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Jia S, Yu L, Wang L, Peng L. The functional significance of circRNA/miRNA/mRNA interactions as a regulatory network in lung cancer biology. Int J Biochem Cell Biol 2024; 169:106548. [PMID: 38360264 DOI: 10.1016/j.biocel.2024.106548] [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: 09/15/2023] [Revised: 01/22/2024] [Accepted: 02/02/2024] [Indexed: 02/17/2024]
Abstract
Lung cancer, the leading cause of cancer-related deaths, presents significant challenges to patients due to its poor prognosis. Recent research has increasingly implicated circular RNAs in the development and progression of lung cancer. These circular RNAs have been found to impact various aspects of tumor behavior, including proliferation, metastasis, cell cycle regulation, apoptosis, cancer stem cells, therapy response, and the tumor microenvironment. One of the key mechanisms by which circular RNAs exert their influence is through their ability to act as miRNA sponges, sequestering microRNAs and preventing them from targeting other RNA molecules. Accumulating evidence suggests that circular RNAs can function as competing endogenous RNAs, affecting the expression of target mRNAs by sequestering microRNAs. Dysregulation of competing endogenous RNAs networks involving circular RNAs, microRNAs, and mRNAs leads to the aberrant expression of oncogenes and tumor suppressors involved in lung cancer pathogenesis. Understanding the dynamic interplay and molecular mechanisms among circular RNAs, microRNAs, and mRNAs holds great promise for advancing early diagnosis, personalized therapeutic interventions, and improved patient outcomes in lung cancer. Therefore, this study aims to provide an in-depth exploration of the executive roles of circular RNAs/microRNAs/ mRNAs interactions in lung cancer pathogenesis and their potential utility for diagnosing lung cancer, predicting patient prognosis, and guiding targeted therapies. By offering a comprehensive overview of the dysregulation of the axes as driving factors in lung cancer, we aim to pave the way for their translation into clinical practice in the future.
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Affiliation(s)
- Shengnan Jia
- Department of Respiratory Medicine, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin 130021, China; Department of Hepatopancreatobiliary Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Ling Yu
- Department of Pharmacy, The Second Hospital of Jilin University, Changchun 130041, China
| | - Lihui Wang
- Department of Respiratory Medicine, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin 130021, China.
| | - Liping Peng
- Department of Respiratory Medicine, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin 130021, China.
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2
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Bağcı Ö, Özdemir EM, Şanlıtürk B. Variant Analysis of miRNA Regulatory Genes in 35 Sporadic Lung Carcinoma Tumors. DOKL BIOCHEM BIOPHYS 2023; 513:S1-S7. [PMID: 38472669 DOI: 10.1134/s1607672924600052] [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: 10/11/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 03/14/2024]
Abstract
Lung cancer is one of the cancer types with the highest mortality worldwide. The most frequently mutated genes known to be clinically important in lung cancers are EGFR, BRAF, and KRAS genes. Therefore, the therapeutic agents developed are directed against variants that cause over-activation of the EGFR-KRAS-BRAF-BRAF-MEK/ERK signalling pathway. However, different responses of patients to Tyrosine Kinase Inhibitors (TKIs) suggest that new prognostic biomarkers should be defined and epigenetic mechanisms may be related to this situation. METHODS In this study, sequence analyses of AGO2, DICER, and DROSHA genes involved in miRNA biogenesis and EGFR, KRAS, and BRAF genes were performed in 35 patients with sporadic lung cancer. RESULTS We found variations in genes involved in miRNA biogenesis that have not been previously reported in the literature. In addition, we found 4 different variants in the EGFR gene that have been described in the literature. In addition, a statistically significant association was found between the presence of mutations in at least one of the genes involved in miRNA biogenesis and metastasis (p:0.02). CONCLUSIONS In conclusion, genomic dysregulation of key miRNA biogenesis genes may be one of the possible reasons for the differential response of patients to therapeutic agents and the development of metastasis in EGFR wild type tumours.
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Affiliation(s)
- Özkan Bağcı
- Department of Medical Genetics, Selcuk University, School of Medicine, Konya, Turkey.
| | | | - Batuhan Şanlıtürk
- Department of Medical Genetics, Selcuk University, School of Medicine, Konya, Turkey
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3
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Xu X, Chen Y, Zhang Y, Cai H, Shen P, Peng J, Liu H, Chen X, Chu F. CYTOR Promotes Proliferation of Lung Cancer Cell by Targeting miR-103a-3p to Upregulate HMGB1. Mol Biotechnol 2023; 65:1528-1538. [PMID: 36697993 DOI: 10.1007/s12033-023-00662-w] [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: 10/07/2022] [Accepted: 01/11/2023] [Indexed: 01/26/2023]
Abstract
Lung cancer is one of the most dangerous malignant tumors to human health in the world. Previous researches have shown that cytoskeleton regulator RNA (CYTOR), a long noncoding RNA was involved in the occurrence and development of various types of cancer. The aim of this study is to investigate the clinical significance and biological function of CYTOR in lung cancer. Real-time quantitative PCR was applied to detect the expression of CYTOR. The proliferation of A549 and H1299 cells was analyzed by CCK8 assay. The luciferase reporter assay and RNA pull-down assay were used to reveal the interactions between CYTOR and its downstream targets. Western blot was used to detect the expression of high-mobility group protein B1 (HMGB1). Here we found CYTOR was upregulated in lung cancer tissues and cell lines. The proliferation of A549 and H1299 cells was inhibited after CYTOR silencing. In addition, CYTOR could directly interact with and negatively regulate miR-103a-3p, and miR-103a-3p inhibited cell proliferation by targeting HMGB1. The CYTOR/miR-103a-3p/HMGB1 axis promoted lung cancer cell proliferation. CYTOR sponges miR-103a-3p to promote the proliferation of lung cancer cells through HMGB1. The CYTOR/miR-103a-3p/HMGB1 axis plays a critical role in the progression of lung cancer.
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Affiliation(s)
- Xinxin Xu
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Yi Chen
- Department of Clinical Laboratory Shanghai East Hospital, Tongji University, Shanghai, 200123, China
| | - Yan Zhang
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Hua Cai
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Pei Shen
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Jingjing Peng
- Department of Laboratory Medicine, Nantong First People's Hospital, Nantong, 226001, China
| | - Hongli Liu
- Department of Laboratory Medicine, Nantong Tumor Hospital, Nantong, 226001, China
| | - Xiang Chen
- Department of Laboratory Medicine, Nantong First People's Hospital, Nantong, 226001, China
| | - Fuying Chu
- Department of Laboratory Medicine, Nantong First People's Hospital, Nantong, 226001, China.
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Schuster SL, Arora S, Wladyka CL, Itagi P, Corey L, Young D, Stackhouse BL, Kollath L, Wu QV, Corey E, True LD, Ha G, Paddison PJ, Hsieh AC. Multi-level functional genomics reveals molecular and cellular oncogenicity of patient-based 3' untranslated region mutations. Cell Rep 2023; 42:112840. [PMID: 37516102 PMCID: PMC10540565 DOI: 10.1016/j.celrep.2023.112840] [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: 12/12/2022] [Revised: 06/05/2023] [Accepted: 07/05/2023] [Indexed: 07/31/2023] Open
Abstract
3' untranslated region (3' UTR) somatic mutations represent a largely unexplored avenue of alternative oncogenic gene dysregulation. To determine the significance of 3' UTR mutations in disease, we identify 3' UTR somatic variants across 185 advanced prostate tumors, discovering 14,497 single-nucleotide mutations enriched in oncogenic pathways and 3' UTR regulatory elements. By developing two complementary massively parallel reporter assays, we measure how thousands of patient-based mutations affect mRNA translation and stability and identify hundreds of functional variants that allow us to define determinants of mutation significance. We demonstrate the clinical relevance of these mutations, observing that CRISPR-Cas9 endogenous editing of distinct variants increases cellular stress resistance and that patients harboring oncogenic 3' UTR mutations have a particularly poor prognosis. This work represents an expansive view of the extent to which disease-relevant 3' UTR mutations affect mRNA stability, translation, and cancer progression, uncovering principles of regulatory functionality and potential therapeutic targets in previously unexplored regulatory regions.
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Affiliation(s)
- Samantha L Schuster
- Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA; Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Sonali Arora
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Cynthia L Wladyka
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Pushpa Itagi
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA; Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Lukas Corey
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Dave Young
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | | | - Lori Kollath
- Department of Urology, University of Washington, Seattle, WA 98195, USA
| | - Qian V Wu
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Eva Corey
- Department of Urology, University of Washington, Seattle, WA 98195, USA
| | - Lawrence D True
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA
| | - Gavin Ha
- Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA; Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Patrick J Paddison
- Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA; Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Andrew C Hsieh
- Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA; Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA; Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA; Department of Medicine, University of Washington, Seattle, WA 98195, USA.
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5
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Feng Z, Ke S, Wang C, Lu S, Xu Y, Yu H, Li Z, Yin B, Li X, Hua Y, Qian B, Bai M, Fu Y, Zhang Y, Wu Y, Ma Y. RNF125 attenuates hepatocellular carcinoma progression by downregulating SRSF1-ERK pathway. Oncogene 2023:10.1038/s41388-023-02710-w. [PMID: 37142680 DOI: 10.1038/s41388-023-02710-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 05/06/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most deadly malignant cancers worldwide. Research into the crucial genes responsible for maintaining the aggressive behaviour of cancer cells is important for the clinical treatment of HCC. The purpose of this study was to determine whether the E3 ubiquitin ligase Ring Finger Protein 125 (RNF125) plays a role in the proliferation and metastasis of HCC. RNF125 expression in human HCC samples and cell lines was investigated using TCGA dataset mining, qRT‒PCR, western blot, and immunohistochemistry assays. In addition, 80 patients with HCC were studied for the clinical value of RNF125. Furthermore, the molecular mechanism by which RNF125 contributes to hepatocellular carcinoma progression was determined with mass spectrometry (MS), coimmunoprecipitation (Co-IP), dual-luciferase reporter assays, and ubiquitin ladder assays. We found that RNF125 was markedly downregulated in HCC tumour tissues, which was associated with a poor prognosis for patients with HCC. Moreover, the overexpression of RNF125 inhibited HCC proliferation and metastasis both in vitro and in vivo, whereas the knockdown of RNF125 exerted antithetical effects. Mechanistically, mass spectrometry analysis revealed a protein interaction between RNF125 and SRSF1, and RNF125 accelerated the proteasome-mediated degradation of SRSF1, which impeded HCC progression by inhibiting the ERK signalling pathway. Furthermore, RNF125 was detected to be the downstream target of miR-103a-3p. In this study, we identified that RNF125 is a tumour suppressor in HCC and inhibits HCC progression by inhibiting the SRSF1/ERK pathway. These findings provide a promising treatment target for HCC.
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Affiliation(s)
- Zhigang Feng
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- The First Department of General Surgery, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
| | - Shanjia Ke
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chaoqun Wang
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Shounan Lu
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yanan Xu
- Department of Hepatopancreatobiliary Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hongjun Yu
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zihao Li
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Bing Yin
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xinglong Li
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yongliang Hua
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Department of Pediatric Surgery, The Six Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Baolin Qian
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Miaoyu Bai
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yao Fu
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yingmei Zhang
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yaohua Wu
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
- Department of Thyroid Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Yong Ma
- Department of Minimal Invasive Hepatic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
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Zhu Y, Han Y, Almuntashiri S, Dutta S, Wang X, Owen CA, Zhang D. Dysregulation of miR-103a Mediates Cigarette Smoking-induced Lipid-laden Macrophage Formation. Am J Respir Cell Mol Biol 2022; 67:695-707. [PMID: 36066909 PMCID: PMC9743184 DOI: 10.1165/rcmb.2022-0202oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/02/2022] [Indexed: 12/15/2022] Open
Abstract
Cigarette smoke (CS) is considered a major risk factor for chronic obstructive pulmonary disease (COPD) that is currently the third leading cause of death in the United States. Studies have indicated that patients with COPD have elevated blood low-density lipoprotein levels, which may contribute to the dysregulation of lipid metabolism. Accumulating data show that microRNAs (miRNAs) are involved in various human diseases. However, the role of microRNAs in the pathogenesis of COPD remains poorly defined. In this study, we found that miR-103a expression was significantly reduced in alveolar macrophages from smokers and patients with COPD versus that in alveolar macrophages from nonsmokers. Our data indicated that reactive oxygen species negatively regulate miR-103a in macrophages. Functionally, miR-103a modulates the expressions of genes involved in lipid metabolism and directly targets low-density lipoprotein receptors in macrophages. Furthermore, overexpression of miR-103a suppressed the accumulation of lipid droplets and reduced the reactive oxygen species, both in vitro and in vivo. Taken together, our findings indicate that downregulation of miR-103a contributes to cigarette smoke-induced lipid-laden macrophage formation and plays a critical role in lipid homeostasis in lung macrophages in the pathogenesis of COPD.
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Affiliation(s)
- Yin Zhu
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Yohan Han
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Sultan Almuntashiri
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
- Department of Clinical Pharmacy, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Saugata Dutta
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Xiaoyun Wang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Caroline A. Owen
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts; and
| | - Duo Zhang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia
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Dexmedetomidine Mitigates Microglial Activation Associated with Postoperative Cognitive Dysfunction by Modulating the MicroRNA-103a-3p/VAMP1 Axis. Neural Plast 2022; 2022:1353778. [PMID: 35494481 PMCID: PMC9042642 DOI: 10.1155/2022/1353778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 03/29/2022] [Indexed: 11/17/2022] Open
Abstract
Surgery-induced microglial activation is critical in mediating postoperative cognitive dysfunction (POCD) in elderly patients, where the important protective effect of dexmedetomidine has been indicated. However, the mechanisms of action of dexmedetomidine during the neuroinflammatory response that underlies POCD remain largely unknown. We found that lipopolysaccharide (LPS) induced substantial inflammatory responses in primary and BV2 microglial cells. The screening of differentially expressed miRNAs revealed that miR-103a-3p was downregulated in these cell culture models. Overexpression of miR-103a-3p mimics and inhibitors suppressed and enhanced the release of inflammatory factors, respectively. VAMP1 expression was upregulated in LPS-treated primary and BV-2 microglial cells, and it was validated as a downstream target of miR-103-3p. VAMP1-knockdown significantly inhibited the LPS-induced inflammatory response. Dexmedetomidine treatment markedly inhibited LPS-induced inflammation and the expression of VAMP1, and miR-103a-3p expression reversed this inhibition. Moreover, dexmedetomidine mitigated microglial activation and the associated inflammatory response in a rat model of surgical trauma that mimicked POCD. In this model, dexmedetomidine reversed miR-103a-3p and VAMP1 expression; this effect was abolished by miR-103a-3p overexpression. Taken together, the data show that miR-103a-3p/VAMP1 is critical for surgery-induced microglial activation of POCD.
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Alqosaibi AI, Abdel-Ghany S, Al-Mulhim F, Sabit H. Vorinostat enhances the therapeutic potential of Erlotinib via MAPK in lung cancer cells. Cancer Treat Res Commun 2022; 30:100509. [PMID: 35026535 DOI: 10.1016/j.ctarc.2022.100509] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Lung cancer is the second most common cancer in both men and women, with an estimated 235,760 new cases and 131,880 deaths in 2021 in the US. Despite the modern therapies being available such as radiotherapy and chemotherapy, death rates are still increasing. Erlotinib (ERL) is one of the treatment options for lung cancer, although the probability for the patients to develop resistance to ERL constrains its reliability. The aim of the present study is to assess the synergetic effect of combining ERL with vorinostat (SAHA) on the progression of lung cancer cells. RESULTS Adenocarcinoma alveolar basal epithelial cells (A549) were treated with either ERL, SAHA as mono drugs or with the combination of them for 24 h. Cytotoxicity assay and cell cycle analysis along with apoptosis detection were investigated. The expression profile of CDH1, TGF1, and MAPK was also assessed. Results showed an elevation in the apoptosis level in all treatments compared to WISH; the normal human amnion-derived cells. Furthermore, the treatments caused the cell cycle to arrest at G2/M, indicating its cytotoxic activity. CONCLUSION The combination of SAHA and ERL significantly increased the level of apoptosis in lung cancer cells. Meanwhile, this combination treatment downregulated MAPK compared to the mono drugs and the control cells, suggesting the potential role of MAPK in regulating apoptosis and cell cycle machinery in lung cancer.
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Affiliation(s)
- Amany I Alqosaibi
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, P. O. 4 Box 1982, Saudi Arabia
| | - Shaimaa Abdel-Ghany
- Department of Environmental Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza, Egypt
| | - Fatma Al-Mulhim
- Breast Imaging Division, KFHU, Imam Abdulrahman Bin Faisal University, Saudi Arabia
| | - Hussein Sabit
- Department of Environmental Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza, Egypt.
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Wang J, Huo C, Yin J, Tian L, Ma L, Wang D. Hypermethylation of the Promoter of miR-338-5p Mediates Aberrant Expression of ETS-1 and Is Correlated With Disease Severity Of Astrocytoma Patients. Front Oncol 2021; 11:773644. [PMID: 34858853 PMCID: PMC8632532 DOI: 10.3389/fonc.2021.773644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 10/25/2021] [Indexed: 12/17/2022] Open
Abstract
The pro-oncogene ETS-1 (E26 transformation-specific sequence 1) is a key regulator of the proliferation and invasion of cancer cells. The present work examined the correlation of the aberrant expression of ETS-1 with histological or clinical classification of astrocytoma: grade I (pilocytic astrocytoma), grade II (diffuse astrocytoma), grade III (anaplastic astrocytoma), and grade IV (glioblastoma multiforme). MicroRNA, miR-338-5p, was predicted by an online tool (miRDB) to potentially target the 3’ untranslated region of ETS-1; this was confirmed by multi-assays, including western blot experiments or the point mutation of the targeting sites of miR-338-5p in ETS-1’s 3’untralation region (3’UTR). The expression of miR-338-5p was negatively associated with that of ETS-1 in astrocytoma, and deficiency of miR-338-5p would mediate aberrant expression of ETS-1 in astrocytoma. Mechanistically, hypermethylation of miR-338-5p by DNA methyltransferase 1 (DNMT1) resulted in repression of miR-338-5p expression and the aberrant expression of ETS-1. Knockdown or deactivation of DNMT1 decreased the methylation rate of the miR-338-5p promoter, increased the expression of miR-338-5p, and repressed the expression of ETS-1 in astrocytoma cell lines U251 and U87. These results indicate that hypermethylation of the miR-338-5p promoter by DNMT1 mediates the aberrant expression of ETS-1 related to disease severity of patients with astrocytoma.
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Affiliation(s)
- Junping Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China.,Department of Neurosurgery, The Sinopharm Tongmei General Hospital, Datong, China
| | - Cheng Huo
- Department of Neurosurgery, The Sinopharm Tongmei General Hospital, Datong, China
| | - Jinzhu Yin
- Department of Neurosurgery, The Sinopharm Tongmei General Hospital, Datong, China
| | - Lixia Tian
- Department of Neurosurgery, The Sinopharm Tongmei General Hospital, Datong, China
| | - Lili Ma
- Department of Neurology, The Yantaishan Hospital, Yantai, China
| | - Dongsheng Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
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10
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Zou XZ, Zhou XH, Feng YQ, Hao JF, Liang B, Jia MW. Novel inhibitor of OCT1 enhances the sensitivity of human esophageal squamous cell carcinoma cells to antitumor agents. Eur J Pharmacol 2021; 907:174222. [PMID: 34087221 DOI: 10.1016/j.ejphar.2021.174222] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/22/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most fatal malignancies of the digestive system, and shows an especially high incidence in some regions of China. Octamer transcription factors are a family of transcription factors whose DNA-binding domain is a POU domain. OCT transcription factors (OCT-TFs) mediate maintenance of the pluripotency of embryonic stem cells. We measured expression of OCT-TFs in ESCC clinical specimens. Among the OCTs tested, OCT1 showed the highest expression in ESCC tissues. Using molecular docking, we discovered a small-molecule inhibitor, which we named "novel inhibitor of OCT1" (NIO-1), for OCT1. Treatment with NIO-1 inhibited recruitment of OCT1 to the promoter region of its downstream genes and, consequently, repressed OCT1 activation. Treatment with NIO-1 enhanced the susceptibility of ESCC cells to chemotherapeutic agents. Therefore, OCT1 may be a valuable target for ESCC treatment, and NIO-1 could be a promising therapeutic agent.
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Affiliation(s)
- Xiao-Zheng Zou
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning Province, PR China.
| | - Xiu-Hua Zhou
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning Province, PR China.
| | - Ying-Qi Feng
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning Province, PR China.
| | - Jun-Feng Hao
- Department of Nephrology, Jin Qiu Hospital of Liaoning Province / Geriatric Hospital of Liaoning Province, Shenyang, 110016, Liaoning Province, PR China.
| | - Bing Liang
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning Province, PR China.
| | - Meng-Wei Jia
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning Province, PR China.
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He W, Gong S, Wang X, Dong X, Cheng H. DNA methylation integratedly modulates the expression of Pit-Oct-Unt transcription factors in esophageal squamous cell carcinoma. J Cancer 2021; 12:1634-1643. [PMID: 33613750 PMCID: PMC7890322 DOI: 10.7150/jca.49231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 12/20/2020] [Indexed: 12/14/2022] Open
Abstract
Background: Dysregulation of Pit-Oct-Unc family transcription factors has been implicated in esophageal squamous cell carcinoma (ESCC). In this study, we evaluated the expression and promoter methylation status of Octamer (OCT) transcription factor genes in human ESCC clinical specimens to investigate the mechanism underlying this observation along with the clinical significance. Methods: Total DNA or RNA was extracted from ESCC tissue specimens and the mRNA level of genes encoding the transcription factors OCT1, OCT2, OCT3/OCT4, OCT5, OCT7, OCT9, and OCT11 were evaluated by quantitative PCR. The DNA methylation status of gene promoters was assessed by bisulfite pyrosequencing and next-generation sequencing. The relationship between the expression of these transcription factors and ESCC proliferation was investigated in vitro and in vivo with the colony formation assay and a mouse xenograft tumor model, respectively. We also examined the correlation between OCT gene expression and promoter methylation and clinicopathologic characteristics of ESCC. Results:OCT1 was upregulated whereas OCT4, OCT6, and OCT11 were downregulated in ESCC compared to non-tumor tissue. OCT2, OCT7, and OCT9 were undetected in all samples. OCT1, OCT6, and OCT11 levels were negatively correlated with the methylation of their respective promoters, but there was no relationship between OCT4 expression and promoter methylation status. Conclusion: Changes in promoter methylation rate underlie the observed alterations in OCT1, OCT6, and OCT11 expression in ESCC, whereas another mechanism is likely responsible for the dysregulation of OCT4.
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Affiliation(s)
- Wei He
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan province, China
| | - Shuai Gong
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan province, China
| | - Xin Wang
- Department of Radiotherapy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan province, China
| | - Xinhua Dong
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan province, China
| | - Hua Cheng
- Department of Oncology, Xiayi Hospital of Traditional Chinese Medicine. Shangqiu 476400, Henan province, China
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12
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microRNA-103a-3p confers protection against lipopolysaccharide-induced sepsis and consequent multiple organ dysfunction syndrome by targeting HMGB1. INFECTION GENETICS AND EVOLUTION 2020; 89:104681. [PMID: 33333289 DOI: 10.1016/j.meegid.2020.104681] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/08/2020] [Accepted: 12/12/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Sepsis and subsequent multiple organ dysfunction syndrome (MODS) have high global incidence and mortality rate, imposing tremendous health burden. microRNAs (miRNAs or miRs) are implicated in the pathogenesis of sepsis and MODS. The aim of this study is to explore the potential mechanisms of miR-103a-3p targeted high mobility group box 1 (HMGB1) involvement in the pathogenesis of sepsis complicated with multiple organ dysfunction syndrome (MODS). METHODS A mouse sepsis model was induced by lipopolysaccharide (LPS). Bone marrow-derived macrophages were collected and LPS was used to establish a cellular inflammation model. Targeted binding between miR-103a-3p and HMGB1 was verified by a double luciferase assay and their roles in LPS-induced sepsis were further explored using gain-of-function experiments. RESULTS miR-103a-3p was decreased while HMGB1 was increased in sepsis. In LPS-induced mouse sepsis models, the downregulation of HMGB1 was found to result in reductions in NO, TNF-α, IL-1β, IL-6, lung myeloperoxidase activity, pulmonary microvascular albumin leakage, serum alanine aminotransferase, aspartate aminotransferase activity, and lung and liver tissue apoptosis. Additionally, decreased HMGB1 blunted the inflammatory response and increased survival rate of modeled mice. Importantly, HMGB1 was confirmed to a target gene of miR-103a-3p. In cellular inflammation models, miR-103a-3p was found to alleviate LPS-induced sepsis and MODS in vitro by decreasing HMGB1. CONCLUSIONS Taken together, our results demonstrated the inhibitory role of miR-103a-3p in sepsis via inhibiting HMGB1 expression.
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Yu M, Tian Y, Wu M, Gao J, Wang Y, Liu F, Sheng S, Huo S, Bai J. A comparison of mRNA and circRNA expression between squamous cell carcinoma and adenocarcinoma of the lungs. Genet Mol Biol 2020; 43:e20200054. [PMID: 33196759 PMCID: PMC7654371 DOI: 10.1590/1678-4685-gmb-2020-0054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 08/05/2020] [Indexed: 02/01/2023] Open
Abstract
Lung squamous cell carcinoma (LUSC) and lung adenocarcinoma (LUAD) are the two major subtypes of non-small-cell lung cancer (NSCLC). This study aimed to compare mRNA and circRNA expression patterns between LUSC and LUAD. Cancer tissues from 8 LUSC patients and 12 LUAD patients were collected to obtain mRNA and circRNA expression profiles. The differentially expressed mRNAs (DEmRNAs) and circRNAs (DE-circRNAs) between LUSC and LUAD were screened. Afterwards, miRNA-DEcircRNA pairs and miRNA-DEmRNA pairs were predicted to construct a competing endogenous RNAs (ceRNAs) network, followed by functional enrichment analysis and survival analysis. In total, 635 DEmRNAs and 245 DEcircRNAs were obtained. The ceRNA analysis revealed that genes, such as EPHA2, EPHA7, NTRK2, CDK6, hsa_circ_027570, hsa_circ_006089, and hsa-circ_035997, had distinct expression patterns between LUSC and LUAD. Also, functional enrichment analysis indicated that DEmRNAs were mainly enriched in ERK1 and ERK2 cascade. Survival analyses suggested that STXBP1 and PMEPA1 were associated the prognosis of with both LUAD and LUSC, whereas EPHA2 and CDK6 might serve as prognostic factors for LUSC and LUAD, respectively. In conclusion, genes such as EPHA2, EPHA7, NTRK2, and CDK6 had different patterns in the two major histological subtypes of NSCLC. Notably, EPHA2 and CDK6 might be considered as potential therapeutic targets for LUSC and LUAD, respectively.
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Affiliation(s)
- Min Yu
- Shaanxi Provincial People's Hospital, Department of Oncology Medicine, Xi'an, Shaanxi, China
| | - Yingxuan Tian
- Shaanxi Provincial People's Hospital, Department of Elderly Respiratory Medicine, Xi'an, Shaanxi, China.,Shaanxi Provincial People's Hospital, Xi'an Medical College, Department of Elderly Medicine, Xi'an, Shaanxi, China
| | - Min Wu
- Shaanxi Provincial People's Hospital, Department of Elderly Respiratory Medicine, Xi'an, Shaanxi, China
| | - Jinglong Gao
- Shaanxi Provincial People's Hospital, Department of Elderly Medicine, Xi'an, Shaanxi, China
| | - Yuan Wang
- Shaanxi Provincial People's Hospital, Department of Preventive Health Section, Xi'an, Shaanxi, China
| | - Fuqiang Liu
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xi'an, Shaanxi, China
| | - Sen Sheng
- University of Arkansas for Medical Science, Neurology Department, Little Rock, AR, USA
| | - Shufen Huo
- Shaanxi Provincial People's Hospital, Department of Elderly Respiratory Medicine, Xi'an, Shaanxi, China
| | - Jun Bai
- Shaanxi Provincial People's Hospital, Department of Oncology Medicine, Xi'an, Shaanxi, China
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14
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Hu Z, Xiao D, Qiu T, Li J, Liu Z. MicroRNA-103a Curtails the Stemness of Non-Small Cell Lung Cancer Cells by Binding OTUB1 via the Hippo Signaling Pathway. Technol Cancer Res Treat 2020; 19:1533033820971643. [PMID: 33174524 PMCID: PMC7672774 DOI: 10.1177/1533033820971643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Although microRNA-103a (miR-103a) dysfunction has been implicated in various cancers, its relevance to non-small cell lung cancer (NSCLC) has not been clarified. This study was conducted to examine the molecular mechanism underlying the regulatory role of miR-103a in NSCLC. METHODS Kaplan-Meier analysis was carried out to assess the relationship between overall survival of NSCLC patients and miR-103a expression. Reverse-transcription quantitative polymerase chain reaction and western blot analyses were applied to evaluate the expression of relevant genes in tissues and cells. Sphere formation, MTS, flow cytometry, and Transwell assays were performed to characterize stemness. Dual luciferase reporter gene assays were used to clarify the binding relationship between miR-103a and ovarian tumor domain-containing ubiquitin aldehyde binding protein 1 (OTUB1). Finally, western blot analysis was used to assess the involvement of the Hippo pathway in NSCLC. RESULTS In NSCLC tissues and cells, miR-103a was expressed at low levels, whereas OTUB1 was expressed at high levels. Higher miR-103 expression levels were associated with a better prognosis for patients with NSCLC. When miR-103a was overexpressed, cell viability and stemness decreased, whereas apoptosis and cell cycle arrest were facilitated. The expression of phosphorylated YAP also decreased significantly. Opposite trends were observed after miR-103a silencing. OTUB1 expression and YAP phosphorylation decreased in the presence of miR-103a, and OTUB1 overexpression blocked the inhibitory effects of miR-103a on NSCLC cells. CONCLUSION The miR-103a/OTUB1/Hippo axis may play a role in modulating the malignant behavior and stemness of cancer stem cells and thus could be a potential therapeutic target for the management of NSCLC.
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Affiliation(s)
- Zhenzhen Hu
- Department of Thoracic Oncology Ward 2, 146391Jiangxi Tumor Hospital, Nanchang, Jiangxi, People's Republic of China
| | - Dan Xiao
- Department of Thoracic Oncology Ward 2, 146391Jiangxi Tumor Hospital, Nanchang, Jiangxi, People's Republic of China
| | - Tingting Qiu
- Department of Thoracic Oncology Ward 2, 146391Jiangxi Tumor Hospital, Nanchang, Jiangxi, People's Republic of China
| | - Jun Li
- Department of Thoracic Oncology Ward 2, 146391Jiangxi Tumor Hospital, Nanchang, Jiangxi, People's Republic of China
| | - Zhentian Liu
- Department of Thoracic Oncology Ward 2, 146391Jiangxi Tumor Hospital, Nanchang, Jiangxi, People's Republic of China
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15
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Gao Q, Fang X, Chen Y, Li Z, Wang M. Exosomal lncRNA UCA1 from cancer-associated fibroblasts enhances chemoresistance in vulvar squamous cell carcinoma cells. J Obstet Gynaecol Res 2020; 47:73-87. [PMID: 32812305 DOI: 10.1111/jog.14418] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/07/2020] [Accepted: 07/12/2020] [Indexed: 12/29/2022]
Abstract
AIM In the current work, we aimed to explore whether Cancer-associated fibroblasts (CAF) exosomes played crucial roles in vulvar squamous cell carcinoma (VSCC) chemoresistance via mediating long noncoding RNAs (lncRNA). METHODS The IC50 value and cell apoptosis were assessed by the Cell Counting-8 Kit (CCK-8) assay and flow cytometry, respectively. Western blot analysis was used for the measurement of protein levels. The levels of urothelial cancer-associated 1 (UCA1), miR-103a and WEE1 G2 checkpoint kinase (WEE1) mRNA were detected by quantitative real-time polymerase chain reaction (qRT-PCR). The target relationships among miR-103a, UCA1 and WEE1 were confirmed by dual-luciferase reporter assays. Xenograft model mice were established to observe the impact of exosomal UCA1 on cisplatin (CDDP) resistance in vivo. RESULTS Our data indicated that CAF enhanced CDDP resistance of VSCC cells in vitro. Extracellular UCA1 was transferred by exosomes derived from CAF. Exosomal UCA1 derived from CAF conferred VSCC cell resistance to CDDP. Moreover, UCA1 functioned as a miR-103a sponge in VSCC cells. The promotion of exosomal UCA1 on VSCC cell resistance to CDDP was mediated by miR-103a. WEE1 was a direct target of miR-103a, and exosomal miR-103a from CAF weakened CDDP resistance of VSCC cells by WEE1. Furthermore, exosomal UCA1 regulated WEE1 expression through sponging miR-103a. Additionally, exosomal UCA1 enhanced tumor growth and CDDP resistance in vivo. CONCLUSION Our findings suggested exosomal UCA1 derived from CAF conferred VSCC cell resistance to CDDP in vitro and in vivo at least partly through the miR-103a/WEE1 axis, highlighting a novel therapeutic method for improving the clinical benefits of CDDP chemotherapy in VSCC patients.
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Affiliation(s)
- Qianqian Gao
- Department of Pathology, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, China
| | - Xiaohui Fang
- Department of Pathology, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, China.,Department of Orthopedics, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, China
| | - Yufang Chen
- Department of Pathology, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, China
| | - Ziyan Li
- Department of Pathology, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, China
| | - Meihua Wang
- Department of Pathology, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, China
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Wang JB, Chen XL, Han ZB, Wang HW, Wang ZH, Li NN, Lin ZG. Long non-coding RNA TP73-AS1 contributes to glioma tumorigenesis by sponging the miR-103a/GALNT7 pathway. Brain Res 2020; 1741:146886. [PMID: 32416102 DOI: 10.1016/j.brainres.2020.146886] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 12/19/2022]
Abstract
Glioma is the most aggressive, commonly occurring brain tumor in adults. Long non-coding RNAs (lncRNAs) are among the gene expression regulators in cancer development. Previous research posited that the up-regulation of LncRNA TP73-AS1 (TP73-AS1) in glioma is linked to low survival rates. However, the precise LncRNA TP73-AS1 mechanism in glioma remains unknown. Herein, we found that TP73-AS1 was up-regulated in glioma and was associated with a dismal prognosis. The silencing of TP73-AS1 repressed the multiplication of glioma cells and caused cell death. Mechanistically, we identified that TP73-AS1 in glioma acts as a ceRNA by sequestering miR-103a from GALNT7. Further, the results of this study revealed a reciprocal expression between TP73-AS1 and miR-103a, and a positive regulation between TP73-AS1 and GALNT7, validating the identified mechanism. Besides, luciferase reporter assay identified miR-103a as the direct binding site of both TP73-AS1 and GALNT7. Moreover, the findings of CCK-8 and colony-formation assays indicated that exogenous expression of GALNT7 reversed TP73-AS1-induced division inhibition of glioma cells. Altogether, our results established that TP73-AS1 facilitates the progression of glioma through competing for endogenous RNA (ceRNA) in a TP73-AS1/miR-103a/GALNT7 loop.
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Affiliation(s)
- Jia-Bin Wang
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Xiao-Li Chen
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Zhi-Bin Han
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Hong-Wei Wang
- Department of Anesthesiology, 242 Hospital of Harbin, Harbin 150081, China
| | - Zhi-Hua Wang
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Nan-Nan Li
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Zhi-Guo Lin
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150081, China.
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Liu XX, Yang YE, Liu X, Zhang MY, Li R, Yin YH, Qu YQ. A two-circular RNA signature as a noninvasive diagnostic biomarker for lung adenocarcinoma. J Transl Med 2019; 17:50. [PMID: 30777071 PMCID: PMC6380039 DOI: 10.1186/s12967-019-1800-z] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 02/14/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Recently, circular RNAs (circRNAs) have been reported to be microRNA sponges and play essential roles in cancer development. This study aimed to evaluate whether circulating circRNAs could be used as diagnostic biomarkers for lung adenocarcinoma (LUAD). METHODS The Gene Expression Omnibus (GEO) dataset was used to investigate differentially expressed circRNAs (DEcircRNAs) in paired LUAD tissues and adjacent nontumor tissues. The expression levels of the host genes were analyzed in The Cancer Genome Atlas (TCGA)-LUAD dataset, and the prognostic value was assessed using the Kaplan-Meier plotter. Quantitative real-time PCR (qRT-PCR) was performed to validate the expression of candidate circRNAs in the LUAD plasma and cells. The CCK8 assay was used to measure the function of circRNAs in cell proliferation. Competing endogenous RNA (ceRNA) network, gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed to predict the possible mechanisms and functions of circRNAs in LUAD. RESULTS Two upregulated and two downregulated circRNAs were identified as candidate circRNAs using bioinformatics analysis. qRT-PCR demonstrated that hsa_circ_0005962 was upregulated in LUAD plasma and cells, whereas hsa_circ_0086414 was downregulated. Receiver operating characteristic (ROC) curve analysis confirmed that a signature comprising the two circRNAs had good diagnostic potential, with an area under the ROC curve (AUC) of 0.81 (P < 0.0001). In addition, we observed that overexpression of plasma hsa_circ_0086414 was related to EGFR mutations (P = 0.001). Plasma hsa_circ_0005962 displayed significantly different expression before and after surgery in patients with LUAD (P < 0.0001). In vitro experiments suggested that hsa_circ_0005962 promoted LUAD cell proliferation. For future studies, we predicted the circRNA-miRNA-mRNA network for hsa_circ_0005962. Bioinformatics analysis revealed that hsa_circ_0005962 might be involved in LUAD development. CONCLUSION A circRNA signature was identified as a potential noninvasive biomarker for LUAD diagnosis.
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Affiliation(s)
- Xiao-Xia Liu
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Yi-E Yang
- Department of Clinical Laboratory, Qianfoshan Hospital of Shandong Province, Jinan, 250014, China
| | - Xiao Liu
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Meng-Yu Zhang
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Rui Li
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Yun-Hong Yin
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Yi-Qing Qu
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China.
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