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Zheng B, Chen X, Ling Q, Cheng Q, Ye S. Role and therapeutic potential of DEAD-box RNA helicase family in colorectal cancer. Front Oncol 2023; 13:1278282. [PMID: 38023215 PMCID: PMC10654640 DOI: 10.3389/fonc.2023.1278282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023] Open
Abstract
Colorectal cancer (CRC) is the third most commonly diagnosed and the second cancer-related death worldwide, leading to more than 0.9 million deaths every year. Unfortunately, this disease is changing rapidly to a younger age, and in a more advanced stage when diagnosed. The DEAD-box RNA helicase proteins are the largest family of RNA helicases so far. They regulate almost every aspect of RNA physiological processes, including RNA transcription, editing, splicing and transport. Aberrant expression and critical roles of the DEAD-box RNA helicase proteins have been found in CRC. In this review, we first summarize the protein structure, cellular distribution, and diverse biological functions of DEAD-box RNA helicases. Then, we discuss the distinct roles of DEAD-box RNA helicase family in CRC and describe the cellular mechanism of actions based on recent studies, with an aim to provide future strategies for the treatment of CRC.
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Affiliation(s)
- Bichun Zheng
- Department of Anorectal Surgery, The Affiliated People’s Hospital of Ningbo University, Ningbo, China
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2
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Tang LF, Ma X, Xie LW, Zhou H, Yu J, Wang ZX, Li M. Perillaldehyde Mitigates Ionizing Radiation-Induced Intestinal Injury by Inhibiting Ferroptosis via the Nrf2 Signaling Pathway. Mol Nutr Food Res 2023; 67:e2300232. [PMID: 37658487 DOI: 10.1002/mnfr.202300232] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/12/2023] [Indexed: 09/03/2023]
Abstract
SCOPE Gastrointestinal toxicity is one of the major side effects of abdominopelvic tumor radiotherapy. Studies have shown that perillaldehyde (PAH) has antioxidant, antiinflammatory, antimicrobial activity, and antitumor effects. This study aims to determine whether PAH has radioprotective effects on radiation-induced intestinal injury and explore the underlying mechanisms. METHODS AND RESULTS C57BL/6J mice are gavaged with PAH for 7 days, then exposed to a single dose of 13 Gy X-ray total abdominal irradiation (TAI). PAH treatment prolongs the survival time, promotes the survival of crypt cells, attenuates radiation-induced DNA damage, and mitigates intestinal barrier damage in the irradiated mice. PAH also shows radioprotective effects in intestinal crypt organoids and human intestinal epithelial cells (HIEC-6). PAH-mediated radioprotection is associated with the upregulation of nuclear factor erythroid-2 related factor 2 (Nrf2), activation of the antioxidant pathway, and inhibition of ferroptosis. Notably, treatment with the Nrf2 inhibitor ML385 abolishes the protective effects of PAH, indicating that Nrf2 activation is essential for PAH activity. CONCLUSION PAH inhibits ionizing radiation (IR)-induced ferroptosis and attenuates intestinal injury after irradiation by activating Nrf2 signaling. Therefore, PAH is a promising therapeutic strategy for IR-induced intestinal injury.
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Affiliation(s)
- Lin-Feng Tang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
- The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Xiaoming Ma
- Department of General Surgery, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, Jiangsu, 223800, China
| | - Li-Wei Xie
- The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Hao Zhou
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Jiahua Yu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Zhen-Xin Wang
- Department of Medical Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Ming Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
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Shibamoto J, Arita T, Konishi H, Kataoka S, Furuke H, Takaki W, Kiuchi J, Shimizu H, Yamamoto Y, Komatsu S, Shiozaki A, Kuriu Y, Otsuji E. Roles of miR-4442 in Colorectal Cancer: Predicting Early Recurrence and Regulating Epithelial-Mesenchymal Transition. Genes (Basel) 2023; 14:1414. [PMID: 37510319 PMCID: PMC10378884 DOI: 10.3390/genes14071414] [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: 05/26/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Early recurrence in patients with colorectal cancer (CRC) is associated with a poor prognosis. We aimed to identify circulating microRNAs that are biomarkers of early CRC recurrence and elucidate their functions. We identified miR-4442 as a candidate biomarker by microRNA array analysis comparing preoperative and postoperative plasma levels in patients with CRC, with and without recurrence. The association between preoperative plasma miR-4442 levels, clinicopathological features, and recurrence-free survival was analyzed in 108 patients with CRC after curative surgery. Furthermore, cell-function analyses were performed, and the involvement of miR-4442 in regulating epithelial-mesenchymal transition (EMT) was examined. Preoperatively plasma miR-4442 levels were associated with CRC recurrence and exhibited an incremental increase with earlier recurrence dates. Moreover, miR-4442 demonstrated high sensitivity and specificity as a potential biomarker for early CRC recurrence. The expression of miR-4442 in cancer tissues of patients with metastatic liver cancer from CRC was higher than in normal liver, CRC, and normal colorectal tissues. The overexpression of miR-4442 promoted the proliferative, migratory, and invasive activities of CRC cells, decreased levels of RBMS1 and E-cadherin, and increased levels of N-cadherin and Snail1. Plasma miR-4442 is a clinically useful biomarker for predicting the early recurrence of CRC. Furthermore, miR-4442 regulates EMT in CRC by directly targeting the messenger RNA of RBMS1.
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Affiliation(s)
| | - Tomohiro Arita
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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Ma Z, Song J, Hua Y, Wang Y, Cao W, Wang H, Hou L. The role of DDX46 in breast cancer proliferation and invasiveness: A potential therapeutic target. Cell Biol Int 2023; 47:283-291. [PMID: 36200534 DOI: 10.1002/cbin.11930] [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: 09/14/2022] [Accepted: 09/24/2022] [Indexed: 01/19/2023]
Abstract
DDX46, a member of DEAD-box (DDX) proteins, is associated with various cancers, while its involvement in the pathogenesis of breast cancer hasn't been reported so far. The study demonstrated the overexpression of DDX46 in human breast cancer cells and tissue samples, and correlated with high histological grade and lymph node metastasis. Downregulation of DDX46 in the breast cancer cell lines inhibited their proliferation and invasiveness in vitro. Furthermore, the growth of MDA-MB-231 xenografts was suppressed in nude mice by DDX46 knockingdown. Taken together, our findings suggest that DDX46 is an oncogenic factor in human breast cancer, and a potential therapeutic target.
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Affiliation(s)
- Zhongliang Ma
- Department of Breast Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jinlian Song
- Department of Laboratory, Qingdao University Affiliated Qingdao Women and Childrens Hospital, Qingdao, China
| | - Yanan Hua
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yu Wang
- Department of Breast Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Weihong Cao
- Department of Breast Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Haibo Wang
- Department of Breast Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lin Hou
- Department of Biochemistry and Molecular Biology, Qingdao University Medical College
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5
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Zhou H, Tang L, Shang ZF, Zhou PK, Li M. PIG3 downregulation enhances the radio sensitivity of NSCLC cells by promoting G2/M cell cycle arrest and apoptosis. RADIATION MEDICINE AND PROTECTION 2022. [DOI: 10.1016/j.radmp.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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6
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Zhou H, Zhou YL, Mao JA, Tang LF, Xu J, Wang ZX, He Y, Li M. NCOA4-mediated ferritinophagy is involved in ionizing radiation-induced ferroptosis of intestinal epithelial cells. Redox Biol 2022; 55:102413. [PMID: 35932693 PMCID: PMC9356278 DOI: 10.1016/j.redox.2022.102413] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/14/2022] [Accepted: 07/16/2022] [Indexed: 12/11/2022] Open
Abstract
Ferroptosis is a newly recognized form of regulated cell death that is characterized by severe lipid peroxidation initiated by iron overload and the generation of reactive oxygen species (ROS). However, the role of iron in ionizing radiation (IR)-induced intestinal injury has not been fully illustrated yet. In this study, we found that IR induced ferroptosis in intestinal epithelial cells, as indicated by the increase in intracellular iron levels and lipid peroxidation, upregulation of prostaglandin-endoperoxide synthase 2 (PTGS2) mRNA, reduced glutathione peroxidase 4 (GPX4) mRNA and glutathione (GSH) levels, and significant mitochondrial damage. In addition, the iron chelator deferoxamine (DFO) attenuated IR-induced ferroptosis and intestinal injury in vitro and in vivo. Intriguingly, pharmacological inhibition of autophagy with 3-methyladenine (3-MA) mitigated IR-induced ferritin downregulation, iron overload and ferroptosis. IR increased the levels of nuclear receptor coactivator 4 (NCOA4) mRNA and protein. NCOA4 knockdown significantly inhibited the reduction of ferritin, decreased the level of intracellular free iron, and mitigated ferroptosis induced by IR in HIEC cells, indicating that NCOA4-mediated autophagic degradation of ferritin (ferritinophagy) was required for IR-induced ferroptosis. Furthermore, cytoplasmic iron further activated mitoferrin2 (Mfrn2) on the mitochondrial membrane, which in turn increased iron transport into the mitochondria, resulting in increased ROS production and ferroptosis. In addition, mice fed with an iron-deficient diet for 3 weeks showed a significant reversal in the intestinal injury induced by abdominal IR exposure. Taken together, ferroptosis is a novel mechanism of IR-induced intestinal epithelial cytotoxicity, and is dependent on NCOA4-mediated ferritinophagy.
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Affiliation(s)
- Hao Zhou
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Ya-Li Zhou
- MOE Engineering Center of Hematological Disease, Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, China
| | - Jiu-Ang Mao
- Department of Medical Oncology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Lin-Feng Tang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Jie Xu
- MOE Engineering Center of Hematological Disease, Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, China
| | - Zhen-Xin Wang
- Department of Medical Oncology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
| | - Yang He
- MOE Engineering Center of Hematological Disease, Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, China.
| | - Ming Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China.
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Bonaventure B, Goujon C. DExH/D-box helicases at the frontline of intrinsic and innate immunity against viral infections. J Gen Virol 2022; 103. [PMID: 36006669 DOI: 10.1099/jgv.0.001766] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
Abstract
DExH/D-box helicases are essential nucleic acid and ribonucleoprotein remodelers involved in all aspects of nucleic acid metabolism including replication, gene expression and post-transcriptional modifications. In parallel to their importance in basic cellular functions, DExH/D-box helicases play multiple roles in viral life cycles, with some of them highjacked by viruses or negatively regulating innate immune activation. However, other DExH/D-box helicases have recurrently been highlighted as direct antiviral effectors or as positive regulators of innate immune activation. Innate immunity relies on the ability of Pathogen Recognition Receptors to recognize viral signatures and trigger the production of interferons (IFNs) and pro-inflammatory cytokines. Secreted IFNs interact with their receptors to establish antiviral cellular reprogramming via expression regulation of the interferon-stimulated genes (ISGs). Several DExH/D-box helicases have been reported to act as viral sensors (DDX3, DDX41, DHX9, DDX1/DDX21/DHX36 complex), and others to play roles in innate immune activation (DDX60, DDX60L, DDX23). In contrast, the DDX39A, DDX46, DDX5 and DDX24 helicases act as negative regulators and impede IFN production upon viral infection. Beyond their role in viral sensing, the ISGs DDX60 and DDX60L act as viral inhibitors. Interestingly, the constitutively expressed DEAD-box helicases DDX56, DDX17, DDX42 intrinsically restrict viral replication. Hence, DExH/D-box helicases appear to form a multilayer network of primary and secondary factors involved in both intrinsic and innate antiviral immunity. In this review, we highlight recent findings on the extent of antiviral defences played by helicases and emphasize the need to better understand their immune functions as well as their complex interplay.
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Affiliation(s)
- Boris Bonaventure
- IRIM, CNRS, Montpellier University, France.,Present address: Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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8
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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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9
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Zhou X, Liu Z, He T, Zhang C, Jiang M, Jin Y, Wu Z, Gu C, Zhang W, Yang X. DDX10 promotes the proliferation and metastasis of colorectal cancer cells via splicing RPL35. Cancer Cell Int 2022; 22:58. [PMID: 35109823 PMCID: PMC8812018 DOI: 10.1186/s12935-022-02478-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 01/19/2022] [Indexed: 12/24/2022] Open
Abstract
Background Colorectal cancer (CRC) has become the second deadliest cancer in the world and severely threatens human health. An increasing number of studies have focused on the role of the RNA helicase DEAD-box (DDX) family in CRC. However, the mechanism of DDX10 in CRC has not been elucidated. Methods In our study, we analysed the expression data of CRC samples from the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases. Subsequently, we performed cytological experiments and animal experiments to explore the role of DDX10 in CRC cells. Furthermore, we performed Gene Ontology (GO)/Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis and protein–protein interaction (PPI) network analyses. Finally, we predicted the interacting protein of DDX10 by LC–MS/MS and verified it by coimmunoprecipitation (Co-IP) and qPCR. Results In the present study, we identified that DDX10 mRNA was extremely highly expressed in CRC tissues compared with normal colon tissues in the TCGA and GEO databases. The protein expression of DDX10 was measured by immunochemistry (IHC) in 17 CRC patients. The biological roles of DDX10 were explored via cell and molecular biology experiments in vitro and in vivo and cell cycle assays. We found that DDX10 knockdown markedly reduced CRC cell proliferation, migration and invasion. Then, we constructed a PPI network with the Search Tool for the Retrieval of Interacting Genes/Proteins (STRING). GO and KEGG enrichment analysis and gene set enrichment analysis (GSEA) showed that DDX10 was closely related to RNA splicing and E2F targets. Using LC–MS/MS and Co-IP assays, we discovered that RPL35 is the interacting protein of DDX10. In addition, we hypothesize that RPL35 is related to the E2F pathway and the immune response in CRC. Conclusions In conclusion, provides a better understanding of the molecular mechanisms of DDX10 in CRC and provides a potential biomarker for the diagnosis and treatment of CRC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-022-02478-1.
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Affiliation(s)
- Xin Zhou
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Zhihong Liu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Tengfei He
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Cuifeng Zhang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Manman Jiang
- Soochow University, 1 Shizi Street, Suzhou, China
| | - Yuxiao Jin
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Ziyu Wu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Changji Gu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China
| | - Wei Zhang
- Department of Radiotherapy, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China.
| | - Xiaodong Yang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China.
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10
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Kiel C, Strunz T, Hasler D, Meister G, Grassmann F, Weber BHF. Seed sequence polymorphism rs2168518 and allele-specific target gene regulation of hsa-miR-4513. Hum Mol Genet 2021; 31:875-887. [PMID: 34605899 PMCID: PMC8947236 DOI: 10.1093/hmg/ddab292] [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: 03/28/2021] [Revised: 09/08/2021] [Accepted: 09/28/2021] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs (miRNAs) are small post-transcriptional regulators that offer promising targets for treating complex diseases. To this end, hsa-miR-4513 is an excellent candidate as this gene harbors within its conserved heptametrical seed sequence a frequent polymorphism (rs2168518), which has previously been associated with several complex phenotypes. So far, little is known about the biological mechanism(s) underlying these associations. In an initial step, we now aimed to identify allele-specific target genes of hsa-miR-4513. We performed RNA sequencing in a miRNA overexpression model in human umbilical vein endothelial cells transfected with separated hsa-miR-4513 alleles at rs2168518, namely hsa-miR-4513-G and hsa-miR-4513-A. Genes specifically regulated by the rs2168518 alleles were independently verified by quantitative reverse transcription PCR (qRT-PCR), western blot analysis and allele-specific miRNA binding via a luciferase reporter assay. By a text-based search publicly available databases such as Online Mendelian Inheritance in Man and Mouse Genome Informatics were utilized to link target genes of hsa-miR-4513 to previously described phenotypes. Overall, we identified 23 allele-specific hsa-miR-4513 target genes and replicated 19 of those independently via qRT-PCR. Western blot analysis and luciferase reporter assays conducted for an exemplary subsample further confirmed the allele-specific regulation of these genes by hsa-miR-4513. Remarkably, multiple allele-specific target genes identified are linked via text retrieval to several phenotypes previously reported to be associated with hsa-miR-4513. These genes offer promising candidates for ongoing research on the functional pathobiological impact of hsa-miR-4513 and its seed polymorphism rs2168518. This could give rise to therapeutic applications targeting this miRNA.
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Affiliation(s)
- Christina Kiel
- Institute of Human Genetics, University of Regensburg, 93053 Regensburg, Germany
| | - Tobias Strunz
- Institute of Human Genetics, University of Regensburg, 93053 Regensburg, Germany
| | - Daniele Hasler
- Regensburg Center for Biochemistry (RCB), Laboratory for RNA Biology, University of Regensburg, 93053 Regensburg, Germany
| | - Gunter Meister
- Regensburg Center for Biochemistry (RCB), Laboratory for RNA Biology, University of Regensburg, 93053 Regensburg, Germany
| | - Felix Grassmann
- Institute of Human Genetics, University of Regensburg, 93053 Regensburg, Germany.,Institute of Medical Sciences, University of Aberdeen, King's College, Aberdeen, AB24 3FX, UK
| | - Bernhard H F Weber
- Institute of Human Genetics, University of Regensburg, 93053 Regensburg, Germany.,Institute of Clinical Human Genetics, University Hospital Regensburg, 93053 Regensburg, Germany
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Integrated Bioinformatics Analysis Reveals Marker Genes and Potential Therapeutic Targets for Pulmonary Arterial Hypertension. Genes (Basel) 2021; 12:genes12091339. [PMID: 34573320 PMCID: PMC8467453 DOI: 10.3390/genes12091339] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/18/2021] [Accepted: 08/27/2021] [Indexed: 12/15/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a rare cardiovascular disease with very high mortality rate. The currently available therapeutic strategies, which improve symptoms, cannot fundamentally reverse the condition. Thus, new therapeutic strategies need to be established. Our research analyzed three microarray datasets of lung tissues from human PAH samples retrieved from the Gene Expression Omnibus (GEO) database. We combined two datasets for subsequent analyses, with the batch effects removed. In the merged dataset, 542 DEGs were identified and the key module relevant to PAH was selected using WGCNA. GO and KEGG analyses of DEGs and the key module indicated that the pre-ribosome, ribosome biogenesis, centriole, ATPase activity, helicase activity, hypertrophic cardiomyopathy, melanoma, and dilated cardiomyopathy pathways are involved in PAH. With the filtering standard (|MM| > 0.95 and |GS| > 0.90), 70 hub genes were identified. Subsequently, five candidate marker genes (CDC5L, AP3B1, ZFYVE16, DDX46, and PHAX) in the key module were found through overlapping with the top thirty genes calculated by two different methods in CytoHubb. Two of them (CDC5L and DDX46) were found to be significantly upregulated both in the merged dataset and the validating dataset in PAH patients. Meanwhile, expression of the selected genes in lung from PAH chicken measured by qRT-PCR and the ROC curve analyses further verified the potential marker genes' predictive value for PAH. In conclusion, CDC5L and DDX46 may be marker genes and potential therapeutic targets for PAH.
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12
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DEAD-Box RNA Helicases in Cell Cycle Control and Clinical Therapy. Cells 2021; 10:cells10061540. [PMID: 34207140 PMCID: PMC8234093 DOI: 10.3390/cells10061540] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 12/11/2022] Open
Abstract
Cell cycle is regulated through numerous signaling pathways that determine whether cells will proliferate, remain quiescent, arrest, or undergo apoptosis. Abnormal cell cycle regulation has been linked to many diseases. Thus, there is an urgent need to understand the diverse molecular mechanisms of how the cell cycle is controlled. RNA helicases constitute a large family of proteins with functions in all aspects of RNA metabolism, including unwinding or annealing of RNA molecules to regulate pre-mRNA, rRNA and miRNA processing, clamping protein complexes on RNA, or remodeling ribonucleoprotein complexes, to regulate gene expression. RNA helicases also regulate the activity of specific proteins through direct interaction. Abnormal expression of RNA helicases has been associated with different diseases, including cancer, neurological disorders, aging, and autosomal dominant polycystic kidney disease (ADPKD) via regulation of a diverse range of cellular processes such as cell proliferation, cell cycle arrest, and apoptosis. Recent studies showed that RNA helicases participate in the regulation of the cell cycle progression at each cell cycle phase, including G1-S transition, S phase, G2-M transition, mitosis, and cytokinesis. In this review, we discuss the essential roles and mechanisms of RNA helicases in the regulation of the cell cycle at different phases. For that, RNA helicases provide a rich source of targets for the development of therapeutic or prophylactic drugs. We also discuss the different targeting strategies against RNA helicases, the different types of compounds explored, the proposed inhibitory mechanisms of the compounds on specific RNA helicases, and the therapeutic potential of these compounds in the treatment of various disorders.
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13
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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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14
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Lin Q, Jin HJ, Zhang D, Gao L. DDX46 silencing inhibits cell proliferation by activating apoptosis and autophagy in cutaneous squamous cell carcinoma. Mol Med Rep 2020; 22:4236-4242. [PMID: 33000271 PMCID: PMC7533510 DOI: 10.3892/mmr.2020.11509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 03/13/2020] [Indexed: 12/16/2022] Open
Abstract
DEAD-Box Helicase 46 (DDX46) is an ATP-dependent RNA helicase that plays a central role in transcription splicing and ribosome assembly. However, the role of DDX46 in cutaneous squamous cell carcinoma (CSCC) remains to be elucidated. The aim of the present study was to investigate the role of DDX46 in CSCC by assessing DDX46 expression levels in CSCC tissues and cell lines. The effect of DDX46 silencing on CSCC cell proliferation, apoptosis and autophagy were also analyzed. It was demonstrated that DDX46 was significantly overexpressed in CSCC tissues and cells (P<0.05). Furthermore, it was found that DDX46 silencing could dramatically inhibit cell proliferation (P<0.05). Moreover, cell apoptosis and autophagy were activated in DDX46 silencing groups (P<0.05). Therefore, the present results suggested that DDX46 was overexpressed in CSCC and that DDX46 silencing can inhibit cell proliferation by inducing apoptosis and activating autophagy. Thus, DDX46 may serve as a novel potential therapeutic target for CSCC.
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Affiliation(s)
- Quan Lin
- Department of Plastic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hong-Juan Jin
- Department of Plastic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Duo Zhang
- Department of Plastic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ling Gao
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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15
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You X, Cui H, Yu N, Li Q. Knockdown of DDX46 inhibits trophoblast cell proliferation and migration through the PI3K/Akt/mTOR signaling pathway in preeclampsia. Open Life Sci 2020; 15:400-408. [PMID: 33817228 PMCID: PMC7874595 DOI: 10.1515/biol-2020-0043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/02/2020] [Accepted: 05/03/2020] [Indexed: 12/22/2022] Open
Abstract
Preeclampsia (PE) is a serious disease during pregnancy associated with the dysfunction of trophoblast cell invasion. DDX46 is a kind of RNA helicase that has been found to regulate cancer cell metastasis. However, the role of DDX46 in PE remains unclear. Our results showed that the mRNA levels of DDX46 in placental tissues of pregnant women with PE were markedly lower than those in normal pregnancies. Loss-of-function assays showed that knockdown of DDX46 significantly suppressed cell proliferation of trophoblast cells. Besides, DDX46 knockdown decreased trophoblast cell migration and invasion capacity. In contrast, the overexpression of DDX46 promoted the migration and invasion of trophoblast cells. Furthermore, knockdown of DDX46 caused significant decrease in the levels of p-PI3K, p-Akt, and p-mTOR in HTR-8/SVneo cells. In addition, treatment with IGF-1 reversed the inhibitory effects of DDX46 knockdown on proliferation, migration, and invasion of HTR-8/SVneo cells. In conclusion, these data suggest that DDX46 might be involved in the progression of PE, which might be attributed to the regulation of PI3K/Akt/mTOR signaling pathway. Thus, DDX46 might serve as a therapeutic target for the treatment of PE.
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Affiliation(s)
- Xin You
- Department of Obstetrics, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
| | - Hongyan Cui
- Department of Obstetrics, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
| | - Ning Yu
- Department of Obstetrics, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
| | - Qiuli Li
- Department of Laboratory, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
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16
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An Y, Zhang J, Cheng X, Li B, Tian Y, Zhang X, Zhao F. miR-454 suppresses the proliferation and invasion of ovarian cancer by targeting E2F6. Cancer Cell Int 2020; 20:237. [PMID: 32536825 PMCID: PMC7291497 DOI: 10.1186/s12935-020-01300-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/27/2020] [Indexed: 12/12/2022] Open
Abstract
Background The aberrant expression of microRNA-454 (miR-454) has been confirmed to be involved in the development of cancers. However, the functional role of miR-454 in the progression of ovarian cancer remains unclear. Methods The expression of miR-454 in ovarian cancer cells and serum of ovarian cancer patients was detected by RT-PCR. CCK8, colony formation, transwell, and flow cytometry assays were conducted to assess the effects of miR-454 on ovarian cancer cell proliferation, migration, invasion, and apoptosis, respectively. Dual-luciferase reporter assay was used to confirm the targeting relationship between miR-454 and E2F6. The expression pattern of E2F6 in ovarian cancer tissues was detected using immunohistochemistry (IHC) assay. The relative expression of related proteins was examined using western blot analysis. Results miR-454 was markedly down-regulated by hypoxia in ovarian cancer cells. Compared with normal samples, the expression of miR-454 was up-regulated in the serum of ovarian cancer patients, and correlated with the clinicopathological stages of ovarian cancer. Next, we found that miR-454 overexpression inhibited the proliferation, migration and invasion of OVCAR3 and SKOV3 cells, as well as promoted apoptosis. In addition, the Akt/mTOR and Wnt/β-catenin signaling pathway were inhibited by miR-454 in ovarian cancer cells. Mechanically, bioinformatic analysis and dual-luciferase reporter assay confirmed that E2F6 was a direct target of miR-454 and negatively regulated by miR-454 in ovarian cancer cells. Moreover, IHC analysis showed that E2F6 was highly expressed in ovarian cancer tissues. Finally, we found that the increasing cell proliferation and migration triggered by E2F6 overexpression were abolished by miR-454 overexpression. Conclusion Taken together, these results highlight the role of miR-454 as a tumor suppressor in ovarian cancer cells by targeting E2F6, indicating that miR-454 may be a potential diagnostic biomarker and therapeutic target for ovarian cancer.
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Affiliation(s)
- Yunhe An
- Department of Biotechnology, Beijing Center for Physical and Chemical Analysis, No. 27 Xisanhuan North Road, Beijing, 100089 China
| | - Jun Zhang
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029 China
| | - Xiaoyan Cheng
- Department of Biotechnology, Beijing Center for Physical and Chemical Analysis, No. 27 Xisanhuan North Road, Beijing, 100089 China
| | - Baoming Li
- Department of Biotechnology, Beijing Center for Physical and Chemical Analysis, No. 27 Xisanhuan North Road, Beijing, 100089 China
| | - Yanjie Tian
- Department of Biotechnology, Beijing Center for Physical and Chemical Analysis, No. 27 Xisanhuan North Road, Beijing, 100089 China
| | - Xiaoli Zhang
- Department of Biotechnology, Beijing Center for Physical and Chemical Analysis, No. 27 Xisanhuan North Road, Beijing, 100089 China
| | - Fangqi Zhao
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029 China
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17
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Identification of novel Nrf2 target genes as prognostic biomarkers in colitis-associated colorectal cancer in Nrf2-deficient mice. Life Sci 2019; 238:116968. [PMID: 31628914 DOI: 10.1016/j.lfs.2019.116968] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/03/2019] [Accepted: 10/13/2019] [Indexed: 02/06/2023]
Abstract
AIMS Colorectal cancer (CRC) is the third most common cancer worldwide. Nuclear factor erythroid 2-related factor 2 (Nrf2), a master regulator of many cytoprotective genes, plays a protective role in carcinogenesis. Recent studies have identified a specific gene-expression signature regulated by the Nrf2 pathway in lung adenocarcinoma and head-and-neck squamous cell cancer. However, the roles of Nrf2 in the development of colitis-associated colorectal cancer (CACC) have not been well characterized. Nrf2 target genes as prognostic biomarkers in CACC remain to be explored. Thus, this work aimed to identify the molecular changes that occur during mouse CACC progression to facilitate the development of diagnostic and prognostic biomarkers. MAIN METHODS The CACC model was established using azoxymethane (AOM) with dextran sulfate sodium salt (DSS) in BALB/c mice for 3 weeks to induce colitis-associated adenoma (CAA, early stage) and for 9 weeks to induce colitis-associated carcinoma (CAC, late stage). Using RNA-sequencing and bioinformatics analyses we examined the mRNA expression profiles of 6 groups: wild-type control (WT-C), WT-CAA, WT-CAC, Nrf2 knockout control (Nrf2KO-C), Nrf2KO-CAA, and Nrf2KO-CAC. KEY FINDINGS In the AOM/DSS model of colitis-associated tumorigenesis, Nrf2-/- mice showed a phenotype similar to WT mice, but with significantly more tumors and a much higher percentage of adenocarcinomas. We identified 47 novel Nrf2 genes via gene expression profiling of tumor samples. Survival analysis showed that 23 of these genes were biomarkers of a poor prognosis in colon cancer patients. SIGNIFICANCE Nrf2 target genes deserve exploration as prognostic and therapeutic targets for CRC.
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18
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Ao N, Dai Y, Chen Q, Feng Y, Yu J, Wang C, Liu F, Li M, Liu G. Genome-Wide Profiling of the Toxic Effect of Bortezomib on Human Esophageal Carcinoma Epithelial Cells. Technol Cancer Res Treat 2019; 18:1533033819842546. [PMID: 30961474 PMCID: PMC6457034 DOI: 10.1177/1533033819842546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Objectives: Bortezomib has been widely used to treat multiple myeloma and other hematological
malignancies. However, not much is known about its effect on solid tumors. The aim of
this study was to study the effect of Bortezomib on human esophageal cancer cell lines
and investigate the potential target pathways. Methods: Two human esophageal cancer cell lines, TE-1 and KYSE-150, were used in this study.
Cell viability, cell cycle distribution, and apoptosis after Bortezomib treatment was
detected by Cell Counting Kit-8, flow cytometry, and Annexin V/propidium iodide
staining, respectively. The genes targeted by Bortezomib were analyzed at the messenger
RNA level by microarray chips and quantitative real-time polymerase chain reaction. Results: The proliferation of human esophageal cancer cell lines was inhibited by Bortezomib in
a dose- and time-dependent manner. Bortezomib treatment led to G2/M arrest
and apoptosis. Microarray chips revealed multiple signaling pathways targeted by
Bortezomib, including proteasome, endoplasmic reticulum, Wnt-, and calcium-mediated
pathway. The expression patterns of 4 representative genes UBD, CUL3, HDAC6, and GADD45A
were verified by quantitative real-time polymerase chain reaction and showed consistency
with the microarray assay. Conclusion: Bortezomib could suppress cell viability, cause G2/M arrest, and induce
apoptosis in human esophageal cancer cells, with possible targets including UBD, CUL3,
HDAC6, and GADD45A.
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Affiliation(s)
- Nannan Ao
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China.,2 Department of Radiation Oncology, Zhengzhou Yihe Hospital Affiliated to Henan University, Zhengzhou, Henan Province, People's Republic of China
| | - Yingchu Dai
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
| | - Qianping Chen
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
| | - Yang Feng
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
| | - Jingping Yu
- 3 Department of Radiation Oncology, Changzhou Second Hospital-Affiliated Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, People's Republic of China
| | - Chang Wang
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
| | - Fenju Liu
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
| | - Ming Li
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
| | - Geng Liu
- 1 State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu Province, People's Republic of China
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19
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Gu MM, Gao D, Yao PA, Yu L, Yang XD, Xing CG, Zhou J, Shang ZF, Li M. p53-inducible gene 3 promotes cell migration and invasion by activating the FAK/Src pathway in lung adenocarcinoma. Cancer Sci 2018; 109:3783-3793. [PMID: 30281878 PMCID: PMC6272089 DOI: 10.1111/cas.13818] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/18/2018] [Accepted: 09/26/2018] [Indexed: 12/13/2022] Open
Abstract
The p53-inducible gene 3 (PIG3) is one of the p53-induced genes at the onset of apoptosis, which plays an important role in cell apoptosis and DNA damage response. Our previous study reported an oncogenic role of PIG3 associated with tumor progression and metastasis in non-small cell lung cancer (NSCLC). In this study, we further analyzed PIG3 mRNA expression in 504 lung adenocarcinoma (LUAD) and 501 lung squamous cell carcinoma (LUSC) tissues from The Cancer Genome Atlas database and we found that PIG3 expression was significantly higher in LUAD with lymph node metastasis than those without, while no difference was observed between samples with and without lymph node metastasis in LUSC. Gain and loss of function experiments were performed to confirm the metastatic role of PIG3 in vitro and to explore the mechanism involved in its oncogenic role in NSCLC metastasis. The results showed that PIG3 knockdown significantly inhibited the migration and invasion ability of NSCLC cells, and decreased paxillin, phospho-focal adhesion kinase (FAK) and phospho-Src kinase expression, while its overexpression resulted in the opposite effects. Blocking FAK with its inhibitor reverses PIG3 overexpression-induced cell motility in NSCLC cells, indicating that PIG3 increased cell metastasis through the FAK/Src/paxillin pathway. Furthermore, PIG3 silencing sensitized NSCLC cells to FAK inhibitor. In conclusion, our data revealed a role for PIG3 in inducing LUAD metastasis, and its role as a new FAK regulator, suggesting that it could be considered as a novel prognostic biomarker or therapeutic target in the treatment of LUAD metastasis.
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Affiliation(s)
- Meng-Meng Gu
- Suzhou Digestive Diseases and Nutrition Research Center, Nanjing Medical University Affiliated Suzhou Hospital, North District of Suzhou Municipal Hospital, Suzhou, China.,State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Dexuan Gao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Ping-An Yao
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Lan Yu
- Suzhou Digestive Diseases and Nutrition Research Center, Nanjing Medical University Affiliated Suzhou Hospital, North District of Suzhou Municipal Hospital, Suzhou, China
| | - Xiao-Dong Yang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Chun-Gen Xing
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jundong Zhou
- Suzhou Cancer Center Core Laboratory, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, China
| | - Zeng-Fu Shang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Ming Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
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20
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Li M, Gu MM, Tian X, Xiao BB, Lu S, Zhu W, Yu L, Shang ZF. Hydroxylated-Graphene Quantum Dots Induce DNA Damage and Disrupt Microtubule Structure in Human Esophageal Epithelial Cells. Toxicol Sci 2018; 164:339-352. [PMID: 29669094 PMCID: PMC6016703 DOI: 10.1093/toxsci/kfy090] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Graphene quantum dots (GQDs) have attracted significant interests due to their unique chemical and physical properties. In this study, we investigated the potential effects of hydroxyl-modified GQDs (OH-GQDs) on the human esophageal epithelial cell line HET-1A. Our data revealed significant cytotoxicity of OH-GQDs which decreased the viability of HET-1A in a dose and time-dependent manner. The moderate concentration (25 or 50 µg/ml) of OH-GQDs significantly blocked HET-1A cells in G0/G1 cell cycle phase. An increased percentage of γH2AX-positive and genomically unstable cells were also detected in cells treated with different doses of OH-GQDs (25, 50, and 100 µg/ml). Microarray data revealed that OH-GQDs treatment down-regulated genes related to DNA damage repair, cell cycle regulation and cytoskeleton signal pathways indicating a novel role of OH-GQDs. Consistent with the microarray data, OH-GQDs disrupted microtubule structure and inhibited microtubule regrowth around centrosomes in HET-1A cells. In conclusion, our findings provide important evidence for considering the application of OH-GQDs in biomedical fields.
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Affiliation(s)
- Ming Li
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Meng-Meng Gu
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Xin Tian
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bei-Bei Xiao
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Siyuan Lu
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Wei Zhu
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Lan Yu
- Suzhou Digestive Diseases and Nutrition Research Center, Nanjing Medical University Affiliated Suzhou Hospital, North District of Suzhou Municipal Hospital, Suzhou 215000, People’s Republic of China
| | - Zeng-Fu Shang
- State Key Laboratory of Radiation Medicine and Protection, Department of Radiobiology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
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21
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Li M, Li S, Liu B, Gu MM, Zou S, Xiao BB, Yu L, Ding WQ, Zhou PK, Zhou J, Shang ZF. PIG3 promotes NSCLC cell mitotic progression and is associated with poor prognosis of NSCLC patients. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:39. [PMID: 28259183 PMCID: PMC5336678 DOI: 10.1186/s13046-017-0508-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 02/21/2017] [Indexed: 02/07/2023]
Abstract
Background Non-small cell lung cancer (NSCLC) is the most commonly diagnosed type of lung cancer that is associated with poor prognosis. In this study we explored the potential role of p53-induced gene 3 (PIG3) in the progression of NSCLC. Methods Immunohistochemistry was used to determine the expression levels of PIG3 in 201 NSCLC patients. We performed in vitro studies and silenced endogenous PIG3 by using specific siRNAs that specific target PIG3. Immunofluorescent staining was performed to determine the effect of PIG3 on mitotic progression in NSCLC cells. The growth rates of microtubules were determined by microtubule nucleation analysis. Cell proliferation and chemosensitivity were analyzed by CCK8 assays. Annexin V staining and β-galactosidase activity analysis were used to evaluate PIG3 deficiency-related apoptosis and senescence, respectively. Results PIG3 expression levels negatively correlated with overall survival and disease-free survival of NSCLC patients. Knock down of PIG3 resulted in repressed proliferation of NSCLC cells and increased aberrant mitosis, which included misaligning and lagging chromosomes, and bi- or multi-nucleated giant cells. In addition, PIG3 contributed to mitotic spindle assembly by promoting microtubule growth. Furthermore, loss of PIG3 sensitized NSCLC cells to docetaxel by enhancing docetaxel-induced apoptosis and senescence. Conclusions Our results indicate that PIG3 promotes NSCLC progression and therefore suggest that PIG3 may be a potential prognostic biomarker and novel therapeutic target for the treatment of NSCLC. Electronic supplementary material The online version of this article (doi:10.1186/s13046-017-0508-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ming Li
- School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Shanhu Li
- Laboratory of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, 100850, People's Republic of China
| | - Biao Liu
- Suzhou Cancer Center Core Laboratory, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu, 215001, People's Republic of China
| | - Meng-Meng Gu
- School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Shitao Zou
- Suzhou Cancer Center Core Laboratory, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu, 215001, People's Republic of China
| | - Bei-Bei Xiao
- School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Lan Yu
- Department of Radiation Oncology, Simmons Comprehensive Cancer Center at UT Southwestern Medical Center, Dallas, 75390, TX, USA
| | - Wei-Qun Ding
- Department of Pathology, University of Oklahoma Health Science Center, Oklahoma City, OK, 73104, USA
| | - Ping-Kun Zhou
- Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, Beijing, 100850, People's Republic of China
| | - Jundong Zhou
- Suzhou Cancer Center Core Laboratory, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu, 215001, People's Republic of China.
| | - Zeng-Fu Shang
- School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu, 215123, People's Republic of China. .,Department of Radiation Oncology, Simmons Comprehensive Cancer Center at UT Southwestern Medical Center, Dallas, 75390, TX, USA.
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22
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Jiang F, Zhang D, Li G, Wang X. Knockdown of DDX46 Inhibits the Invasion and Tumorigenesis in Osteosarcoma Cells. Oncol Res 2016; 25:417-425. [PMID: 27697093 PMCID: PMC7841134 DOI: 10.3727/096504016x14747253292210] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
DDX46, a member of the DEAD-box (DDX) helicase family, is involved in the development of several tumors. However, the exact role of DDX46 in osteosarcoma and the underlying mechanisms in tumorigenesis remain poorly understood. Thus, in the present study, we explored the role of DDX46 in osteosarcoma and the underlying mechanisms. Our results demonstrated that the expression levels of DDX46 in both mRNA and protein were greatly elevated in human osteosarcoma tissues and cell lines. Knockdown of DDX46 obviously inhibited osteosarcoma cell proliferation and tumor growth in vivo. In addition, knockdown of DDX46 also significantly suppressed migration and invasion in osteosarcoma cells. Furthermore, knockdown of DDX46 substantially downregulated the phosphorylation levels of PI3K and Akt in SaOS2 cells. In summary, the present results have revealed that DDX46 plays an important role in osteosarcoma growth and metastasis. Knockdown of DDX46 inhibited osteosarcoma cell proliferation, migration, and invasion in vitro and tumor growth in vivo. Therefore, DDX46 may be a potential therapeutic target for the treatment of osteosarcoma.
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23
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Li B, Li YM, He WT, Chen H, Zhu HW, Liu T, Zhang JH, Song TN, Zhou YL. Knockdown of DDX46 inhibits proliferation and induces apoptosis in esophageal squamous cell carcinoma cells. Oncol Rep 2016; 36:223-30. [PMID: 27176873 DOI: 10.3892/or.2016.4803] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/24/2016] [Indexed: 11/05/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is the most common type of esophageal carcinoma and remains the leading cause of cancer-related death worldwide. DEAD-box RNA helicases play critical roles in cellular metabolism and in many cases have been implicated in cellular proliferation and neoplastic transformation. DDX46 belongs to DEAD-box helicase family, the expression pattern of DDX46 in ESCC tissues and the biologic role in ESCC progression have not been implicated previously. In this study, DDX46 expression in human ESCC and adjacent normal tissues were explored using immunohistochemistry, and ESCC cell lines compared with normal esophageal epithelium cell were quantified using real‑time PCR. Next, lentivirus-mediated RNA interference was applied to silence DDX46 in TE-1 and Eca-109 cells. Cell growth was monitored using high content screening. Cell viability was measured by MTT assay. Cell colony-forming capacity was measured by colony formation assay. Cell cycle progression and apoptosis were determined by flow cytometry. Further, the stress and apoptosis signaling antibody array kit was used to detect the changes of signaling molecules in TE-1 cells after DDX46 knockdown. We found that DDX46 was significantly upregulated in ESCC tissues and cells compared with normal tissues and cells. DDX46 knockdown led to decreased proliferation and increased apoptosis in TE-1 and Eca-109 cells. Moreover, DDX46 silencing resulted in apoptotic induction via decreased phosphorylation of Akt and IκBα, as well as negative regulation of NF-κB signaling. In conclusion, these results demonstrate that DDX46 knockdown inhibited cell growth, and induced apoptosis, suggest that DDX46 is critical for ESCC cells proliferation. In addition, this study provides a foundation for further study into the clinical potential diagnosis and novel therapeutic target for ESCC.
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Affiliation(s)
- Bin Li
- Department of Thoracic Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Yu-Min Li
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Wen-Ting He
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Hao Chen
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Hong-Wen Zhu
- Gansu Provincial Key Laboratory of Digestive System Tumors, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Tao Liu
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Jian-Hua Zhang
- Department of Thoracic Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Tie-Niu Song
- Department of Thoracic Surgery, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
| | - Ya-Li Zhou
- Gansu Provincial Key Laboratory of Digestive System Tumors, Lanzhou University Second Hospital, Lanzhou University Second Clinical Medical College, Lanzhou 730030, P.R. China
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Li M, Gu Y, Ma YC, Shang ZF, Wang C, Liu FJ, Cao JP, Wan HJ, Zhang XG. Krüppel-Like Factor 5 Promotes Epithelial Proliferation and DNA Damage Repair in the Intestine of Irradiated Mice. Int J Biol Sci 2015; 11:1458-68. [PMID: 26681925 PMCID: PMC4672003 DOI: 10.7150/ijbs.13444] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 11/01/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND & AIMS: High doses of radiation induce severe DNA damage in intestinal epithelial cells, especially crypt cells, and cause intestinal injury, but the underlying molecular mechanisms remain unclear. Krüppel-like factor 5 (KLF5), a zinc finger-containing transcription factor, is induced by various stress stimuli and is involved in cell proliferation and survival. The role of KLF5 in radiation-induced intestinal injury was investigated here. METHODS: Wild type mice were treated with 8 or 15 Gy total body irradiation (TBI). KLF5 content and cellular localization in the small intestines of irradiated mice were detected by Western blot and immunohistochemical analysis. Mice with intestinal-specific knockdown of KLF5 (Vil-Cre; Klf5fl/+ mice) were generated and their response to radiation was compared with controls. Morphological changes were determined by hematoxylin and eosin staining. Proliferation was examined by Ki67 immunostaining. The molecular response of the small intestine after KLF5 knockdown was investigated using microarrays. RESULTS: KLF5 expression correlated with the progression of intestinal damage. Decreased levels of KLF5 in the gut were associated with increased damage to the intestinal mucosa and reduced epithelial proliferation after TBI. Our microarray data disclosed that KLF5 knockdown down-regulated genes related to DNA damage repair pathways such as nucleotide excision repair, mismatch repair, non-homologous end joining and the Fanconi anemia pathway, which may suggest a novel function of KLF5. CONCLUSIONS: Our study illustrates that KLF5 may modulate DNA repair pathways to prevent intestinal injury induced by TBI. KLF5 signaling provides a novel field for identification of potential therapeutic targets for the treatment of radiation-induced intestinal damage.
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Affiliation(s)
- Ming Li
- 1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China ; 2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China
| | - Yuan Gu
- 1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China ; 2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China
| | - Yan-Chao Ma
- 3. Institute of Medical Biotechnology, Medical College of Soochow University, Suzhou, Jiangsu 215007, China ; 4. Jiangsu Stem Cell Key Laboratory, Medical College of Soochow University, Suzhou, Jiangsu 215007, China
| | - Zeng-Fu Shang
- 1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China ; 2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China
| | - Chang Wang
- 1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China ; 2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China
| | - Fen-Ju Liu
- 1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China ; 2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China
| | - Jian-Ping Cao
- 1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China ; 2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China
| | - Hua-Jing Wan
- 5. Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, West China Institute of Women and Children's Health, and Department of Pediatrics, Huaxi Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xue-Guang Zhang
- 3. Institute of Medical Biotechnology, Medical College of Soochow University, Suzhou, Jiangsu 215007, China ; 4. Jiangsu Stem Cell Key Laboratory, Medical College of Soochow University, Suzhou, Jiangsu 215007, China
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