer cells. These findings suggest that in addition to the messenger RNA and microRNA patterns, DDX5 also effects a circRNA pattern, as demonstrated by circPHF14. DDX5-induced circRNAs have been found to be of crucial importance for the growth of DDX5-positive gastric cancer cells, providing a new therapeutic target.
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Affiliation(s)
- Jia Wang
- Department of Immunology, Changzhi Medical College, Changzhi 046000, Shanxi, China
- Collaborative Innovation Center for Aging Mechanism Research and Transformation, Center for Healthy Aging, Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Chunjie Han
- Department of Orthopaedics, Heji Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Jinsheng Wang
- Key Laboratory of Esophageal Cancer Basic Research and Clinical Transformation, Heping Hospital Affiliated to Changzhi Medical College, Changzhi 046000, Shanxi, China
- Department of Pathology, Changzhi Medical College, Changzhi 046000, Shanxi, China
| | - Qiu Peng
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan, China
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Takeda K, Tago K, Funakoshi-Tago M. The indispensable role of the RNA helicase DDX5 in tumorigenesis induced by the myeloproliferative neoplasm-associated JAK2V617F mutant. Cell Signal 2023; 102:110537. [PMID: 36442590 DOI: 10.1016/j.cellsig.2022.110537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 11/03/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
A point mutation (V617F) in the Janus kinase 2 (JAK2) gene results in the production of disorderly activated tyrosine kinase, which causes myeloproliferative neoplasms (MPN). We herein demonstrated that the RNA helicase DDX5 was highly expressed at the mRNA and protein levels through the activation of signal transducer and activator of transcription 5 (STAT5) in Ba/F3 cells expressing a JAK2V617F mutant and erythropoietin receptor (V617F/EpoR cells) and MPN patient-derived HEL cells. A treatment with the JAK1/2 inhibitor, ruxolitinib and STAT5 inhibitor, pimozide significantly inhibited DDX5 mRNA expression and enhanced the degradation of DDX5 in these cells, suggesting that the JAK2V617F mutant positively regulates DDX5 mRNA expression and DDX5 protein stability by activating STAT5. The knockdown of DDX5 specifically inhibited the activation of mechanistic target of rapamycin (mTOR) in V617F/EpoR cells and HEL cells and significantly suppressed the proliferation of these cells. Furthermore, the knockdown of DDX5 markedly suppressed tumorigenesis, splenomegaly, and liver hypertrophy caused by an inoculation of V617F/EpoR cells in nude mice. Collectively, these results revealed that JAK2V617F exhibits transforming activity by inducing the expression of DDX5 in a STAT5-dependent manner, indicating the potential of the JAK2V617F/STAT5/DDX5 axis as a therapeutic target in the treatment of MPN.
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Affiliation(s)
- Kengo Takeda
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Tago
- Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan.
| | - Megumi Funakoshi-Tago
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
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Sun J, Zhang X, Cong Q, Chen D, Yi Z, Huang H, Wang C, Li M, Zeng R, Liu Y, Huai C, Chen L, Liu C, Zhang Y, Xu Y, Fan L, Wang G, Song C, Wei M, Du H, Zhu J, He L, Qin S. miR143-3p-Mediated NRG-1-Dependent Mitochondrial Dysfunction Contributes to Olanzapine Resistance in Refractory Schizophrenia. Biol Psychiatry 2022; 92:419-433. [PMID: 35662508 DOI: 10.1016/j.biopsych.2022.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 11/10/2021] [Accepted: 03/11/2022] [Indexed: 11/02/2022]
Abstract
BACKGROUND Olanzapine is an effective antipsychotic medication for treatment-resistant schizophrenia (TRS); however, the therapeutic effectiveness of olanzapine has been found to vary in individual patients. It is imperative to unravel its resistance mechanisms and find reliable targets to develop novel precise therapeutic strategies. METHODS Unbiased RNA sequencing analysis was performed using homogeneous populations of neural stem cells derived from induced pluripotent stem cells in 3 olanzapine responder (reduction of Positive and Negative Syndrome Scale score ≥25%) and 4 nonresponder (reduction of Positive and Negative Syndrome Scale score <25%) inpatients with TRS. We also used a genotyping study from patients with TRS to assess the candidate genes associated with the olanzapine response. CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9-mediated genome editing, neurologic behavioral tests, RNA silencing, and microRNA sequencing were used to investigate the phenotypic mechanisms of an olanzapine resistance gene in patients with TRS. RESULTS Neuregulin-1 (NRG-1) deficiency-induced mitochondrial dysfunction is associated with olanzapine treatment outcomes in TRS. NRG-1 knockout mice showed schizophrenia-relevant behavioral deficits and yielded olanzapine resistance. Notably, miR143-3p is a critical NRG-1 target related to mitochondrial dysfunction, and miR143-3p levels in neural stem cells associate with severity to olanzapine resistance in TRS. Meanwhile, olanzapine resistance in NRG-1 knockout mice could be rescued by treatment with miR143-3p agomir via intracerebral injection. CONCLUSIONS Our findings provide direct evidence of olanzapine resistance resulting from NRG-1 deficiency-induced mitochondrial dysfunction, and they link olanzapine resistance and NRG-1 deficiency-induced mitochondrial dysfunction to an NRG-1/miR143-3p axis, which constitutes a novel biomarker and target for TRS.
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Affiliation(s)
- Jing Sun
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China; Neurobiology & Mitochondrial Key Laboratory, School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Xiaoya Zhang
- Neurobiology & Mitochondrial Key Laboratory, School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Qijie Cong
- Neurobiology & Mitochondrial Key Laboratory, School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dong Chen
- Neurobiology & Mitochondrial Key Laboratory, School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Zhenghui Yi
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hailiang Huang
- Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts; Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Cong Wang
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Mo Li
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Rongsen Zeng
- Neurobiology & Mitochondrial Key Laboratory, School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Yunxi Liu
- Neurobiology & Mitochondrial Key Laboratory, School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Cong Huai
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Luan Chen
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Chuanxin Liu
- School of Mental Health, Jining Medical University, Jining, China
| | - Yan Zhang
- The Second People's Hospital of Lishui, Lishui, China
| | - Yong Xu
- Department of Psychiatry, First Hospital, First Clinical Medical College of Shanxi Medical University, Taiyuan, China
| | - Lingzi Fan
- Zhumadian Psychiatric Hospital, Zhumadian, China
| | - Guoqiang Wang
- Wuxi Mental Health Center of Nanjing Medical University, Wuxi, China
| | - Chuanfu Song
- The Fourth People's Hospital of Wuhu, Wuhu, China
| | - Muyun Wei
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Huihui Du
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Jinhang Zhu
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Lin He
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - Shengying Qin
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China.
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Long T, Abbasi N, Hernandez JE, Li Y, Sayed IM, Ma S, Iemolo A, Yee BA, Yeo GW, Telese F, Ghosh P, Das S, Huang WJM. RNA binding protein DDX5 directs tuft cell specification and function to regulate microbial repertoire and disease susceptibility in the intestine. Gut 2022; 71:1790-1802. [PMID: 34853057 PMCID: PMC9156727 DOI: 10.1136/gutjnl-2021-324984] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 11/12/2021] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Tuft cells residing in the intestinal epithelium have diverse functions. In the small intestine, they provide protection against inflammation, combat against helminth and protist infections, and serve as entry portals for enteroviruses. In the colon, they had been implicated in tumourigenesis. Commitment of intestinal progenitor cells to the tuft cell lineage requires Rho GTPase Cell Division Cycle 42 (CDC42), a Rho GTPase that acts downstream of the epidermal growth factor receptor and wingless-related integration site signalling cascades, and the master transcription factor POU class 2 homeobox 3 (POU2F3). This study investigates how this pathway is regulated by the DEAD box containing RNA binding protein DDX5 in vivo. DESIGN We assessed the role of DDX5 in tuft cell specification and function in control and epithelial cell-specific Ddx5 knockout mice (DDX5ΔIEC) using transcriptomic approaches. RESULTS DDX5ΔIEC mice harboured a loss of intestinal tuft cell populations, modified microbial repertoire, and altered susceptibilities to ileal inflammation and colonic tumourigenesis. Mechanistically, DDX5 promotes CDC42 protein synthesis through a post-transcriptional mechanism to license tuft cell specification. Importantly, the DDX5-CDC42 axis is parallel but distinct from the known interleukin-13 circuit implicated in tuft cell hyperplasia, and both pathways augment Pou2f3 expression in secretory lineage progenitors. In mature tuft cells, DDX5 not only promotes integrin signalling and microbial responses, it also represses gene programmes involved in membrane transport and lipid metabolism. CONCLUSION RNA binding protein DDX5 directs tuft cell specification and function to regulate microbial repertoire and disease susceptibility in the intestine.
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Affiliation(s)
- Tianyun Long
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Nazia Abbasi
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Juan E Hernandez
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Yuxin Li
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Ibrahim M Sayed
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Shengyun Ma
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Attilio Iemolo
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Brian A Yee
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Gene W Yeo
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
| | - Francesca Telese
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Pradipta Ghosh
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Soumita Das
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Wendy Jia Men Huang
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
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Secchi M, Lodola C, Garbelli A, Bione S, Maga G. DEAD-Box RNA Helicases DDX3X and DDX5 as Oncogenes or Oncosuppressors: A Network Perspective. Cancers (Basel) 2022; 14:cancers14153820. [PMID: 35954483 PMCID: PMC9367324 DOI: 10.3390/cancers14153820] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/01/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The transformation of a normal cell into a cancerous one is caused by the deregulation of different metabolic pathways, involving a complex network of protein–protein interactions. The cellular enzymes DDX3X and DDX5 play important roles in the maintenance of normal cell metabolism, but their deregulation can accelerate tumor transformation. Both DDX3X and DDX5 interact with hundreds of different cellular proteins, and depending on the specific pathways in which they are involved, both proteins can either act as suppressors of cancer or as oncogenes. In this review, we summarize the current knowledge about the roles of DDX3X and DDX5 in different tumors. In addition, we present a list of interacting proteins and discuss the possible contribution of some of these protein–protein interactions in determining the roles of DDX3X and DDX5 in the process of cancer proliferation, also suggesting novel hypotheses for future studies. Abstract RNA helicases of the DEAD-box family are involved in several metabolic pathways, from transcription and translation to cell proliferation, innate immunity and stress response. Given their multiple roles, it is not surprising that their deregulation or mutation is linked to different pathological conditions, including cancer. However, while in some cases the loss of function of a given DEAD-box helicase promotes tumor transformation, indicating an oncosuppressive role, in other contexts the overexpression of the same enzyme favors cancer progression, thus acting as a typical oncogene. The roles of two well-characterized members of this family, DDX3X and DDX5, as both oncogenes and oncosuppressors have been documented in several cancer types. Understanding the interplay of the different cellular contexts, as defined by the molecular interaction networks of DDX3X and DDX5 in different tumors, with the cancer-specific roles played by these proteins could help to explain their apparently conflicting roles as cancer drivers or suppressors.
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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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10
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Jones W, Tait D, Livasy C, Ganapathi M, Ganapathi R. PLK3 amplification and tumor immune microenvironment of metastatic tumors are linked to adjuvant treatment outcomes in uterine serous cancer. NAR Cancer 2022; 4:zcac026. [PMID: 36177381 PMCID: PMC9513840 DOI: 10.1093/narcan/zcac026] [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: 06/02/2022] [Revised: 08/05/2022] [Accepted: 09/07/2022] [Indexed: 11/28/2022] Open
Abstract
Uterine serous carcinoma (USC), an aggressive variant of endometrial cancer representing approximately 10% of endometrial cancer diagnoses, accounts for ∼39% of endometrial cancer-related deaths. We examined the role of genomic alterations in advanced-stage USC associated with outcome using paired primary-metastatic tumors (n = 29) treated with adjuvant platinum and taxane chemotherapy. Comparative genomic analysis of paired primary-metastatic patient tumors included whole exome sequencing and targeted gene expression. Both PLK3 amplification and the tumor immune microenvironment (TIME) in metastatic tumors were linked to time-to-recurrence (TTR) risk without any such association observed with primary tumors. TP53 loss was significantly more frequent in metastatic tumors of platinum-resistant versus platinum-sensitive patients and was also associated with increased recurrence and mortality risk. Increased levels of chr1 breakpoints in USC metastatic versus primary tumors co-occur with PLK3 amplification. PLK3 and the TIME are potential targets for improving outcomes in USC adjuvant therapy.
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Affiliation(s)
- Wendell Jones
- Bioinformatics, Q2 Solutions Genomics , Durham , NC, USA
| | - David Tait
- Levine Cancer Institute, Atrium Health , Charlotte , NC, USA
| | - Chad Livasy
- Carolinas Pathology Group , Charlotte , NC, USA
| | | | - Ram Ganapathi
- Levine Cancer Institute, Atrium Health , Charlotte , NC, USA
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11
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Wang J, Wang Y, Wang J, Zhang S, Yu Z, Zheng K, Fu Z, Wang C, Huang W, Chen J. DEAD-box helicase 56 functions as an oncogene promote cell proliferation and invasion in gastric cancer via the FOXO1/p21 Cip1/c-Myc signaling pathway. Bioengineered 2022; 13:13970-13985. [PMID: 35723050 PMCID: PMC9275944 DOI: 10.1080/21655979.2022.2084235] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
DEAD-box helicase (DDX) family exerts a critical effect on cancer initiation and progression through alternative splicing, transcription and ribosome biogenesis. Increasing evidence has demonstrated that DEAD-box helicase 56 (DDX56) is over-expressed in several cancers, which plays an oncogenic role. Till the present, the impact of DDX56 on gastric cancer (GC) remains unclear. We conducted high-throughput sequencing (RNA-seq) to demonstrate aberrant DDX56 levels within 10 GC and matched non-carcinoma tissue samples. DDX56 levels were detected through qRT-PCR, western blotting (WB) and immunochemical staining in GC patients. We conducted gain- and loss-of-function studies to examine DDX56's biological role in GC development. In vitro, we carried out 5‑Ethynyl‑2‑deoxyuridine (EdU), scratch, Transwell, and flow cytometry (FCM) assays for detecting GC cell growth, invasion, migration and apoptosis. Additionally, gene set enrichment analysis (GSEA), WB assay, and Encyclopedia of RNA Interactomes (ENCORI) were carried out for analyzing DDX56-regulated downstream genes and signaling pathways. In vivo, tumor xenograft experiment was performed for investigating how DDX56 affected GC development within BALB/c nude mice. Functionally, DDX56 knockdown arrested cell cycle at G1 phase, invasion and migration of AGS and MKN28 cells, and enhanced their apoptosis. Ectopic DDX56 expression enhanced the cell growth, migration and invasion, and inhibited apoptosis. Knockdown of DDX56 suppressed GC growth in the tumor models of BALB/c nude mice. Mechanistically, DDX56 post-transcriptionally suppressed FOXO1/p21 Cip1 protein expression, which could activate its downstream cyclin E1/CDK2/c-Myc signaling pathways. This sheds lights on the GC pathogenic mechanism and offers a potential anti-cancer therapeutic target.
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Affiliation(s)
- Jiancheng Wang
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Ye Wang
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Junfu Wang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Siwen Zhang
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhu Yu
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Kaitian Zheng
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhao Fu
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Congjun Wang
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Weijia Huang
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Junqiang Chen
- Department of Gastrointestinal Gland Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China.,Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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12
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Aziz S, Rasheed F, Zahra R, König S. Gastric Cancer Pre-Stage Detection and Early Diagnosis of Gastritis Using Serum Protein Signatures. Molecules 2022; 27:molecules27092857. [PMID: 35566209 PMCID: PMC9099457 DOI: 10.3390/molecules27092857] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/22/2022] [Accepted: 04/27/2022] [Indexed: 02/04/2023] Open
Abstract
Background: A gastric cancer (GC) diagnosis relies on histopathology. Endoscopy rates are increasing. Helicobacter pylori infection is a major GC risk factor. In an effort to elucidate abundant blood biomarkers, and potentially reduce the number of diagnostic surgical interventions, we investigated sera and biopsies from a cohort of 219 H. pylori positive and negative patients diagnosed with GC, gastritis, and ulcers. This allowed the comparative investigation of the different gastroduodenal diseases, and the exclusion of protein changes resulting from bacterial infection or inflammation of the gastric mucosa when searching for GC-dependent proteins. Methods: High-definition mass spectrometry-based expression analysis of tryptically digested proteins was performed, followed by multivariate statistical and network analyses for the different disease groups, with respect to H. pylori infection status. Significantly regulated proteins differing more than two-fold between groups were shortlisted, and their role in gastritis and GC discussed. Results: We present data of comparative protein analyses of biopsies and sera from patients suffering from mild to advanced gastritis, ulcers, and early to advanced GC, in conjunction with a wealth of metadata, clinical information, histopathological evaluation, and H. pylori infection status. We used samples from pre-malignant stages to extract prospective serum markers for early-stage GC, and present a 29-protein marker panel containing, amongst others, integrin β-6 and glutathione peroxidase. Furthermore, ten serum markers specific for advanced GC, independent of H. pylori infection, are provided. They include CRP, protein S100A9, and kallistatin. The majority of these proteins were previously discussed in the context of cancer or GC. In addition, we detected hypoalbuminemia and increased fibrinogen serum levels in gastritis. Conclusion: Two protein panels were suggested for the development of multiplex tests for GC serum diagnostics. For most of the elements contained in these panels, individual commercial tests are available. Thus, we envision the design of multi-protein assays, incorporating several to all of the panel members, in order to gain a level of specificity that cannot be achieved by testing a single protein alone. As their development and validation will take time, gastritis diagnosis based on the fibrinogen to albumin serum ratio may be a quick way forward. Its determination at the primary/secondary care level for early diagnosis could significantly reduce the number of referrals to endoscopy. Preventive measures are in high demand. The protein marker panels presented in this work will contribute to improved GC diagnostics, once they have been transferred from a research result to a practical tool.
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Affiliation(s)
- Shahid Aziz
- BreathMAT Lab, Pakistan Institute of Nuclear Science and Technology (PINSTEC), Islamabad 44000, Pakistan; (S.A.); (F.R.)
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan;
- IZKF Core Unit Proteomics, University of Münster, 48149 Münster, Germany
| | - Faisal Rasheed
- BreathMAT Lab, Pakistan Institute of Nuclear Science and Technology (PINSTEC), Islamabad 44000, Pakistan; (S.A.); (F.R.)
| | - Rabaab Zahra
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan;
| | - Simone König
- IZKF Core Unit Proteomics, University of Münster, 48149 Münster, Germany
- Correspondence:
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13
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Song L, Liu S, Zhao S. Everolimus (RAD001) combined with programmed death-1 (PD-1) blockade enhances radiosensitivity of cervical cancer and programmed death-ligand 1 (PD-L1) expression by blocking the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR)/S6 kinase 1 (S6K1) pathway. Bioengineered 2022; 13:11240-11257. [PMID: 35485300 PMCID: PMC9208494 DOI: 10.1080/21655979.2022.2064205] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cervical cancer (CC) is the 4th most prevalent malignancy in females. This study explored the mechanism of everolimus (RAD001) combined with programmed death-1 (PD-1) blockade on radiosensitivity by phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) pathway and autophagy in CC cells. Low-radiosensitive CaSki cells were selected as study objects. After RAD001 treatment, PI3K/AKT/mTOR pathway activation, autophagy, migration and invasion abilities, autophagy-related proteins (LC3-I, LC3-II, and p62), and PD-L1 expression in CC cells were detected. After triple treatment of radiotherapy (RT), RAD001, and PD-1 blockade to the CC mouse models, tumor weight and volume were recorded. Ki67 expression, the number of CD8 + T cells, and the ability to produce IFN-γ and TNF-α in tumor tissues were determined. RAD001 promoted autophagy by repressing PI3K/AKT/mTOR pathway, augmented RT-induced apoptosis, and weakened migration and invasion, thereby increasing CC cell radiosensitivity. RAD001 elevated RT-induced PD-L1 level. RT combined with RAD001 and PD-1 blockade intensified the inhibitory effect of RT on tumor growth, reduced the amount of Ki67-positive cells, enhanced radiosensitivity of CC mice, and increased the quantity and killing ability of CD8 + T cells. Briefly, RAD001 combined with PD-1 blockade increases radiosensitivity of CC by impeding the PI3K/AKT/mTOR pathway and potentiating cell autophagy.
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Affiliation(s)
- Lili Song
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Shikai Liu
- Department of Obstetrics and Gynecology, Cangzhou Central Hospital, Cangzhou, Hebei, China
| | - Sufen Zhao
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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14
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Gao F, Li R, Wei PF, Ou L, Li M, Bai Y, Luo WJ, Fan Z. Synergistic anticancer effects of everolimus (RAD001) and Rhein on gastric cancer cells via phosphoinositide-3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) pathway. Bioengineered 2022; 13:6332-6342. [PMID: 35209807 PMCID: PMC8973710 DOI: 10.1080/21655979.2021.2005988] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 01/26/2023] Open
Abstract
Everolimus (RAD001) is a mTOR inhibitor and is widely used for the treatment of gastric cancer (GC). Evidence suggests that Rhein has anticancer effect on GC. But the synergistic effect and mechanism of RAD001 and Rhein combination on GC is not clear. The current study aims to clarify the combination of RAD001 and Rhein in GC treatment. We found Rhein dose-dependently repressed MGC-803 cell viability (50% inhibition concentration (IC50) value = 94.26 μM). Rhein (80 μM) significantly suppressed GC cell proliferation and invasion. RAD001 dose-dependently repressed MGC-803 cells viability (IC50 value = 45.41 nM). The combination of Rhein and RAD001 repressed MGC-803 cells viability, invasion, and proliferation compared to the administration of Rhein or RAD001 alone. Protein levels of epithelial-mesenchymal transition (EMT)-related molecules E-cadherin, N-cadherin and Vimentin expressions were significantly affected by the combination of Rhein and RAD001. The combination of Rhein and RAD001 significantly facilitated cell apoptosis and up-regulated expressions of cell apoptosis and cycle-related protein p53, cyclin-dependent kinase 4 (CDK4) and cyclin D1 compared to the administration of Rhein or RAD001 alone. Moreover, the combination of Rhein and RAD001 repressed the expressions of phosphorylation-phosphoinositide-3-kinase (p-PI3K), p-protein kinase B (p-AKT) and p-mammalian target of rapamycin (p-mTOR). Finally, the combination of RAD001 and Rhein significantly decreased tumor weight and volume, suppressed the expressions of p-PI3K, p-Akt and p-mTOR, and repressed cell proliferation marker Ki-67 expression, which exerted synergistic cancer prevention in GC in vivo. Overall, the combination of Rhein and RAD001 exert synergistic cancer prevention in GC via PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Feng Gao
- Teaching and Research Office of Chinese Pharmacy, The College of Pharmacy of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Rui Li
- Department of Emergency, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Pei-Feng Wei
- The Office of Drug Clinical Trial Institution, The Second Affiliated Hospital of Shaanxi University of traditional Chinese Medicine, Xianyang, Shaanxi, China
| | - Li Ou
- Teaching and Research Office of Chinese Pharmacy, The College of Pharmacy of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Min Li
- Teaching and Research Office of Chinese Pharmacy, The College of Pharmacy of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Yang Bai
- The Office of Drug Clinical Trial Institution, The Second Affiliated Hospital of Shaanxi University of traditional Chinese Medicine, Xianyang, Shaanxi, China
| | - Wen-Jia Luo
- Teaching and Research Office of Chinese Pharmacy, The College of Pharmacy of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Zheng Fan
- Department of Gastroenterology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang712000, Shaanxi, China
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15
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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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16
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Jiang P, Ma X, Han S, Ma L, Ai J, Wu L, Zhang Y, Xiao H, Tian M, Tao WA, Zhang S, Chai R. Characterization of the microRNA transcriptomes and proteomics of cochlear tissue-derived small extracellular vesicles from mice of different ages after birth. Cell Mol Life Sci 2022; 79:154. [PMID: 35218422 PMCID: PMC11072265 DOI: 10.1007/s00018-022-04164-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/30/2021] [Accepted: 01/23/2022] [Indexed: 12/22/2022]
Abstract
The cochlea is an important sensory organ for both balance and sound perception, and the formation of the cochlea is a complex developmental process. The development of the mouse cochlea begins on embryonic day (E)9 and continues until postnatal day (P)21 when the hearing system is considered mature. Small extracellular vesicles (sEVs), with a diameter ranging from 30 to 200 nm, have been considered a significant medium for information communication in both physiological and pathological processes. However, there are no studies exploring the role of sEVs in the development of the cochlea. Here, we isolated tissue-derived sEVs from the cochleae of FVB mice at P3, P7, P14, and P21 by ultracentrifugation. These sEVs were first characterized by transmission electron microscopy, nanoparticle tracking analysis, and western blotting. Next, we used small RNA-seq and mass spectrometry to characterize the microRNA transcriptomes and proteomes of cochlear sEVs from mice at different ages. Many microRNAs and proteins were discovered to be related to inner ear development, anatomical structure development, and auditory nervous system development. These results all suggest that sEVs exist in the cochlea and are likely to be essential for the normal development of the auditory system. Our findings provide many sEV microRNA and protein targets for future studies of the roles of cochlear sEVs.
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Affiliation(s)
- Pei Jiang
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Xiangyu Ma
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Shanying Han
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Leyao Ma
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Jingru Ai
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Leilei Wu
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Yuan Zhang
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Hairong Xiao
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Mengyao Tian
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - W Andy Tao
- Department of Chemistry, Department of Biochemistry, Purdue University, West Lafayette, Indiana, 47907, USA.
- Center for Cancer Research, Purdue University, West Lafayette, Indiana, 47907, USA.
| | - Shasha Zhang
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
| | - Renjie Chai
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.
- Department of Otolaryngology Head and Neck Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China.
- Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, 100069, China.
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17
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Qin T, Cheng Y, Wang X. RNA-binding proteins as drivers of AML and novel therapeutic targets. Leuk Lymphoma 2022; 63:1045-1057. [PMID: 35075986 DOI: 10.1080/10428194.2021.2008381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Acute myeloid leukemia (AML) is a group of genetically complex and heterogeneous invasive hematological malignancies with a low 5-year overall survival rate of 30%, which highlights the urgent need for improved treatment measures. RNA-binding proteins (RBPs) regulate the abundance of isoforms of related proteins by regulating RNA splicing, translation, stability, and localization, thereby affecting cell differentiation and self-renewal. It is increasingly believed that RBPs are essential for normal hematopoiesis, and RBPs play a key role in hematological tumors, especially AML, by acting as oncogenes or tumor suppressors. In addition, targeting an RBP that is significantly related to AML can trigger the apoptosis of leukemic stem cells or promote the proliferation of stem and progenitor cells by modulating the expression of important pathway regulatory factors such as HOXA9, MYC, and CDKN1A. Accordingly, RBPs involved in normal myeloid differentiation and the occurrence of AML may represent promising therapeutic targets.
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Affiliation(s)
- Tingyu Qin
- Jiangxi Province Key Laboratory of Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ying Cheng
- Jiangxi Province Key Laboratory of Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaozhong Wang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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18
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Li K, Zhao G, Yuan H, Zhang J, Li Q, Gong D, Lin P. Upregulated expression of DDX5 predicts recurrence and poor prognosis in breast cancer. Pathol Res Pract 2021; 229:153736. [PMID: 34923193 DOI: 10.1016/j.prp.2021.153736] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 02/05/2023]
Abstract
DEAD-box helicase 5 (DDX5) has been shown to promote tumorigenesis and cancer progression. However, the relationship between DDX5 and recurrence in breast cancer (BC) patients remains unknown. The objective of the present study was to evaluate the correlation of DDX5 with recurrence-free survival (RFS) and breast cancer-specific survival (BCSS) in patients with BC. The expression of DDX5 was examined by immunohistochemical analysis. RFS was calculated by Kaplan-Meier survival analysis. Univariate and multivariable associations were assessed by Cox proportional hazards models. In the present study, a total of 868 BC patients were analysed, and we found that DDX5 protein was significantly overexpressed in BC tissues compared to adjacent normal tissues. Elevated DDX5 was associated with an aggressive phenotype in BC patients. Moreover, DDX5 protein was upregulated in recurrent patients compared with nonrecurrent patients, and DDX5 protein levels were positively associated with worse RFS and BCSS in BC patients. High DDX5 expressing BC patients with age more than 50 year, advanced clinical stage or histological grade had a significantly increased risk of recurrence and shorter survival. Our findings highlight the significance of DDX5 in the recurrence and clinical outcome of BC patients and suggest that DDX5 may be a potential predictive biomarker for patients with BC.
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Affiliation(s)
- Kai Li
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Gang Zhao
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Hang Yuan
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jie Zhang
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Qin Li
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Di Gong
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Ping Lin
- Lab of Experimental Oncology, State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
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19
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Li F, Fountzilas C, Puzanov I, Attwood KM, Morrison C, Ling X. Multiple functions of the DEAD-box RNA helicase, DDX5 (p68), make DDX5 a superior oncogenic biomarker and target for targeted cancer therapy. Am J Cancer Res 2021; 11:5190-5213. [PMID: 34765320 PMCID: PMC8569338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023] Open
Abstract
DDX5 (p68) is a well-known multifunctional DEAD-box RNA helicase and a transcription cofactor. Since its initial discovery more than three decades ago, DDX5 is gradually recognized as a potential biomarker and target for the treatment of various cancer types. Studies over the years significantly expanded our understanding of the functional diversity of DDX5 in various cancer types and extended our knowledge of its Mechanism of Action (MOA). This provides a rationale for the development of novel cancer therapeutics by using DDX5 as a biomarker and a therapeutic target. However, while most of the published studies have found DDX5 to be an oncogenic target and a cancer treatment-resistant biomarker, a few studies have reported that in certain scenarios, DDX5 may act as a tumor suppressor. After careful review of all the available relevant studies in the literature, we found that the multiple functions of DDX5 make it both a superior independent oncogenic biomarker and target for targeted cancer therapy. In this article, we will summarize the relevant studies on DDX5 in literature with a careful analysis and discussion of any inconsistencies encountered, and then provide our conclusions with respect to understanding the MOA of FL118, a novel small molecule. We hope that such a review will stimulate further discussion on this topic and assist in developing better strategies to treat cancer by using DDX5 as both an oncogenic biomarker and therapeutic target.
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Affiliation(s)
- Fengzhi Li
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
- Department of Developmental Therapeutics Program, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
| | - Christos Fountzilas
- Department of Medicine, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
- Department of Alliance for Clinical Trials in Oncology Pancreatic Ductal Adenocarcinoma Working Group, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
- Department of Developmental Therapeutics Program, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
| | - Igor Puzanov
- Department of Medicine, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
- Department of Developmental Therapeutics Program, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
| | - Kristopher M Attwood
- Department of Biostatistics & Bioinformatics, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
- Department of Developmental Therapeutics Program, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
| | - Carl Morrison
- Department of Pathology & Laboratory Medicine, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
| | - Xiang Ling
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer CenterBuffalo, New York 14263, USA
- Canget BioTekpharma LLCBuffalo, New York 14203, USA
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20
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Yang Z, Li G, Zhao Y, Zhang L, Yuan X, Meng L, Liu H, Han Y, Jia L, Zhang S. Molecular Insights into the Recruiting Between UCP2 and DDX5/UBAP2L in the Metabolic Plasticity of Non-Small-Cell Lung Cancer. J Chem Inf Model 2021; 61:3978-3987. [PMID: 34308648 DOI: 10.1021/acs.jcim.1c00138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mitochondrial uncoupling protein 2 (UCP2) is distributed in tumor cells with a link to the support of systemic metabolic deregulation, and the downregulation of UCP2 has been unveiled as a biomarker of oncogenesis and chemoresistance in non-small-cell lung cancer (NSCLC) cells. However, the underlying mechanism of how UCP2 cooperates with other proteins in this metabolic reprogramming remains largely unsolved. We employed a combined computational and experimental strategy to explore into the recruiting of DDX5 with other proteins, and we unraveled the underlying structural mechanisms. We found that recruiting by ATP-dependent RNA helicase DDX5 (DDX5)/ubiquitin-associated protein 2-like (UBAP2L) might help UCP2 to play the pathological roles in NSCLC cells. According to the view of thermodynamics in physics, UCP2 tends to recruit DDX5 rather than UBAP2L, as shown by the ensemble-based docking, molecular dynamics simulations and molecular mechanics generalized Born surface area (MM/GBSA) approach. Cellular immunofluorescence assays further demonstrated that UCP2 associate with DDX5, and the recruiting of DDX5 with UCP2 at least partially contribute to the metabolic plasticity of NSCLCs via the AKT/mTOR pathway. Our study proposed an efficient way for detecting the protein-protein association via the experimentally validated molecular simulation. Our results shed light on the functional annotation of UCP and DDX family proteins in dysregulated metabolism, and the identification of candidate therapeutic targets for NSCLC.
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Affiliation(s)
- Zhiwei Yang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.,MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China.,School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Guoyin Li
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou 466000, China.,State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Yizhen Zhao
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Lei Zhang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiaohui Yuan
- Institute of Biomedicine, Jinan University, Guangzhou 510632, China
| | - Lingjie Meng
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China.,Instrumental Analysis Center, Xi'an Jiao Tong University, Xi'an 710049, China
| | - Huadong Liu
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yong Han
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - Lintao Jia
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Shengli Zhang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
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21
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Fu P, Lin L, Zhou H, Zhao S, Jie Z. Circular RNA circEGFR regulates tumor progression via the miR-106a-5p/DDX5 axis in colorectal cancer. ACTA ACUST UNITED AC 2021; 54:e10940. [PMID: 34320120 PMCID: PMC8302139 DOI: 10.1590/1414-431x2020e10940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 05/28/2021] [Indexed: 12/24/2022]
Abstract
Recently, an increasing number of studies have reported that dysregulation of circular RNA (circRNA) expression plays critical roles in the progression of several cancers, including colorectal cancer (CRC). However, the detailed molecular mechanisms of circRNAs involvement in CRC remain largely unknown. Here, we confirmed that the level of circEGFR was significantly increased in CRC tissues compared to matched adjacent non-tumor tissues, and a high level of circEGFR was correlated with poor clinicopathological characteristics and poor prognosis in patients with CRC. Moreover, increased circEGFR expression promoted CRC cell proliferation, migration, and invasion in vitro. Mechanistically, circEGFR acted as a ceRNA for miR-106a-5p to relieve the repressive effect of miR-106a-5p on DDX5 mRNA. Moreover, circEGFR enhanced DDX5 expression, thereby upregulating p-AKT levels. Together, these findings showed that circEGFR promoted CRC cell proliferation, migration, and invasion through the miR-106a-5p/DDX5/AKT axis, and may serve as a promising diagnostic marker and therapeutic target for CRC patients.
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Affiliation(s)
- Ping Fu
- Department of General Surgery, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, Jiangxi, China
| | - Liangqing Lin
- Department of General Surgery, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, Jiangxi, China
| | - Hui Zhou
- Department of General Surgery, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, Jiangxi, China
| | - Sijun Zhao
- Department of General Surgery, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, Jiangxi, China
| | - Zhigang Jie
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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22
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Wang X, Yang P, Zhang D, Lu M, Zhang C, Sun Y. LncRNA SNHG14 promotes cell proliferation and invasion in colorectal cancer through modulating miR-519b-3p/DDX5 axis. J Cancer 2021; 12:4958-4970. [PMID: 34234865 PMCID: PMC8247390 DOI: 10.7150/jca.55495] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 05/29/2021] [Indexed: 12/15/2022] Open
Abstract
Numbers of studies suggest that long non-coding RNAs (lncRNAs) exert an important role in cancer progression. It is reported that lncRNA SNHG14 (SNHG14) promotes cell proliferation and invasion in many cancers. However, the underlying molecular mechanism of SNHG14 in colorectal cancer (CRC) remains unclear. In our study, we found that SNHG14 is highly expressed in CRC tissues and cells, especially in SW480 and HT-29 cells. In addition, sh-SNHG14 inhibits cell proliferation, cell migration and invasion, promotes cell apoptosis in CRC cell lines. Furthermore, we found that SNHG14 functions as a sponge for miR-519b-3p, while the DEAD box protein 5 (DDX5) is a downstream target gene of miR-519b-3p, and the functions of miR-519b-3p inhibitors on the CRC progression could be rescued by downregulation of DDX5. Our findings suggest that SNHG14 promotes the CRC progression by miR-519b-3p/DDX5 axis, implying the promising therapeutic target of SNHG4 for CRC patients.
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Affiliation(s)
- Xiaoyuan Wang
- Department of General Surgery, The Second Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of General Surgery, The First Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Peng Yang
- Department of General Surgery, The First Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Dongsheng Zhang
- Department of General Surgery, The First Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ming Lu
- Department of General Surgery, The Second Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Chi Zhang
- Department of General Surgery, The Second Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yueming Sun
- Department of General Surgery, The First Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China
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23
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Fu Q, Tan X, Tang H, Liu J. CCL21 activation of the MALAT1/SRSF1/mTOR axis underpins the development of gastric carcinoma. J Transl Med 2021; 19:210. [PMID: 34001131 PMCID: PMC8127212 DOI: 10.1186/s12967-021-02806-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/24/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND As a significant cause of malignancy mortality, gastric carcinoma (GC) has been well documented to be an often-fatal diagnosis. Despite the limitations of effective therapy, immunotherapy has emerged as a promising therapeutic approach capable of killing cancer cells via the immune system. The current study was conducted to investigate the effect of cytokine C-C motif chemokine ligand 21 (CCL21) on GC progression through the metastasis-associated lung adenocarcinoma transcript 1/serine arginine-rich splicing factor 1/mammalian target of rapamycin (MALAT1/SRSF1/mTOR) axis. METHODS Bioinformatics analysis was conducted to identify the key genes associated with GC and to subsequently predict their downstream genes. The effect of CCL21, MALAT1, and SRSF1 on the malignant phenotypes and epithelial-mesenchymal transition (EMT) of SGC-7901 and MGC-803 cells in-vitro and the tumorigenesis of SGC-7901 and MGC-803 cells in-vivo were assessed by expression determination and plasmid transfection. Additionally, RNA pull-down and RNA binding protein immunoprecipitation experiments were performed to determine the MALAT1-microRNA-202-3p (miR-203-3p) interaction and miR-202-3p-SRSF1 interaction followed by the analysis of their effect on the mTOR pathway. RESULTS CCL21 was identified as a key GC immune gene. Overexpressed CCL21, MALAT1, and SRSF1 along with poorly expressed miR-202-3p were identified in the GC cells. CCL21 induced the MALAT1 expression in a time- and dose-dependent manner. Functionally, MALAT1 targeted miR-202-3p but upregulated SRSF1 and activated mTOR. Crucially, evidence was obtained indicating that CCL21 promoted both the malignant phenotypes and EMT of SGC-7901 and MGC-803 cells in-vitro and the tumorigenesis of SGC-7901 and MGC-803 cells in-vivo by increasing the MALAT1-induced upregulation of SRSF1. CONCLUSIONS Taken together, the key observations of our study provide evidence that CCL21 enhances the progression of GC via the MALAT1/SRSF1/mTOR axis, providing a novel therapeutic target for the treatment of GC.
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Affiliation(s)
- Qianmei Fu
- Oncology Department, The People's Hospital of Kaizhou District, Chongqing, 405400, People's Republic of China.,General Surgery Department, The People's Hospital of Kaizhou District, Chongqing, 405400, People's Republic of China
| | - Xiaohong Tan
- Oncology Department, The People's Hospital of Kaizhou District, Chongqing, 405400, People's Republic of China.,General Surgery Department, The People's Hospital of Kaizhou District, Chongqing, 405400, People's Republic of China
| | - Huaming Tang
- General Surgery Department, The People's Hospital of Kaizhou District, Chongqing, 405400, People's Republic of China. .,Department of Gastroenterology, The People's Hospital of Kaizhou District, No. 8, Ankang Road, Kaizhou District, Chongqing, 405400, People's Republic of China.
| | - Jijiang Liu
- General Surgery Department, The People's Hospital of Kaizhou District, Chongqing, 405400, People's Republic of China. .,Department of Otorhinolaryngology, The People's Hospital of Kaizhou District, No. 8, Ankang Road, Kaizhou District, Chongqing, 405400, People's Republic of China.
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24
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Chen R, Yang F, Wang Y, Wang X, Fan X. Pharmacological inhibition of mTORC1 activity protects against inflammation-induced apoptosis of nucleus pulposus cells. ACTA ACUST UNITED AC 2021; 54:e10185. [PMID: 33729389 PMCID: PMC7959168 DOI: 10.1590/1414-431x202010185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 11/23/2020] [Indexed: 11/22/2022]
Abstract
Lumbar disc herniation is a common disease characterized by the degeneration of intervertebral discs (IVDs), accompanied by imbalance of metabolic and inflammatory homeostasis. Current studies establish that IVD degeneration is induced by increased apoptosis of nucleus pulposus (NP) cells. However, the underlying mechanisms of NP cell survival/apoptosis are not well elucidated. Here, we reveal a novel mechanism by which mTORC1 signaling controls NP cell survival through regulating metabolic homeostasis. We demonstrated that hyperactivated mTORC1 activity induced by inflammatory cytokines engenders the apoptosis of NP cells, whereas pharmacological inhibition of mTORC1 activity promotes NP cell survival. Using an integrative approach spanning metabolomics and biochemical approaches, we showed that mTORC1 activation enhanced glucose metabolism and lactic acid production, and therefore caused NP cell apoptosis. Our study identified mTORC1 in NP cells as a novel target for IVD degeneration, and provided potential strategies for clinical intervention of lumbar disc herniation.
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Affiliation(s)
- Rigao Chen
- Department of Orthopedics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fei Yang
- Department of Orthopedics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yong Wang
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xinling Wang
- Department of Orthopedics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaohong Fan
- Department of Orthopedics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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25
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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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26
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Cui F, Luo P, Bai Y, Meng J. Silencing of Long Non-Coding RNA FGD5-AS1 Inhibits the Progression of Non-Small Cell Lung Cancer by Regulating the miR-493-5p/DDX5 Axis. Technol Cancer Res Treat 2021; 20:1533033821990007. [PMID: 33550957 PMCID: PMC7876571 DOI: 10.1177/1533033821990007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background: Long non-coding RNA FGD5 antisense RNA 1 (FGD5-AS1), identified to be a carcinogenic lncRNA, exhibits a regulatory role in some malignancies including non-small cell lung cancer (NSCLC). The aim of the present research is to decipher the function and underlying mechanism of FGD5-AS1 in progression of NSCLC. Methods: Expression of FGD5-AS1, miR-493-5p and DEAD-box protein 5 (DDX5) in NSCLC tissues and cells was quantified utilizing qRT-PCR. Cell proliferation was assessed by CCK-8 method. Scratch healing test and Transwell assay were used for assaying cell migration and invasion. Expressions of DDX5 and epithelial-mesenchymal transition (EMT)-related proteins were examined by Western blot. Additionally, targeting relationships between FGD5-AS1 and miR-493-5p, miR-493-5p and DDX5 were verified by dual-luciferase reporter gene assay. Results: Expression of FGD5-AS1 in NSCLC tissues and cell lines was up-regulated. Expression of FGD5-AS1 was in association with enlarged tumor size and lymph node metastasis of the patients. Knockdown of FGD5-AS1 led to the inhibition of proliferation, migration, invasion and EMT of NSCLC cells. FGD5-AS1 directly targeted miR-493-5p, while DDX5 was the target of miR-493-5p in NSCLC cells. Additionally, FGD5-AS1 could positively regulate the expression of DDX5 via suppressing miR-493-5p. Conclusion: FGD5-AS1 facilitates the proliferation, migration, invasion and EMT of NSCLC cells by sponging miR-493-5p and up-regulating DDX5.
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Affiliation(s)
- Fang Cui
- Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Peng Luo
- Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yao Bai
- Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiangping Meng
- Assisted Reproductive Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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27
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Chen L, Xu M, Zhong W, Hu Y, Wang G. Knockdown of DDX46 suppresses the proliferation and invasion of gastric cancer through inactivating Akt/GSK-3β/β-catenin pathway. Exp Cell Res 2020; 399:112448. [PMID: 33347858 DOI: 10.1016/j.yexcr.2020.112448] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023]
Abstract
DEAD-box RNA helicase 46 (DDX46) has recently been identified as a candidate oncogene in several types of human malignancies. To date, the role of DDX46 in gastric cancer has not been determined. The purpose of the current study was to explore the role of DDX46 in gastric cancer and the potential mechanism. DDX46-silecing or overexpressing gastric cancer cell lines were established to validate the role of DDX46. Our results showed that the expression of DDX46 was significantly increased in gastric cancer tissues and cell lines. Knockdown of DDX46 suppressed the proliferation and invasion of gastric cancer cells. Whereas, DDX46 overexpression enhanced the cell proliferation and invasion of gastric cancer cells. Furthermore, knockdown of DDX46 markedly suppressed the tumor growth of xenografts. Research into the mechanism revealed that DDX46 depletion inhibited the Akt/GSK-3β/β-catenin signaling pathway in gastric cancer cells. Notably, activation of Akt or β-catenin overexpression reversed the DDX46 depletion-mediated anti-cancer effect. In conclusion, these findings indicated that DDX46 exerted an oncogenic role in gastric cancer via regulating the Akt/GSK-3β/β-catenin signaling pathway. Thus, DDX46 might be utilized as a therapeutic anti-cancer target.
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Affiliation(s)
- Lihong Chen
- International Medical Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Min Xu
- International Medical Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Wenting Zhong
- International Medical Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Yinghui Hu
- International Medical Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Guanghui Wang
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
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28
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Ma L, Zhao X, Wang S, Zheng Y, Yang S, Hou Y, Zou B, Dong L. Decreased expression of DEAD-Box helicase 5 inhibits esophageal squamous cell carcinomas by regulating endoplasmic reticulum stress and autophagy. Biochem Biophys Res Commun 2020; 533:1449-1456. [PMID: 33169694 DOI: 10.1016/j.bbrc.2020.10.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 10/11/2020] [Indexed: 12/14/2022]
Abstract
DEAD-Box Helicase 5(DDX5), also known as P68, is one of the founding members of the DEAD-Box helicase superfamily and it plays a key role in RNA metabolism. Several studies have reported that DDX5 is involved in many types of tumors through abnormal expression, but the detailed mechanism of DDX5 in esophageal squamous cell carcinoma (ESCC) has not been elucidated. In this study, we demonstrate that the level of DDX5 is a negative prognostic factor for ESCC. The obtained results indicated that decreased expression of DDX5 inhibits ESCC cell proliferation and metastasis. Further experiments suggested that CDK2, Cyclin D1 and Vimentin were downregulated, while E-cadherin was upregulated after DDX5 was knocked down. In addition, DDX5 was positively correlated with the expression of BIP, phospho-eIF2α, phospho-PERK and P62, suggesting that knockdown of DDX5 can inhibit endoplasmic reticulum(ER) stress and promote the recovery of autophagy flux. Therefore, this study demonstrates that the downregulation of DDX5 in ESSC correlates to lower malignancy and presents a novel target for the development of new treatment strategies.
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Affiliation(s)
- Lin Ma
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Xi Zhao
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Shuhui Wang
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Ying Zheng
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Suzhen Yang
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Yangfan Hou
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Baicang Zou
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Lei Dong
- Department of Digestive Disease and Gastrointestinal Motility Research Room, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China.
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29
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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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30
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Xing Z, Russon MP, Utturkar SM, Tran EJ. The RNA helicase DDX5 supports mitochondrial function in small cell lung cancer. J Biol Chem 2020; 295:8988-8998. [PMID: 32376686 PMCID: PMC7335798 DOI: 10.1074/jbc.ra120.012600] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/23/2020] [Indexed: 11/06/2022] Open
Abstract
DEAD-box helicase 5 (DDX5) is a founding member of the DEAD-box RNA helicase family, a group of enzymes that regulate ribonucleoprotein formation and function in every aspect of RNA metabolism, ranging from synthesis to decay. Our laboratory previously found that DDX5 is involved in energy homeostasis, a process that is altered in many cancers. Small cell lung cancer (SCLC) is an understudied cancer type for which effective treatments are currently unavailable. Using an array of methods, including short hairpin RNA-mediated gene silencing, RNA and ChIP sequencing analyses, and metabolite profiling, we show here that DDX5 is overexpressed in SCLC cell lines and that its down-regulation results in various metabolic and cellular alterations. Depletion of DDX5 resulted in reduced growth and mitochondrial dysfunction in the chemoresistant SCLC cell line H69AR. The latter was evidenced by down-regulation of genes involved in oxidative phosphorylation and by impaired oxygen consumption. Interestingly, DDX5 depletion specifically reduced intracellular succinate, a TCA cycle intermediate that serves as a direct electron donor to mitochondrial complex II. We propose that the oncogenic role of DDX5, at least in part, manifests as up-regulation of respiration supporting the energy demands of cancer cells.
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Affiliation(s)
- Zheng Xing
- Department of Biochemistry, Purdue University, West Lafayette, Indiana, USA
| | - Matthew P Russon
- Department of Biochemistry, Purdue University, West Lafayette, Indiana, USA
| | - Sagar M Utturkar
- Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA
| | - Elizabeth J Tran
- Department of Biochemistry, Purdue University, West Lafayette, Indiana, USA; Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA.
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Quan Z, Zhang BB, Yin F, Du J, Zhi YT, Xu J, Song N. DDX5 Silencing Suppresses the Migration of Basal cell Carcinoma Cells by Downregulating JAK2/STAT3 Pathway. Technol Cancer Res Treat 2020; 18:1533033819892258. [PMID: 31870221 PMCID: PMC6931141 DOI: 10.1177/1533033819892258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Basal cell carcinoma is driven by the aberrant activation of hedgehog signaling. DEAD
(Asp-Glu-Ala-Asp) box protein 5 is frequently overexpressed in human cancer cells and
associated with the tumor growth and invasion. The purpose of this study was to
investigate the role of DEAD (Asp-Glu-Ala-Asp) box protein 5 in the growth, migration, and
invasion of basal cell carcinoma. The role of DEAD (Asp-Glu-Ala-Asp) box protein 5 was
detected by quantitative real-time polymerase chain reaction, Western blot, and terminal
deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling assay in
basal cell carcinoma cells. The associations between JAK2/STAT3 pathway and DEAD
(Asp-Glu-Ala-Asp) box protein 5 were analyzed in basal cell carcinoma cells. Results
showed that DEAD (Asp-Glu-Ala-Asp) box protein 5 is overexpressed in basal cell carcinoma
cells. DEAD (Asp-Glu-Ala-Asp) box protein 5 knockdown inhibited the migration and invasion
of basal cell carcinoma cells. DEAD (Asp-Glu-Ala-Asp) box protein 5 knockdown increased
the apoptosis of basal cell carcinoma cells induced by tunicamycin. Results found that
DEAD (Asp-Glu-Ala-Asp) box protein 5 knockdown increased JAK2 and STAT3 expression in
basal cell carcinoma cells. JAK2 inhibitor decreased STAT3 expression and abolished the
inhibitory effects of DEAD (Asp-Glu-Ala-Asp) box protein 5 silencing on migration and
invasion in basal cell carcinoma cells. In conclusion, these results indicate that DEAD
(Asp-Glu-Ala-Asp) box protein 5 is a potential target for inhibiting basal cell carcinoma
cells growth, migration, and invasion by downregulating JAK2/STAT3 pathway.
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Affiliation(s)
- Zhe Quan
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bei-Bei Zhang
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fang Yin
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiru Du
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuan-Ting Zhi
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin Xu
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ningjing Song
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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32
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Zhao H, Xie Z, Tang G, Wei S, Chen G. Knockdown of terminal differentiation induced ncRNA (TINCR) suppresses proliferation and invasion in hepatocellular carcinoma by targeting the miR-218-5p/DEAD-box helicase 5 (DDX5) axis. J Cell Physiol 2020; 235:6990-7002. [PMID: 31994189 DOI: 10.1002/jcp.29595] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 01/13/2020] [Indexed: 12/12/2022]
Abstract
Terminal differentiation induced ncRNA (TINCR), a newly identified lncRNA, has been found to be associated with different human cancers including hepatocellular carcinoma (HCC). However, little is known regarding the pathological mechanisms of TINCR in HCC progression. In this study, we confirmed that TINCR expression was upregulated in HCC tumors and cell lines, and high TINCR expression was associated with larger tumor size, advanced tumor node metastasis stage, and poor prognosis. Functionally, knockdown of TINCR facilitated apoptosis and suppressed viability, colony formation and invasion in Huh7 and Hep3B cells. Mechanically, TINCR functioned as competing endogenous RNA (ceRNA) to regulate DEAD-box helicase 5 (DDX5) expression through sponging miR-218-5p. Moreover, the miR-218-5p expression was downregulated and DDX5 expression was upregulated in HCC tumors. The silencing of miR-218-5p or ectopic expression of DDX5 abated the tumor-suppressive effect of TINCR knockdown in vitro. Furthermore, si-TINCR-induced inactivation of AKT signaling was rescued by suppression of miR-218-5p or overexpression of DDX5. Also, the silencing of TINCR resulted in tumor growth inhibition in vivo. In summary, knockdown of TINCR suppressed HCC progression presumably by inactivation of AKT signaling through targeting the miR-218-5p/DDX5 axis, suggesting a novel TINCR/miR-218-5p/DDX5 pathway and therapy target for HCC.
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Affiliation(s)
- Huibo Zhao
- Department of Hepatobiliary and Pancreatic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Zhantao Xie
- Department of Hepatobiliary and Pancreatic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Gaofeng Tang
- Department of Hepatobiliary and Pancreatic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Sidong Wei
- Department of Hepatobiliary and Pancreatic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Guoyong Chen
- Department of Hepatobiliary and Pancreatic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
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Huang J, Chen YX, Zhang B. IGF2-AS affects the prognosis and metastasis of gastric adenocarcinoma via acting as a ceRNA of miR-503 to regulate SHOX2. Gastric Cancer 2020; 23:23-38. [PMID: 31183590 DOI: 10.1007/s10120-019-00976-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
Abstract
Disorder of long non-coding RNAs (LncRNAs) is found in various types of cancers and demonstrated to be associated with tumor occurrence and development. Our study found that lncRNA insulin growth factor 2 antisense (IGF2-AS) is up-regulated in gastric adenocarcinoma (GAC) tissues and correlated with poor prognosis in patients with GAC. Cell counting kit-8 (CCK8), colony formation, wound healing and transwell assays revealed that knockdown of IGF2-AS in BGC823 and SGC7901 cells significantly suppressed cell proliferation, migration and invasion. While, overexpression of IGF2-AS in AGS and MGC803 cells exhibited the opposite effects. RNA-FISH and subcellular fractionation assay found that most IGF2-AS was distributed in the cytoplasm, suggesting that IGF2-AS functioned as a potential ceRNA. RNA binding protein immunoprecipitation (RIP) assays further confirmed this assumption. By informatics prediction and luciferase reporter assay, we found that IGF2-AS functioned as an efficient miR-503 sponge and the level of miR-503 showed an inverse correlation with IGF2-AS. Short stature homeobox 2 (SHOX2) is predicted and verified as a target of miR-503. Moreover, IGF2-AS expression exhibited a negative correlation with miR-503 and a positive correlation with IGF2-AS. Subsequent rescue assay revealed that down-regulation of miR-503 or restoration of SHOX2 canceled IGF2-AS depletion-induced depression in proliferation and motility of BGC823 and SGC7901 cells. Meanwhile, up-regulation of miR-503 or down-regulation of SHOX2 decreased IGF2-AS overexpression induced promotion in proliferation and motility of AGS and MGC803 cells. In vivo tumorigenicity assay showed that knockdown of IGF2-AS significantly reduced tumor volume. Taken together, our results demonstrated that IGF2-AS takes important regulatory parts in GAC development by functioning as a ceRNA to regulate SHOX2 via sponging miR-503.
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Affiliation(s)
- Ju Huang
- Queen Mary School of Nanchang University, Nanchang, 330031, Jiangxi, China
| | - You-Xiang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, China
| | - Bo Zhang
- Department of Gastroenterology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, Shandong, China.
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34
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Wang J, Ding Y, Wu Y, Wang X. Identification of the complex regulatory relationships related to gastric cancer from lncRNA‐miRNA‐mRNA network. J Cell Biochem 2019; 121:876-887. [DOI: 10.1002/jcb.29332] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 07/15/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Jie Wang
- Laboratory of Media Design and Software Technology Jiangnan University Wuxi Jiangsu China
| | - Yanrui Ding
- Laboratory of Media Design and Software Technology Jiangnan University Wuxi Jiangsu China
- Key Laboratory of Industrial Biotechnology Jiangnan University Wuxi Jiangsu China
| | - Yanyan Wu
- Laboratory of Media Design and Software Technology Jiangnan University Wuxi Jiangsu China
| | - Xiaxia Wang
- Laboratory of Media Design and Software Technology Jiangnan University Wuxi Jiangsu China
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35
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Chen X, Zhang C, Wang X. Long noncoding RNA DLEU1 aggravates osteosarcoma carcinogenesis via regulating the miR-671-5p/DDX5 axis. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:3322-3328. [PMID: 31379208 DOI: 10.1080/21691401.2019.1648285] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xinxin Chen
- Department of Orthopedics, Huaihe Hospital of Henan University, Kaifeng, Henan, China
| | - Chengyong Zhang
- Department of Orthopedics, The Second People’s Hospital of Nanyang City, Nanyang, Henan, China
| | - Xiao Wang
- Department of Orthopedics, Huaihe Hospital of Henan University, Kaifeng, Henan, China
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36
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Shi L, Wu Z, Miao J, Du S, Ai S, Xu E, Feng M, Song J, Guan W. Adenosine interaction with adenosine receptor A2a promotes gastric cancer metastasis by enhancing PI3K-AKT-mTOR signaling. Mol Biol Cell 2019; 30:2527-2534. [PMID: 31339445 PMCID: PMC6743355 DOI: 10.1091/mbc.e19-03-0136] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The accumulation of adenosine in the tumor microenvironment is associated with tumor progression in many cancers. However, whether adenosine is involved in gastric cancer (GC) metastasis and progression, and the underlying molecular mechanism, is largely unclear. In this study, we find that GC tissues and cell lines had higher A2aR levels than nontumor gastric tissues and cell lines. A2aR expression correlated positively with TNMstage, and associated with poor outcomes. Adenosine enhanced the expression of the stemness and epithelial-mesenchymal transition-associated genes by binding to A2aR. A2aR expression on GC cells promoted metastasis in vivo. The PI3K-AKT-mTOR signaling pathway was involved in adenosine-stimulated GC cell migration and invasion. Our results indicate that adenosine promotes GC cell invasion and metastasis by interacting with A2aR to enhance PI3K-AKT-mTOR pathway signaling.
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Affiliation(s)
- Linsen Shi
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221006, People's Republic of China.,The Affiliated Nanjing Drum Tower Clinical College of Nanjing Medical University, Nanjing 210002, People's Republic of China
| | - Zhaoying Wu
- Xuzhou Medical University, Xuzhou 221006, People's Republic of China
| | - Ji Miao
- Department of Gastrointestinal Surgery, The Affiliated Drum Tower Hospital of Nanjing University, Nanjing 210000, People's Republic of China
| | - Shangce Du
- The Affiliated Nanjing Drum Tower Clinical College of Nanjing Medical University, Nanjing 210002, People's Republic of China
| | - Shichao Ai
- Nanjing University, Nanjing 21000, People's Republic of China
| | - En Xu
- Nanjing University, Nanjing 21000, People's Republic of China
| | - Min Feng
- Department of Gastrointestinal Surgery, The Affiliated Drum Tower Hospital of Nanjing University, Nanjing 210000, People's Republic of China
| | - Jun Song
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221006, People's Republic of China.,Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou 221006, People's Republic of China
| | - Wenxian Guan
- The Affiliated Nanjing Drum Tower Clinical College of Nanjing Medical University, Nanjing 210002, People's Republic of China.,Department of Gastrointestinal Surgery, The Affiliated Drum Tower Hospital of Nanjing University, Nanjing 210000, People's Republic of China
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37
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Zhang C, Ma MH, Liang Y, Wu KZ, Dai DQ. Novel long non-coding RNA LINC02532 promotes gastric cancer cell proliferation, migration, and invasion in vitro. World J Gastrointest Oncol 2019; 11:91-101. [PMID: 30788037 PMCID: PMC6379752 DOI: 10.4251/wjgo.v11.i2.91] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 12/22/2018] [Accepted: 01/09/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) are a kind of single-stranded RNA of more than 200 nucleotides in length and have no protein-coding function. Amounting studies have indicated that lncRNAs could play a vital role in the initiation and development of cancers, including gastric cancer (GC). Considering the crucial functions of lncRNAs, the identification and exploration of novel lncRNAs in GC is necessary.
AIM To explore the role of novel lncRNA LINC02532 in GC.
METHODS The upregulated LINC02532 was identified by processing the GC RNA-Seq data from The Cancer Genome Atlas. The qRT-PCR assay was performed to confirm the expression levels in GC cell lines and tissues. Cell proliferation, migration, and invasion were evaluated by the cell counting kit-8, colony formation, wound healing, and Transwell assays. The miRNAs downregulated in GC and sponged by LINC02532 were identified from and predicted by the data from the Firehose and RNA22 software programs, respectively. The miRNA downstream target genes were obtained from the TargetScan, miRDB, and DIANA online tools. Gene functional enrichment analysis was carried out using the Database for Annotation, Visualization, and Integrated Discovery software in the categories of cellular components, biological processes, molecular functions, and KEGG pathways.
RESULTS The qRT-PCR assay demonstrated that the LINC02532 expression level was significantly upregulated in the GC cell lines and 52 paired tissues. Kaplan-Meier survival analysis based on The Cancer Genome Atlas data showed that patients with higher LINC02532 expression had poorer prognosis than those with lower LINC02532 expression. The correlation analysis between expression and clinicopathological features revealed that high expression of LINC02532 was associated with a high TNM stage (P = 0.008) and poor differentiation grade (P = 0.023). Functional experiments showed that LINC02532 promoted GC cell proliferation, migration, and invasion. According to the bioinformatics analysis, LINC02532 may act as a ceRNA by sponging downregulated miR-129-5p and miR-490-5p. Target genes of the two miRNAs were selected for further functional enrichment analysis. Importantly, KEGG pathway analysis showed that the genes were mainly involved in transcriptional misregulation in cancer, cell cycle, and TGF-beta, mTOR, and p53 signaling pathways.
CONCLUSION The present study suggested that LINC02532 acted as an oncogene in GC and may be a promising target for therapy and prognosis management of GC.
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Affiliation(s)
- Cheng Zhang
- Department of Gastroenterological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning Province, China
| | - Ming-Hui Ma
- Department of Gastroenterological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning Province, China
| | - Yu Liang
- Department of Gastroenterological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning Province, China
| | - Kun-Zhe Wu
- Department of Gastroenterological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning Province, China
| | - Dong-Qiu Dai
- Department of Gastroenterological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning Province, China
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38
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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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39
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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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40
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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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41
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Xue Y, Jia X, Li L, Dong X, Ling J, Yuan J, Li Q. DDX5 promotes hepatocellular carcinoma tumorigenesis via Akt signaling pathway. Biochem Biophys Res Commun 2018; 503:2885-2891. [PMID: 30119889 DOI: 10.1016/j.bbrc.2018.08.063] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 08/07/2018] [Indexed: 02/07/2023]
Abstract
The DEAD-box-protein DDX5 is an ATP-dependent RNA helicase and also acts as co-activator that contributes to progression and metastasis of various tumours. However, its expression as well as prognostic roles of DDX5 in hepatocellular carcinoma (HCC) remain elusive. In this study, we investigated clinical significance and biological functions of DDX5 in HCC. Our results suggested that DDX5 showed overexpression at both transcriptional and translational levels in HCC tissues compared with adjacent normal tissues. Moreover, DDX5 expression was demonstrated to be correlated with tumor size (p < 0.001), N stage (p = 0.013), M stage (p = 0.006), tumor differentiation (p < 0.001) and American Joint Committee on Cancer (AJCC) stage (p = 0.001). Simultaneously, high DDX5 expression was found to be significantly correlated to worse outcome including Disease free survival (DFS) (p = 0.016) and overall survival (OS) (p = 0.032) according to Kaplan-Meier survival analysis. In vitro studies, it suggested that knockdown of DDX5 suppressed HCC cells migration, invasion and epithelial -to- mesenchymal transition (EMT) process. Depletion of DDX5 could promote HCC cells growth. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis showed that PI3K/Akt signaling pathway obtained the highest enrichment. Furthermore, we found that knockdown of DDX5 decreased Akt as well as p-Akt (S473) expressions. Collectively, these findings suggested that DDX5 facilitated HCC cells growth via Akt signaling pathway. DDX5 played a crucial role in HCC proliferation and tumorigenesis and may be a novel prognostic marker and potential therapeutic target for HCC.
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Affiliation(s)
- Ying Xue
- Cancer Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou, Shanghai, 200080, China
| | - Xuebing Jia
- Cancer Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou, Shanghai, 200080, China
| | - Lei Li
- Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Xiao Dong
- Cancer Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou, Shanghai, 200080, China
| | - Jing Ling
- Cancer Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou, Shanghai, 200080, China
| | - Jian Yuan
- Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai, 200120, China; Key Laboratory of Arrhythmias of the Ministry of Education of China, East Hospital, Tongji University School of Medicine, Shanghai, 200120, China; Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA; Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Qi Li
- Cancer Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Hongkou, Shanghai, 200080, China.
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42
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Wu N, Han Y, Liu H, Jiang M, Chu Y, Cao J, Lin J, Liu Y, Xu B, Xie X. miR-5590-3p inhibited tumor growth in gastric cancer by targeting DDX5/AKT/m-TOR pathway. Biochem Biophys Res Commun 2018; 503:1491-1497. [PMID: 30029874 DOI: 10.1016/j.bbrc.2018.07.068] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 07/12/2018] [Indexed: 12/17/2022]
Abstract
Recent evidence suggests that microRNAs play important roles in the negative post-transcriptional regulators with altered expression levels found in gastric cancer (GC). Therefore, we employed explore the anti-cancer miRNA and the potential mechanisms by which miRNAs modulate GC progression. We have predicted GC miRNA expression data sets in TargetScan. miR-5590-3p is higher in adjacent nonmalignant tissue than in cancer tissue in 42 pairs of GC tissues. Functional assays, CCK-8 and colony formation assay, were used to determine the Anti-cancer role of miR-5590-3p in human GC progression. In addition, Ago2-based RIP and dual-luciferase reporter assay were conducted to study the miR-5590-3p as a direct target of DDX5. Next, Xenograft nude mouse models were used to determine the role of miR-5590-3p in GC tumorigenicity in vivo. Upregulation of miR-5590-3p suppressed GC cell proliferation, whereas downregulation of miR-5590-3p promoted GC proliferation in vitro. Furthermore, we identified DDX5 as a direct target of miR-5590-3p, and that the biological function of miR-5590-3p during GC progression in vitro and in vivo is through the DDX5/AKT/m-TOR pathway and downstream cyclinD1 and CDK2 expression. Finally, we confirmed the effect of miR-5590-3p directly targeting DDX5 on the development of gastric cancer through salvage experiments in vivo and in vitro.
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Affiliation(s)
- Nan Wu
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, 229 Tai Bai North Road, Xi'an, Shaanxi, 710069, China.
| | - Yuying Han
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, 229 Tai Bai North Road, Xi'an, Shaanxi, 710069, China.
| | - Haiming Liu
- College of Computer Science and Technology, Jilin University, Changchun, Jilin, 130012, China.
| | - Mingzuo Jiang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
| | - Yi Chu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
| | - Jiayi Cao
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, 229 Tai Bai North Road, Xi'an, Shaanxi, 710069, China.
| | - Junchao Lin
- Shaanxi University of Chinese Medicine, Xi'an, Shaanxi, 710032, China.
| | - Yuanning Liu
- College of Computer Science and Technology, Jilin University, Changchun, Jilin, 130012, China.
| | - Bing Xu
- Department of Gastroenterology, Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi, 710004, China.
| | - Xin Xie
- Laboratory of Tissue Engineering, Faculty of Life Science, Northwest University, 229 Tai Bai North Road, Xi'an, Shaanxi, 710069, China.
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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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Zhang YQ, Zhang JJ, Song HJ, Li DW. Overexpression of CST4 promotes gastric cancer aggressiveness by activating the ELFN2 signaling pathway. Am J Cancer Res 2017; 7:2290-2304. [PMID: 29218251 PMCID: PMC5714756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 10/11/2017] [Indexed: 06/07/2023] Open
Abstract
Gastric cancer is one of the most lethal malignancies of gastrointestinal cancer and its prognosis remains dismal because of the paucity of effective therapeutic targets. Here, we show that cystatin 4 (CST4) is markedly upregulated in gastric cancer cell lines and clinical tissues. Ectopic expression of CST4 in gastric cancer cells promoted proliferation, migration, and invasion of gastric cancer cells in vitro. Furthermore, CST4 overexpression significantly promoted the tumorigenicity of gastric cancer cells in vivo, whereas silencing endogenous CST4 caused an opposite outcome. In addition, extracellular leucine rich repeat and fibronectin type III domain containing 2 (ELFN2) was identified as a downstream target of CST4 in gastric cancer cells and was positively correlated with ELFN2 expression in gastric cancer tissues. Finally, we demonstrated that CST4 enhanced gastric cancer aggressiveness by regulating ELFN2 signaling. Together, our results provide new evidence that CST4 overexpression promotes the progression of gastric cancer and might represent a novel therapeutic target for its treatment.
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Affiliation(s)
- Yi Qiang Zhang
- Department of Gastroenterology, Zhumadian Central Hospital of Henan ProvinceZhumadian, China
| | - Jing Jing Zhang
- Department of Laboratory Medicine, The Third Hospital of Xinxiang Medical UniversityXinxiang, China
| | - Hong Jie Song
- Department of Gastroenterology, Zhumadian Central Hospital of Henan ProvinceZhumadian, China
| | - Da Wei Li
- Department of Gastroenterology, Zhumadian Central Hospital of Henan ProvinceZhumadian, China
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