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Zhang L, Luo P, Mao X, Sun J, Wei J, Yang Y, Zhang Y, Jiang X. Lemur tyrosine kinase 2 has a tumor-inhibition function in human glioblastoma by regulating the RUNX3/Notch pathway. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119509. [PMID: 37271222 DOI: 10.1016/j.bbamcr.2023.119509] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/06/2023]
Abstract
Deregulation of lemur tyrosine kinase 2 (LMTK2) is a vital determinant for the onset and progression of malignancies, yet the relationship between LMTK2 and glioblastoma (GBM) is undetermined. This study was carried out to determine the relevance of LMTK2 in GBM. Initiating investigation by assessing The Cancer Genome Atlas (TCGA) data showed LMTK2 mRNA levels were decreased in GBM tissue. Later examination of clinical specimens confirmed low levels of LMTK2 mRNA and protein in GBM tissue. The downregulated level of LMTK2 in patients with GBM was related to poor overall survival. A suppressive function of LMTK2 on the proliferative capability and metastatic potential of GBM cells was demonstrated by overexpressing LMTK2 in GBM cell lines. Moreover, the restoration of LMTK2 augmented the sensitivity of GBM cells to the chemotherapy drug temozolomide. The mechanistic investigation uncovered LMTK2 as a regulator of the runt-related transcription factor 3 (RUNX3)/Notch signaling pathway. The overexpression of LMTK2 increased the expression of RUNX3 while inhibiting the activation of Notch signaling. The silencing of RUNX3 diminished the regulatory role of LMTK2 on Notch signaling. The inhibition of Notch signaling reversed the LMTK2-silencing-elicited protumor effects. Importantly, LMTK2-overexpressed GBM cells displayed weakened tumorigenicity in xenograft models. Our findings illustrate that LMTK2 has a tumor-inhibition function in GBM by constraining Notch signaling via RUNX3. This work indicates the deregulation of the LMTK2-mediated RUNX3/Notch signaling pathway may be a novel molecular mechanism for the malignant transformation of GBMs. This work highlights the interest in LMTK2-related approaches for treating GBM.
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Affiliation(s)
- Lei Zhang
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Peng Luo
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Xinggang Mao
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Jidong Sun
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Jialiang Wei
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Yuefan Yang
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Yanyu Zhang
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Xiaofan Jiang
- Department of Neurosurgery, the First Affiliated Hospital, Air Force Military Medical University, Xi'an 710032, China.
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Kałafut J, Czerwonka A, Czapla K, Przybyszewska-Podstawka A, Hermanowicz JM, Rivero-Müller A, Borkiewicz L. Regulation of Notch1 Signalling by Long Non-Coding RNAs in Cancers and Other Health Disorders. Int J Mol Sci 2023; 24:12579. [PMID: 37628760 PMCID: PMC10454443 DOI: 10.3390/ijms241612579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 07/30/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Notch1 signalling plays a multifaceted role in tissue development and homeostasis. Currently, due to the pivotal role of Notch1 signalling, the relationship between NOTCH1 expression and the development of health disorders is being intensively studied. Nevertheless, Notch1 signalling is not only controlled at the transcriptional level but also by a variety of post-translational events. First is the ligand-dependent mechanical activation of NOTCH receptors and then the intracellular crosstalk with other signalling molecules-among those are long non-coding RNAs (lncRNAs). In this review, we provide a detailed overview of the specific role of lncRNAs in the modulation of Notch1 signalling, from expression to activity, and their connection with the development of health disorders, especially cancers.
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Affiliation(s)
- Joanna Kałafut
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Aleje Raławickie 1, 20-059 Lublin, Poland; (J.K.); (A.C.); (K.C.); (A.P.-P.)
| | - Arkadiusz Czerwonka
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Aleje Raławickie 1, 20-059 Lublin, Poland; (J.K.); (A.C.); (K.C.); (A.P.-P.)
| | - Karolina Czapla
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Aleje Raławickie 1, 20-059 Lublin, Poland; (J.K.); (A.C.); (K.C.); (A.P.-P.)
| | - Alicja Przybyszewska-Podstawka
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Aleje Raławickie 1, 20-059 Lublin, Poland; (J.K.); (A.C.); (K.C.); (A.P.-P.)
| | - Justyna Magdalena Hermanowicz
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland;
- Department of Clinical Pharmacy, Medical University of Bialystok, Waszyngtona 15, 15-274 Bialystok, Poland
| | - Adolfo Rivero-Müller
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Aleje Raławickie 1, 20-059 Lublin, Poland; (J.K.); (A.C.); (K.C.); (A.P.-P.)
| | - Lidia Borkiewicz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Aleje Raławickie 1, 20-059 Lublin, Poland; (J.K.); (A.C.); (K.C.); (A.P.-P.)
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Vanaroj P, Chaijaroenkul W, Na-Bangchang K. Notch signaling in the pathogenesis, progression and identification of potential targets for cholangiocarcinoma (Review). Mol Clin Oncol 2022; 16:66. [PMID: 35154706 PMCID: PMC8825743 DOI: 10.3892/mco.2022.2499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 01/03/2022] [Indexed: 11/05/2022] Open
Abstract
Cholangiocarcinoma (CCA) is an aggressive type of bile duct cancer that is characterized by a high mortality rate due to its late diagnosis and ineffective treatment. The aim of the present systematic review was to analyze the association between Notch signaling and CCA in terms of its pathogenesis, progression and potential treatment targets. Relevant information was gathered from the PubMed, ScienceDirect and Scopus databases using the search terms 'cholangiocarcinoma' AND 'Notch signaling'. Of the 90 articles identified, 28 fulfilled the eligibility criteria and were included in the analysis. It was concluded that overexpression/upregulation of Notch ligands, such as Jagged1 and Notch receptors (Notch1, Notch2 and Notch3), as well as upregulation of the upstream Notch signaling pathway, promoted CCA development and progression. In addition, downregulation of Notch1 signaling through several possible interventions appears to be a promising strategy for inhibition of CCA development and progression. Therefore, the Notch signaling pathway may be considered as a potential target for CCA control.
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Affiliation(s)
- Peeranate Vanaroj
- Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, 12120 Thailand
| | - Wanna Chaijaroenkul
- Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, 12120 Thailand
| | - Kesara Na-Bangchang
- Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, 12120 Thailand.,Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, 12120 Thailand
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RUNX3 Transcript Variants Have Distinct Roles in Ovarian Carcinoma and Differently Influence Platinum Sensitivity and Angiogenesis. Cancers (Basel) 2021; 13:cancers13030476. [PMID: 33530588 PMCID: PMC7866085 DOI: 10.3390/cancers13030476] [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: 11/15/2020] [Revised: 01/15/2021] [Accepted: 01/21/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Epithelial ovarian cancer treatment is limited by missing predictive markers, frequent chemotherapy resistance and an incomplete understanding of the biology of tumors. Earlier work proved that hypermethylation of the gene RUNX3 coding for a transcription factor has prognostic value, and RUNX3 transcript variant overexpression, regulated by this epigenetic mechanism, influences cisplatin sensitivity and malignant properties of cells contrary. The present data validate RUNX3 transcript variant-specific effects for high-grade serous ovarian cancer and identify RUNX3-regulated genes and processes. Specifically, DNA damage repair and angiogenesis are influenced by RUNX3, and transcript variant 1 mediates stronger carcinogenic properties. Abstract The prognosis of late-stage epithelial ovarian cancer (EOC) patients is affected by chemotherapy response and the malignant potential of the tumor cells. In earlier work, we identified hypermethylation of the runt-related transcription factor 3 gene (RUNX3) as a prognostic biomarker and contrary functions of transcript variants (TV1 and TV2) in A2780 and SKOV3 cells. The aim of the study was to further validate these results and to increase the knowledge about RUNX3 function in EOC. New RUNX3 overexpression models of high-grade serous ovarian cancer (HGSOC) were established and analyzed for phenotypic (IC50 determination, migration, proliferation and angiogenesis assay, DNA damage analysis) and transcriptomic consequences (NGS) of RUNX3 TV1 and TV2 overexpression. Platinum sensitivity was affected by a specific transcript variant depending on BRCA background. RUNX3 TV2 induced an increased sensitivity in BRCA1wt cells (OVCAR3), whereas TV1 increased the sensitivity and induced a G2/M arrest under treatment in BRCA1mut cells (A13-2-12). These different phenotypes relate to differences in DNA repair: homologous recombination deficient A13-2-12 cells show less γH2AX foci despite higher levels of Pt-DNA adducts. RNA-Seq analyses prove transcript variant and cell-line-specific RUNX3 effects. Pathway analyses revealed another clinically important function of RUNX3—regulation of angiogenesis. This was confirmed by thrombospondin1 analyses, HUVEC spheroid sprouting assays and proteomic profiling. Importantly, conditioned media (CM) from RUNX3 TV1 overexpressing A13-2-12 cells induced an increased HUVEC sprouting. Altogether, the presented data support the hypothesis of different functions of RUNX3 transcript variants related to the clinically relevant processes—platinum resistance and angiogenesis.
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Zhang Y, Wang S, Lai Q, Fang Y, Wu C, Liu Y, Li Q, Wang X, Gu C, Chen J, Cai J, Li A, Liu S. Cancer-associated fibroblasts-derived exosomal miR-17-5p promotes colorectal cancer aggressive phenotype by initiating a RUNX3/MYC/TGF-β1 positive feedback loop. Cancer Lett 2020; 491:22-35. [PMID: 32730779 DOI: 10.1016/j.canlet.2020.07.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/14/2020] [Accepted: 07/17/2020] [Indexed: 12/12/2022]
Abstract
Cancer-associated fibroblasts (CAFs) are the main stromal cells in the tumour microenvironment (TME). We found that the distribution of CAFs was significantly increased with tumour progression and led to a poor prognosis. In vitro and in vivo assays revealed that CAFs enhanced colorectal cancer (CRC) metastasis. Based on extraction and identification of exosomes of CAFs and normal fibroblasts (NFs), CAFs-exo showed higher expression of miR-17-5p than NFs-exo and could deliver exosomal miR-17-5p from parental CAFs to CRC cells. Further exploration verified that miR-17-5p influenced CRC metastasis capacity and directly targeted 3'-untranslated regions (UTRs) of RUNX family transcription factor 3(RUNX3). Our findings further revealed that RUNX3 interacted with MYC proto-oncogene(MYC) and that both RUNX3 and MYC bound to the promoter of transforming growth factor beta1(TGF-β1) at base pairs 1005-1296, thereby activating the TGF-β signalling pathway and contributing to tumour progression. In addition, RUNX3/MYC/TGF-β1 signalling sustained autocrine TGF-β1 to activate CAFs, and activated CAFs released more exosomal miR-17-5p to CRC cells, forming a positive feedback loop for CRC progression. Taken together, these data provide a new understanding of the potential diagnostic value of exosomal miR-17-5p in CRC.
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Affiliation(s)
- Yue Zhang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Shanci Wang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Qiuhua Lai
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yuxin Fang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Changjie Wu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yongfeng Liu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Qingyuan Li
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xinke Wang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Chuncai Gu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Junsheng Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jianqun Cai
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Aimin Li
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Side Liu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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The oncogenic role of Jagged1/Notch signaling in cancer. Biomed Pharmacother 2020; 129:110416. [PMID: 32593969 DOI: 10.1016/j.biopha.2020.110416] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/12/2020] [Accepted: 06/13/2020] [Indexed: 12/14/2022] Open
Abstract
Aberrant activation of Notch signaling plays an oncogenic role in cancer development. Jagged1 (JAG1) is an important Notch ligand that triggers Notch signaling through cell-cell interactions. JAG1 overexpression has been reported in many different types of cancer and correlates with a poor clinical prognosis. JAG1/Notch signaling controls oncogenic processes in different cell types and cellular contexts. Furthermore, JAG1/Notch signaling cascades activate a number of oncogenic factors that regulate cellular functions such as proliferation, metastasis, drug-resistance, and angiogenesis. To suppress the severe toxicity of pan-Notch inhibitors, JAG1 is attracting increasing attention as a source of therapeutic targets for cancers. In this review, the oncogenic role of JAG1/Notch signaling in cancer is discussed, as well as implications of strategies to inhibit JAG1/Notch signaling activity.
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Wang Y, Yang X, Jiang A, Wang W, Li J, Wen J. Methylation-dependent transcriptional repression of RUNX3 by KCNQ1OT1 regulates mouse cardiac microvascular endothelial cell viability and inflammatory response following myocardial infarction. FASEB J 2019; 33:13145-13160. [PMID: 31625414 DOI: 10.1096/fj.201900310r] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Myocardial infarction (MI) is a major contributor to death and disability throughout the world. Increasing evidence shows that long noncoding RNAs (lncRNAs) are involved in the progression of MI. Here, we hypothesized that lncRNA potassium voltage-gated channel subfamily q member 1 overlapping transcript 1 (KCNQ1OT1) could affect the development of MI via regulation of Runt-related transcription factor (RUNX)3 by methylation. Initially, by ligation of the left anterior descending coronary artery, an acute MI (AMI) mouse model was established to collect the cardiac microvascular endothelial cells (CMECs), which revealed a high KCNQ1OT1 expression and a low RUNX3 expression with its high methylation. After that, KCNQ1OT1 knockdown or RUNX3 overexpression were transduced into the CMECs in order to detect their role in CMEC proliferation, apoptosis, and inflammatory response. Moreover, we assessed their interaction with the inflammatory Notch pathway, by determining the expression of Jagged 1, Hey1, Hes1, Notch intracellular domain, and Notch1. It was observed that after KCNQ1OT1 knockdown, the proliferation of AMI-CMECs was promoted, whereas their apoptosis was inhibited, accompanied by reduced level of inflammatory factors. These trends could also be achieved by RUNX3 overexpression via the Notch pathway. Finally, the regulation of DNA methyltransferase (DNMT)1-dependent methylation in RUNX3 by KCNQ1OT1 was determined, suggesting that KCNQ1OT1 could result in down-regulated RUNX3 expression through promoted RUNX3 methylation caused by recruiting DNMT1. Overall, this study demonstrates that KCNQ1OT1 silencing inhibits RUNX3 methylation, thereby offering protection against CMEC injury and inflammatory response in AMI, which may serve as a promising target for the disease treatment. -Wang, Y., Yang, X., Jiang, A., Wang, W., Li, J., Wen, J. Methylation-dependent transcriptional repression of RUNX3 by KCNQ1OT1 regulates mouse cardiac microvascular endothelial cell viability and inflammatory response following myocardial infarction.
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Affiliation(s)
- Yanbin Wang
- Department of Anesthesia, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Xudong Yang
- Department of Biochemistry and Molecular Biology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - An Jiang
- General Surgeon Department of Cadre's Ward, The Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Wei Wang
- Department of Anesthesia, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Jian Li
- Department of Anesthesia, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Junmin Wen
- Department of Intensive Care Medicine, Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, China
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Farooqi AA, de la Roche M, Djamgoz MBA, Siddik ZH. Overview of the oncogenic signaling pathways in colorectal cancer: Mechanistic insights. Semin Cancer Biol 2019; 58:65-79. [PMID: 30633978 DOI: 10.1016/j.semcancer.2019.01.001] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/29/2018] [Accepted: 01/07/2019] [Indexed: 02/07/2023]
Abstract
Colorectal cancer is a multifaceted disease which is therapeutically challenging. Based on insights gleaned from almost a quarter century of research, it is obvious that deregulation of spatio-temporally controlled signaling pathways play instrumental role in development and progression of colorectal cancer. High-throughput technologies have helped to develop a sharper and broader understanding of the wide ranging signal transduction cascades which also contribute to development of drug resistance, loss of apoptosis and, ultimately, of metastasis. In this review, we have set the spotlight on role of JAK/STAT, TGF/SMAD, Notch, WNT/β-Catenin, SHH/GLI and p53 pathways in the development and progression of colorectal cancer. We have also highlighted recent reports on TRAIL-mediated pathways and molecularly distinct voltage-gated sodium channels in colorectal cancer.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan.
| | - Marc de la Roche
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, United Kingdom.
| | - Mustafa B A Djamgoz
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, South Kensington Campus, London, SW7 2AZ, United Kingdom; Cyprus International University, Biotechnology Research Centre, Haspolat, Mersin 10, North Cyprus, Turkey.
| | - Zahid H Siddik
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
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Zhao H, Zhao H, Zhang Y, Zhou Y. MicroRNA‑199b promotes cell proliferation and invasion in Wilms' tumour by directly targeting Runt‑related transcription factor 3. Mol Med Rep 2018; 18:1812-1819. [PMID: 29845298 DOI: 10.3892/mmr.2018.9096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 05/17/2018] [Indexed: 11/05/2022] Open
Abstract
Emerging evidence has demonstrated that the deregulation of microRNAs (miRNAs) contributes to Wilms' tumour (WT) malignant progression. Therefore, identifying the essential miRNAs for WT onset and progression may be a promising therapeutic method for patients with this disease. Dysregulation of miRNA‑199b (miR‑199b) serves significant roles in various types of human cancer. However, its expression patterns, possible functions and associated mechanisms in WT are largely unknown. In the present study, the expression of miR‑199b in WT tissues was detected by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) analysis. The biological functions of miR‑199b overexpression in WT cells were determined using Cell counting kit‑8 and Transwell invasion assays. The mechanisms underlying the action of miR‑199b in WT cells were also investigated using bioinformatics analysis, a luciferase reporter assay, RT‑qPCR and western blot analysis. It was revealed that miR‑199b expression was upregulated in WT tissues. In addition, the downregulation of miR‑199b attenuated the proliferation and invasion of WT cells. Runt‑related transcription factor 3 (RUNX3) was mechanistically predicted as a potential target of miR‑199b. Subsequent experiments demonstrated that RUNX3 was a direct target gene of miR‑199b in WT. In addition, the downregulation of RUNX3 in the WT tissues was inversely correlated with the miR‑199b expression level. The recovered RUNX3 expression counteracted the oncogenic roles of miR‑199b in WT cells. Therefore miR‑199b may serve as an oncogene in WT progression by directly targeting RUNX3, thereby suggesting that the miR‑199b/RUNX3 axis may be a promising therapeutic target for patients with WT.
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Affiliation(s)
- Huizhen Zhao
- Department of Pediatrics, Yidu Central Hospital of Weifang, Weifang, Shandong 262550, P.R. China
| | - Hailing Zhao
- Department of Pediatrics, Yidu Central Hospital of Weifang, Weifang, Shandong 262550, P.R. China
| | - Yongna Zhang
- Department of Pediatrics, Yidu Central Hospital of Weifang, Weifang, Shandong 262550, P.R. China
| | - Yuxi Zhou
- Department of Pediatrics, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
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