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https://www.readbyqxmd.com/read/28819748/lipoxin-a4-attenuates-bronchopulmonary-dysplasia-via-upregulation-of-let-7c-and-downregulation-of-tgf-%C3%AE-1-signaling-pathway
#1
Xiao-Qing Chen, Sheng-Hua Wu, Yan-Yan Luo, Bing-Jie Li, Shu-Jun Li, Hong-Yan Lu, Rui Jin, Zhong-Yi Sun
Transforming growth factor-β (TGF-β) superfamily members are key regulators for lung development and progress of bronchopulmonary dysplasia (BPD). The mechanisms by which lipoxin A4 (LXA4) attenuates development of BPD have not been clarified. Neonatal murine BPD models were inducted by hyperoxia treatment. Neonatal mice were exposed to room air or 85% O2 hyperoxia with or without treatment with 5S,6R-methyl-LXA4 or anti-TGF-β antibodies. Mouse lung epithelial cells (MLE-12 cells) and mouse embryonic fibroblasts (NIH/3T3 cells) were cultured in room air or 85% O2 followed by treatment of LXA4, anti-TGF-β antibodies, and let-7c mimic/anti-microRNA transfections...
August 17, 2017: Inflammation
https://www.readbyqxmd.com/read/28816543/mir-541-5p-regulates-lung-fibrosis-by-targeting-cyclic-nucleotide-phosphodiesterase-1a
#2
Liqin Ren, Chunyan Yang, Yongfeng Dou, Renhui Zhan, Yi Sun, Yan Yu
AIM OF THE STUDY: Idiopathic pulmonary fibrosis (IPF) is a lethal human disease with short survival time and few treatment options. In this study, we aim to demonstrate that cyclic nucleotide phosphodiesterase 1A (PDE1A), a Ca2+/calmodulin-stimulating PDE family member, plays a critical role in the induction of fibrosis and angiogenesis in the lung. MATERIALS AND METHODS: To induce pulmonary damage, adult male SD rats were treated with bleomycin in a dose of 6 mg/kg body weight by a single intratracheal instillation...
August 17, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28811219/trinucleotide-repeat-containing-6c-tnrc6c-is-essential-for-microvascular-maturation-during-distal-airspace-sacculation-in-the-developing-lung
#3
Hua Guo, Yana Kazadaeva, Fabian E Ortega, Narasimaswamy Manjunath, Tushar J Desai
GW182 (also known asTNRC6) family members are critically involved in the final effector phase of miRNA-mediated mRNA repression. The three mammalian paralogs, TNRC6a, b and c, are thought to be redundant based on Argonaute (Ago) binding, tethering assays, and RNAi silencing of individual members in cell lines. To test this idea, we generated TNRC6a, b and c knockout mice. TNRC6a mutants die at mid-gestation, while b- and c- deleted mice are born at a Mendelian ratio. However, the majority of TNRC6b and all TNRC6c mutants die within 24h after birth, the latter with respiratory failure...
August 12, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28810927/stat3-mediated-upregulation-of-lncrna-hoxd-as1-as-a-cerna-facilitates-liver-cancer-metastasis-by-regulating-sox4
#4
Hui Wang, Xisong Huo, Xin-Rong Yang, Jia He, Lijun Cheng, Na Wang, Xuan Deng, Haojie Jin, Ning Wang, Cun Wang, Fangyu Zhao, Jingyuan Fang, Ming Yao, Jia Fan, Wenxin Qin
BACKGROUND: Several of the thousands of human long noncoding RNAs (lncRNAs) have been functionally characterized, yet their potential involvement in hepatocellular carcinoma (HCC) remains poorly understood. METHODS: LncRNA-HOXD-AS1 was identified by microarray and validated by real-time PCR. The clinicopathological significance of HOXD-AS1 was analyzed by Kaplan-Meier method. Chromatin immunoprecipitation was conducted to examine the mechanism of HOXD-AS1 upregulation...
August 14, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28809126/comprehensive-epigenetic-analysis-of-the-signature-genes-in-lung-adenocarcinoma
#5
Yunfeng Zhang, Weidong Zhao, Jia Zhang
AIM: This study aimed to explore the epigenetic modifications of signature genes in lung adenocarcinoma. MATERIALS & METHODS: The data of miRNA expression, mRNA expression and DNA methylation were downloaded from The Cancer Genome Atlas. Differential analysis was performed, followed by correlation analysis of miRNA-mRNA and DNA methylation-mRNA. RESULTS: A total of 14 significant inverse correlations between gene expression and DNA methylation were identified, the expressions of which were selected for further validation via GSE27262, displaying similar pattern with that of the integrated analysis...
August 15, 2017: Epigenomics
https://www.readbyqxmd.com/read/28806967/microrna-181c-inhibits-cigarette-smoke-induced-chronic-obstructive-pulmonary-disease-by-regulating-ccn1-expression
#6
Yong Du, Yi Ding, Xuru Chen, Zhoufang Mei, Heyuan Ding, Yi Wu, Zhijun Jie
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is an obstinate pulmonary disease, causing irreversible alveoli collapse and increasing the risk for cardiovascular disease. Accumulating evidence has shown that the dysregulation of miRNAs is crucially involved in the pathogenesis and development of COPD. However, the effects and role of microRNA-181c (miR-181c) have not been investigated in a murine model of COPD. METHODS: miR-181c expression was detected in human lung tissue samples of 34 patients, an in vivo murine model of CS exposure, and primary human bronchial epithelial cells (HBECs) by qRT-PCR...
August 15, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28806401/a-gdf15-3-utr-variant-rs1054564-results-in-allele-specific-translational-repression-of-gdf15-by-hsa-mir-1233-3p
#7
Ming-Sheng Teng, Lung-An Hsu, Shu-Hui Juan, Wen-Chi Lin, Ming-Cheng Lee, Cheng-Wen Su, Semon Wu, Yu-Lin Ko
Growth differentiation factor 15 (GDF15) is a strong predictor of cardiovascular events and mortality in individuals with or without cardiovascular diseases. Single nucleotide polymorphisms (SNPs) in microRNA (miRNA) target sites, also known as miRSNPs, are known to enhance or weaken miRNA-mRNA interactions and have been linked to diseases such as cardiovascular disease and cancer. In this study, we aimed to elucidate the functional significance of the miRSNP rs1054564 in regulating GDF15 levels. Two rs1054564-containing binding sites for hsa-miR-873-5p and hsa-miR-1233-3p were identified in the 3' untranslated region (UTR) of the GDF15 transcript using bioinformatics tools...
2017: PloS One
https://www.readbyqxmd.com/read/28800790/mir-641-functions-as-a-tumor-suppressor-by-targeting-mdm2-in-human-lung-cancer
#8
Qinglong Kong, Nan Shu, Jun Li, Ning Xu
Lung cancer is the leading cause of deaths due to cancer. Studies suggest important role of microRNAs (miRNAs) in a variety of cancer, including lung cancer. In the present study, we evaluated the role of miR-641 in human lung cancer A549 cells. Quantitative RT-PCR and Western blot was used to measure the mRNA and protein expression, respectively. Cell viability and cell apoptosis were respectively measured by MTT assay and flow cytometry. Besides, luciferase activity assay was used to identify the target of miR-641...
August 11, 2017: Oncology Research
https://www.readbyqxmd.com/read/28800319/mir-503-3p-induces-apoptosis-of-lung-cancer-cells-by-regulating-p21-and-cdk4-expression
#9
Yi Sun, Li Li, Shigang Xing, Yinghua Pan, Yunxiang Shi, Linghua Zhang, Qiang Shen
Studies have shown that microRNAs (miRNAs) can promote or suppress tumor growth and therefore act as targets for cancer therapy. Hsa-miR-503-5p, a mature miRNA derived from 5' ends of pre-miR-503, has been proved to regulate cell proliferation, transformation, migration and invasion. However, the biological function of miR-503-3p derived from 3' ends of pre-miR-503 has never been reported. In current study, we found that miR-503-3p inhibits lung cancer cell viability and induces cell apoptosis. To better understand the molecular mechanism underlying the miR-503-3p participating in this process, PCR array and RNA-sequencing (RNA-seq) were performed and some differential expression genes were discovered between NC and miR-503-3p treated groups...
July 28, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28799781/microrna-29c-prevents-pulmonary-fibrosis-by-regulating-epithelial-cell-renewal-and-apoptosis
#10
Ting Xie, Jiurong Liang, Yan Geng, Ningshan Liu, Adrianne Kurkciyan, Vrishika Kulur, Dong Leng, Nan Deng, Zhenqiu Liu, Jianbo Song, Peter Chen, Paul W Noble, Dianhua Jiang
Successful repair and renewal of alveolar epithelial cells are critical in prohibiting the accumulation of myofibroblasts in pulmonary fibrogenesis. MicroRNAs (miRNAs) are multi-focal regulators involved in lung injury and repair. But the contribution of miRNAs to AEC2 renewal and apoptosis is incompletely understood. We report that microRNA-29c (MiR-29c) expression is lower in AEC2s of individuals with idiopathic pulmonary fibrosis (IPF) than healthy lungs. Epithelial cells overexpressing miR-29c show higher proliferative rate and viability...
August 11, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28799568/association-of-long-non-coding-rna-h19-and-microrna-21-expression-with-the-biological-features-and-prognosis-of-non-small-cell-lung-cancer
#11
Y Zhou, B Sheng, Q Xia, X Guan, Y Zhang
In recent years, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) have been shown to play important roles in tumor biological function. The aim of this study was to investigate the diagnostic and prognostic value of lncRNA H19 and miR-21 expression in non-small-cell lung cancer (NSCLC). H19 and miR-21 expression was measured in tumor tissues and corresponding non-tumor lung tissues from 200 patients by quantitative reverse transcription polymerase chain reaction. Moreover, the in vitro and in vivo effects of H19 knock out in A549 cells were investigated...
August 11, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28798252/pollen-induced-oxidative-dna-damage-response-regulates-mirnas-controlling-allergic-inflammation
#12
Leopoldo Aguilera-Aguirre, Wenjing Hao, Lang Pan, Xiaoxue Li, Alfredo Saavedra-Molina, Attila Bacsi, Zsolt Radak, Sanjiv Sur, Allan R Brasier, Xueqing Ba, Istvan Boldogh
A mucosal oxidative burst is a hallmark response to pollen exposure that promotes allergic inflammatory responses. Reactive species constituents of oxidative stress signal via the modification of cellular molecules including nucleic acids. One of the most abundant oxidative genomic base damage is 8-oxo-7,8-dihydroguanine (8-oxoG), which is removed from DNA by 8-oxoguanine DNA glycosylase1 (OGG1). OGG1 in complex with 8-oxoG acts as a GDP-GTP exchange factor and induces acute inflammation; however, the mechanism(s) by which OGG1 signaling regulates allergic airway inflammation is not known...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28796252/microrna-34-449-targets-igfbp-3-and-attenuates-airway-remodeling-by-suppressing-nur77-mediated-autophagy
#13
Huiming Yin, Shu Zhang, Yahong Sun, Sha Li, Yunye Ning, Yuchao Dong, Yan Shang, Chong Bai
Autophagy plays critical roles in airway inflammation and fibrosis-mediated airway remodeling and many factors including proinflammatory cytokines and inflammation related pathways are involved in the process. The aim of the present study was to examine the role of epithelial microRNAs (miRNAs) in autophagy-mediated airway remodeling and to identify the factors involved and the underlying mechanisms. Serum miR-34/449, inflammatory factors, and autophagy and fibrosis-related proteins were determined by real-time PCR, enzyme-linked immunosorbent assay and western blotting in 46 subjects with asthma and 10 controls and in the lung epithelial cell line BEAS-2B induced with IL-13 and treated with miRNA mimics...
August 10, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28791372/microrna-212-functions-as-a-tumor-suppressor-in-human-non-small-cell-lung-cancer-by-targeting-sox4
#14
Tingting Tang, Liting Huan, Shujuan Zhang, Hui Zhou, Lei Gu, Xiaohui Chen, Liang Zhang
Increasing evidence has revealed that aberrant expression of miRNAs contributes to non-small cell lung cancer (NSCLC) development and progression. However, the roles and mechanisms of various miRNAs in NSCLC remain to be determined. In the present study, we confirmed that reduced miR-212 expression was present in NSCLC tissues and cell lines. Our clinical analysis revealed that the reduced miR-212 expression was significantly correlated with poor prognostic features including positive lymph node metastasis and advanced tumor-node-metastasis (TNM) stage...
August 7, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28791371/comprehensive-analysis-of-aberrantly-expressed-microrna-profiles-reveals-potential-biomarkers-of-human-lung-adenocarcinoma-progression
#15
Jing Sui, Ru-Song Yang, Si-Yi Xu, Yan-Qiu Zhang, Cheng-Yun Li, Sheng Yang, Li-Hong Yin, Yue-Pu Pu, Ge-Yu Liang
Lung adenocarcinoma (LUAD) is a complex disease that poses challenges for diagnosis and treatment. The aim of the present study is to investigate LUAD-specific key microRNAs (miRNAs) from large-scale samples in The Cancer Genome Atlas (TCGA) database. We used an integrative computational method to identify LUAD-specific key miRNAs related to TNM stage and lymphatic metastasis from the TCGA database. Twenty-five LUAD-specific key miRNAs (fold change >2, p<0.05) from the TCGA database were investigated, and 15 were found to be aberrantly expressed with respect to clinical features...
August 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28790336/identifying-the-mirna-signature-associated-with-survival-time-in-patients-with-lung-adenocarcinoma-using-mirna-expression-profiles
#16
Srinivasulu Yerukala Sathipati, Shinn-Ying Ho
Lung adenocarcinoma is a multifactorial disease. MicroRNA (miRNA) expression profiles are extensively used for discovering potential theranostic biomarkers of lung cancer. This work proposes an optimized support vector regression (SVR) method called SVR-LUAD to simultaneously identify a set of miRNAs referred to the miRNA signature for estimating the survival time of lung adenocarcinoma patients using their miRNA expression profiles. SVR-LUAD uses an inheritable bi-objective combinatorial genetic algorithm to identify a small set of informative miRNAs cooperating with SVR by maximizing estimation accuracy...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28789966/pecanex-functions-as-a-competitive-endogenous-rna-of-s-phase-kinase-associated-protein-2-in-lung-cancer
#17
Jingqiu Li, Haihua Tian, Jinchang Pan, Nan Jiang, Jie Yang, Chengwei Zhou, Dazhi Xu, Xiaodan Meng, Zhaohui Gong
Investigating the RNA-RNA interactions involving in the initiation and progression of non-small cell lung cancer (NSCLC) may provide promising diagnostic and targeted therapeutic strategies. Here, we showed that pecanex (PCNX) positively regulates the mRNA and protein expressions of S-phase kinase associated protein 2 (Skp2) in miRNA- and 3' UTR-dependent manners. And miR-26, miR-182, miR-340 and miR-506 were verified as the common miRNAs shared by Skp2 and PCNX. Intriguingly, we initially uncovered that PCNX-3' UTR promotes cell growth, proliferation and cell cycle progression, and suppresses apoptosis of lung cancer cells, which is consistent with the oncogenic activity of Skp2-3' UTR...
August 5, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28781815/preliminary-data-on-microrna-expression-profiles-in-a-group-of-south-african-patients-diagnosed-with-chronic-myeloid-leukaemia
#18
Andrea Prinsloo, Roger Pool, Chantal Van Niekerk
Micro-ribonucleic acids (miRNAs) are small functional non-coding RNAs that downregulate gene expression at the post-transcriptional level. Abnormal expression of specific miRNAs has been recorded in chronic lymphocytic leukaemia, other non-Hodgkin B-cell lymphomas, lung cancer and chronic myeloid leukaemia (CML). The aim of this study was to compare miRNA expression profiles among patients with newly diagnosed CML, those on established therapy with imatinib mesylate, and healthy individuals. The expression of 88 miRNAs was evaluated in a total of nine samples divided into three groups: Group 1 comprised three samples collected from newly diagnosed CML patients; group 2 consisted of three samples collected from patients on therapy; the remaining three samples were collected from healthy volunteers (control group)...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28780788/-therapeutic-effect-of-mir-489-in-a-mouse-model-of-silica-induced-matured-pulmonary-fibrosis
#19
S X Jin, Q Y Wu, W W Yan, C H Ni
Objective: To explore the potential therapeutic role of miR-489 in silica-induced pulmonary fibrosis mouse models. Methods: A total of 32 C57BL/6 male mice were randomly divided into four groups: saline, silica, silica plus miRNA control and silica plus miR-489 agomir (n=8 in each group) . The mice were instilled with silica particles suspended in saline or sterile saline intratracheally. Subsequently, miR-489 agomir or miRNA control was injected via the tail vein into each mouse at days 28, 35, 42 and 49, the miR-489 levels, histological examination, collagen deposition, fibrotic biomarkers (E-cadherin, α-SMA, Vimentin, Fibronectin) and transforming growth factor-β(1) (TGF-β(1)) protein levels in mouse lung tissues were measured...
May 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28771442/oncomir-17-5p-alarm-signal-in-cancer
#20
REVIEW
Madhusudhan Reddy Bobbili, Robert M Mader, Johannes Grillari, Hanna Dellago
Soon after microRNAs entered the stage as novel regulators of gene expression, they were found to regulate -and to be regulated by- the development, progression and aggressiveness of virtually all human types of cancer. Therefore, miRNAs in general harbor a huge potential as diagnostic and prognostic markers as well as potential therapeutic targets in cancer.The miR-17-92 cluster was found to be overexpressed in many human cancers and to promote unrestrained cell growth, and has therefore been termed onco-miR-1...
July 18, 2017: Oncotarget
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