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Han R, Yang J, Zhu Y, Gan R. Wnt signaling in gastric cancer: current progress and future prospects. Front Oncol 2024; 14:1410513. [PMID: 38952556 PMCID: PMC11216096 DOI: 10.3389/fonc.2024.1410513] [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: 04/01/2024] [Accepted: 05/13/2024] [Indexed: 07/03/2024] Open
Abstract
Levels of the Wnt pathway components are abnormally altered in gastric cancer cells, leading to malignant cell proliferation, invasion and metastasis, poor prognosis and chemoresistance. Therefore, it is important to understand the mechanism of Wnt signaling pathway in gastric cancer. We systematically reviewed the molecular mechanisms of the Wnt pathway in gastric cancer development; and summarize the progression and the challenges of research on molecular agents of the Wnt pathway.
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Affiliation(s)
- Ruyue Han
- Cancer Research Institute, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Jing Yang
- Department of Gastroenterology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Yingying Zhu
- Cancer Research Institute, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Runliang Gan
- Cancer Research Institute, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan, Hengyang Medical School, University of South China, Hengyang, Hunan, China
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2
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Ott L, Möller J, Burkovski A. Interactions between the Re-Emerging Pathogen Corynebacterium diphtheriae and Host Cells. Int J Mol Sci 2022; 23:3298. [PMID: 35328715 PMCID: PMC8952647 DOI: 10.3390/ijms23063298] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 02/07/2023] Open
Abstract
Corynebacterium diphtheriae, the etiological agent of diphtheria, is a re-emerging pathogen, responsible for several thousand deaths per year. In addition to diphtheria, systemic infections, often by non-toxigenic strains, are increasingly observed. This indicates that besides the well-studied and highly potent diphtheria toxin, various other virulence factors may influence the progression of the infection. This review focuses on the known components of C. diphtheriae responsible for adhesion, invasion, inflammation, and cell death, as well as on the cellular signaling pathways activated upon infection.
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Affiliation(s)
- Lisa Ott
- Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 5, 91058 Erlangen, Germany
| | - Jens Möller
- Microbiology Division, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 5, 91058 Erlangen, Germany
| | - Andreas Burkovski
- Microbiology Division, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 5, 91058 Erlangen, Germany
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Lee JM, Kim H, Baek SH. Unraveling the physiological roles of retinoic acid receptor-related orphan receptor α. Exp Mol Med 2021; 53:1278-1286. [PMID: 34588606 PMCID: PMC8492739 DOI: 10.1038/s12276-021-00679-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 12/20/2022] Open
Abstract
Retinoic acid receptor-related orphan receptor-α (RORα) is a member of the orphan nuclear receptor family and functions as a transcriptional activator in response to circadian changes. Circadian rhythms are complex cellular mechanisms regulating diverse metabolic, inflammatory, and tumorigenic gene expression pathways that govern cyclic cellular physiology. Disruption of circadian regulators, including RORα, plays a critical role in tumorigenesis and facilitates the development of inflammatory hallmarks. Although RORα contributes to overall fitness among anticancer, anti-inflammatory, lipid homeostasis, and circadian clock mechanisms, the molecular mechanisms underlying the mode of transcriptional regulation by RORα remain unclear. Nonetheless, RORα has important implications for pharmacological prevention of cancer, inflammation, and metabolic diseases, and understanding context-dependent RORα regulation will provide an innovative approach for unraveling the functional link between cancer metabolism and rhythm changes.
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Affiliation(s)
- Ji Min Lee
- Department of Molecular Bioscience, College of Biomedical Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Hyunkyung Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, 02841, Republic of Korea. .,BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Republic of Korea.
| | - Sung Hee Baek
- Creative Research Initiatives Center for Epigenetic Code and Diseases, Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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Shi Q, Zhou C, Xie R, Li M, Shen P, Lu Y, Ma S. CircCNIH4 inhibits gastric cancer progression via regulating DKK2 and FRZB expression and Wnt/β-catenin pathway. ACTA ACUST UNITED AC 2021; 28:19. [PMID: 34364402 PMCID: PMC8349030 DOI: 10.1186/s40709-021-00140-x] [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: 12/05/2019] [Accepted: 04/13/2021] [Indexed: 12/12/2022]
Abstract
Background Circular RNAs (circRNAs) have been reported to play an important role in tumor progression in various cancer types, including gastric cancer. The aim of this study was to investigate the role of circCNIH4 (hsa_circ_0000190) in gastric cancer and the underlying mechanism. Methods The expression levels of circCNIH4 and Wnt antagonist genes were detected by quantitative real-time polymerase chain reaction (qRT-PCR). The protein levels of β-catenin, Ki67, Dickkopf 2 (DKK2) and Frizzled related protein (FRZB) were measured by western blot. Ectopic overexpression or knockdown of circCNIH4, proliferation, apoptosis, migration and invasion by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), flow cytometry and transwell assay in vitro, and in vivo experiment, were employed to assess the role of circCNIH4 in gastric cancer. Results CircCNIH4 was downregulated in gastric cancer tissues and cells. Overexpression of circCNIH4 inhibited gastric cancer cell proliferation, migration and invasion and promoted apoptosis by inactivating Wnt/β-catenin pathway in vitro. CircCNIH4 induced the expression of DKK2 and FRZB in gastric cancer cells. Moreover, silencing of DKK2 or FRZB reversed circCNIH4 overexpression-mediated effects on gastric cancer cells. Additionally, circCNIH4 suppressed tumor growth via regulating DKK2 and FRZB expression in gastric cancer in vivo. Conclusion Our study demonstrated that circCNIH4 played a tumor-inhibiting role through upregulating DKK2 and FRZB expression and suppressing Wnt/β-catenin pathway in gastric cancer, which might provide a potential biomarker for the diagnosis and treatment of gastric cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s40709-021-00140-x.
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Affiliation(s)
- Qi Shi
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China
| | - Chuanwen Zhou
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China
| | - Rui Xie
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China
| | - Miaomiao Li
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China
| | - Peng Shen
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China
| | - Yining Lu
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China
| | - Shijie Ma
- Department of Gastroenterology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1, West Huanghe Road, Huaian, 223300, Jiangsu, China.
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Bhaskar Rao D, Devanandan HJ, Ganesan K. Identification of kinases and kinase inhibitors for the differential targeting of Wnt/β-catenin signaling in gastric cancer subtypes. Drug Dev Res 2021; 82:1182-1192. [PMID: 34002415 DOI: 10.1002/ddr.21833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 01/21/2023]
Abstract
The oncogenic signaling pathway Wnt is often activated in many cancers including gastric cancer. Wnt signaling pathway is considered as a potential target for developing new targeted therapeutics. Kinase inhibitors are the promising class of drugs for many diseases including cancers. Toward identifying the potent inhibitors targeting Wnt signaling pathway, a kinase inhibitor library with 82 inhibitors were screened using Wnt pathway reporter assay in gastric cancer cells. Notably, 34 kinase inhibitors were identified to inhibit Wnt mediated reporter activity to the extent of more than 50%. The corresponding kinase genes, which are known targets of these kinase inhibitors, were investigated for their expression in the available mRNA profiles of gastric tumors. A major group of the kinase genes showed higher expression in intestinal subtype gastric tumors. Another group of kinase genes were found expressed in diffuse type gastric tumors. The kinase genes expressed in intestinal type gastric tumors were found associated with varying survival of gastric cancer patients whereas those expressed in diffuse type tumors were found associated with the poor survival. Thus, the kinase genes specifically expressed in intestinal and diffuse type gastric tumors and the kinase inhibitors to target Wnt signaling pathway in gastric cancer subtypes have been identified.
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Affiliation(s)
- Divya Bhaskar Rao
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Helen Jemimah Devanandan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Kumaresan Ganesan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
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Peng Y, Qin Y, Zhang X, Deng S, Yuan Y, Feng X, Chen W, Hu F, Gao Y, He J, Cheng Y, Wei Y, Fan X, Ashktorab H, Smoot D, Li S, Meltzer SJ, Zhuang S, Tang N, Jin Z. MiRNA-20b/SUFU/Wnt axis accelerates gastric cancer cell proliferation, migration and EMT. Heliyon 2021; 7:e06695. [PMID: 33912703 PMCID: PMC8065298 DOI: 10.1016/j.heliyon.2021.e06695] [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: 12/10/2019] [Revised: 08/17/2020] [Accepted: 04/01/2021] [Indexed: 12/25/2022] Open
Abstract
Previous research has found that miRNA-20b is highly expressed in gastric cancer (GC), however, its function and underlying mechanism are not clear. Wnt signaling pathway, implicated in tumorigeneisis, is activated in more than 30% of GC. We would like to characterize the biological behavior of miRNA-20b in terms of modulating Wnt/β-catenin signaling and EMT. We showed that miRNA-20b inhibitors suppressed Topflash/Fopflash dependent luciferase activity and the β-catenin nuclear translocation, resulting in inhibition of Wnt pathway activity and EMT. SUFU, negatively regulating Wnt and Hedgehog signaling pathway, was proved to be targeted by miRNA-20b. Moreover, additional knockdown of SUFU alleviated the inhibitory effect on Wnt pathway activity, EMT, cell proliferation/migration and colony formation caused by miRNA-20b inhibition. In summary, miRNA-20b is an oncogenic miRNA and promoted cell proliferation, migration and EMT in GC partially by activating Wnt pathway via targeting SUFU.
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Affiliation(s)
- Yin Peng
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathology, Health Science Center, Shenzhen University, Shenzhen, Guangdong, 518055, China,Corresponding author.
| | - Ying Qin
- Department of Gastrointestinal Surgery, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, China
| | - Xiaojing Zhang
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathology, Health Science Center, Shenzhen University, Shenzhen, Guangdong, 518055, China,Department of Pathology, Guangdong Province Key Laboratory of Molecular Oncologic Pathology, China
| | - Shiqi Deng
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Yuan Yuan
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Xianling Feng
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Wangchun Chen
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Fan Hu
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Yuli Gao
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Jieqiong He
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Yulan Cheng
- Department of Medicine/GI Division, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD 21287, USA
| | - Yanjie Wei
- Center for High Performance Computing, Shenzhen Institutes of Advanced Technology, Shenzhen, Guangdong, 518000, China
| | - Xinmin Fan
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China
| | - Hassan Ashktorab
- Department of Medicine and Cancer Center, Howard University, College of Medicine, Washington, DC 20060, USA
| | - Duane Smoot
- Department of Medicine, Meharry Medical Center, Nashville, TN 37208, USA
| | - Song Li
- Shenzhen Science & Technology Development Exchange Center, Shenzhen Science and Technology Building, Shenzhen, Guangdong, 518055, China
| | - Stephen J. Meltzer
- Department of Medicine/GI Division, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD 21287, USA
| | - Shutong Zhuang
- Department of Gastrointestinal Surgery, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, China
| | - Na Tang
- Department of Pathology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China
| | - Zhe Jin
- Guangdong Key Laboratory for Genome Stability & Disease Prevention, Department of Pathology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, China,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathology, Health Science Center, Shenzhen University, Shenzhen, Guangdong, 518055, China,Corresponding author.
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Schiffmann LM, Loeser H, Jacob AS, Maus M, Fuchs H, Zhao Y, Tharun L, Essakly A, Iannos Damanakis A, Zander T, Büttner R, Schröder W, Bruns C, Quaas A, Gebauer F. Dickkopf-2 (DKK2) as Context Dependent Factor in Patients with Esophageal Adenocarcinoma. Cancers (Basel) 2020; 12:cancers12020451. [PMID: 32075129 PMCID: PMC7072714 DOI: 10.3390/cancers12020451] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/06/2020] [Accepted: 02/11/2020] [Indexed: 12/16/2022] Open
Abstract
Dickkopf-2 (DKK2) has been described as Wnt/beta-catenin pathway antagonist and its expression is mediated by micro RNA-221 (miRNA-221). So far, there is only limited data characterizing the role of DKK2 expression in esophageal cancer. A tissue micro array of 192 patients with esophageal adenocarcinoma was analyzed immunohistochemically for DKK2, miRNA-221 expression by RNA scope, and GATA6 amplification by fluorescence in-situ hybridization. The data was correlated with clinical, pathological and molecular data (TP53, HER2, c-myc, GATA6, PIK3CA, and KRAS amplifications). DKK2 expression was detectable in 21.7% and miRNA-221 expression in 33.5% of the patients. We observed no correlation between DKK2 or miRNA-221 expression and clinico-pathological data DKK2 expression was correlated with TP53 mutations and amplification of GATA6. We did not detect a survival difference in dependence of DKK2 for the total cohort, however, in patients without neoadjuvant treatment DKK2 expression correlated with a prolonged survival (median overall-survival 202 vs. 55 months, p = 0.012) which turned opposite in patients that underwent neoadjuvant treatment. High amounts of miRNA-221 were in trend associated with a prolonged overall-survival (p = 0.070). DKK2 as a Wnt antagonist is associated with prolonged survival in patients without neoadjuvant treatment and changes its prognostic value to the contrary in patients after neoadjuvant therapy. The modulatory effects of neoadjuvant treatment in connection with DKK2 expression are not fully understood, but when considering DKK2 as a tumor marker, it is necessary to see it in the context of neoadjuvant therapy.
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Affiliation(s)
- Lars M. Schiffmann
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Heike Loeser
- Department of Pathology, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (H.L.); (L.T.); (A.E.); (R.B.); (A.Q.)
| | - Anne Sophie Jacob
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Martin Maus
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Hans Fuchs
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Yue Zhao
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Lars Tharun
- Department of Pathology, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (H.L.); (L.T.); (A.E.); (R.B.); (A.Q.)
| | - Ahlem Essakly
- Department of Pathology, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (H.L.); (L.T.); (A.E.); (R.B.); (A.Q.)
| | - Alexander Iannos Damanakis
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Thomas Zander
- Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Gastrointestinal Cancer Group Cologne (GCGC), University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany;
| | - Reinhard Büttner
- Department of Pathology, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (H.L.); (L.T.); (A.E.); (R.B.); (A.Q.)
| | - Wolfgang Schröder
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Christiane Bruns
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
| | - Alexander Quaas
- Department of Pathology, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (H.L.); (L.T.); (A.E.); (R.B.); (A.Q.)
| | - Florian Gebauer
- Department of General, Visceral and Cancer Surgery, University of Cologne, Kerpener Strasse 62, 50937 Cologne, Germany; (L.M.S.); (A.S.J.); (M.M.); (H.F.); (Y.Z.); (A.I.D.); (W.S.); (C.B.)
- Correspondence: ; Tel.: +49-221-478-4803; Fax: +49-221-478-6258
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Up-regulation of long non-coding RNA AWPPH inhibits proliferation and invasion of gastric cancer cells via miR-203a/DKK2 axis. Hum Cell 2019; 32:495-503. [PMID: 31489578 DOI: 10.1007/s13577-019-00277-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/14/2019] [Indexed: 12/24/2022]
Abstract
AWPPH is a newly discovered long non-coding RNA (lncRNA). However, the expression and function of AWPPH in gastric cancer (GC) have not yet been clarified. This study tries to assess the expression and biological roles of AWPPH in GC and the underlying mechanism. The expression of lncRNA AWPPH was evaluated in GC tissues and adjacent normal tissues from 40 patients. Cell Counting Kit-8 (CCK8) and transwell assays were applied to assess cell proliferation and invasion capabilities. Bioinformatics tool was employed to predict AWPPH's sponging miRNA, while luciferase reporter assays were used to verify the target. LncRNA AWPPH was remarkably downregulated in GC and associated with metastasis. CCK8 and transwell assays proved that AWPPH inhibited cell proliferation and invasion in GC cells. MiR-203a was a predicted and further verified target of AWPPH. DKK2 was verified as a direct target of miR-203a. Upregulation of miR-203a attenuated the repressive effects of AWPPH on GC cell proliferation and invasion. AWPPH inhibited GC cell proliferation and invasion via miR-203a/DKK2 axis. This finding might provide new insight for the potential therapeutic strategies for GC in the future.
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